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Utilization of HerschalBulkley fluid in an inclined compliant channel Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200701
M. Javed; T. Iqbal; A.I. Rao; M. HatamiThis research addresses the impact of peristaltic flow of the HerschelBulkley fluid in twodimensional flexible compliant channel. The effects of heat and mass transfer are deliberated by taking a nonuniform channel. Moreover the inclined nature of the channel has been taken into account. Using low Reynold's number and long wavelength assumptions, the governing system of nonlinear differential equations

Improving the thermal conductivity of water by adding mono & hybrid nanoadditives containing graphene and silica: A comparative experimental study Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200701
Iman Kazemi; Mohammad Sefid; Masoud Afrand 
Combined effects of double rotating cones and magnetic field on the mixed convection of nanofluid in a porous 3D Ubend Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200701
Fatih Selimefendigil; Hakan F. ÖztopImpacts of double rotating cone system and magnetic field on mixed convection in a 3D Ushaped porous channel are analyzed with finite element method. Impacts of different influencing parameters such as Richardson number (between 0.05 and 50), Hartmann number (between 0 and 100), rotational speed of the cones (between −5000 and 5000), size of the cones (between 0 and 0.075H) and aspect ratio (between

Soluble gas absorption and dispersion inside sidebyside water microcylinders containing solid core Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200701
Zhentao Wang; Kai Dong; Qisi Wang; Bin Li; Junfeng Wang; Jiyuan TuThe gaseous sulfur dioxide intrusion into and dispersion inside the binary heterogeneous water microcylinders with sidebyside configuration are presented. The vortexes outside/inside microcylinders as well as the solute transport problem are numerically studied at varied Reynolds number (30 ≤ Re ≤ 160) and solid fraction (0.2 ≤ S ≤ 0.8) at a fixed gapratio (G/R = 1.0) in the gaseous air stream

Diverging/converging small channel for condensation heat transfer enhancement under different gravity conditions Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200701
Chao Bai; Yan Qiu; Xueli Leng; Guanmin Zhang; Maocheng TianDivergingshaped small channel is considered analytically aiming to further enhance condensation heat transfer inside channels. To fulfill heat dissipation requirements under varyinggravity conditions, effectiveness of the diverging small channel is also verified under different gravities. The refrigerant mass flow rate, total heat transfer area and thermal boundary conditions are fixed to investigate

Calculation of the thermodynamic properties of R448A and R449A in a saturation temperature range of 233.15 K to 343.15 K using molecular dynamics simulations Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200701
Md. Sarwar Alam; Ji Hwan JeongR448A, which is a quinary mixture and has a global warming potential (GWP) of 1390, and R449A, which is a quaternary mixture and has a GWP of 1282, have been recommended for commercial refrigeration systems to replace R404A, which has a GWP of 3943 as per EU Regulation No. 517/2014. The thermodynamic properties of R448A and R449A, such as vapor pressure, saturated density, and vaporliquid coexistence

Analysis of rheological properties of MWCNT/SiO2 hydraulic oil nanolubricants using regression and artificial neural network Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200701
Abhisek Haldar; Sankhadeep Chatterjee; Ankit Kotia; Niranjan Kumar; Subrata Kumar GhoshIn this article, the rheological behavior of MWCNT/SiO2 based nanohydraulic oil nanolubricant is evaluated using experimental and Artificial Neural Network (ANN) approach. Viscosities of the hybrid nanolubricant samples were measured at temperature and shear rate range of 10–80 °C and 10–200 s−1 respectively. A new regression model is being proposed to predict the dynamic viscosity of nanolubricants

Porescale investigation on the thermochemical process in uniform and gradient porous media considering immiscible phase Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200701
Zhiguo Xu; Xiao Zhou; Xiang Zhang; Jie Qin; Changying ZhaoIn the present study, the complex thermochemical process in uniform and gradient porous media is investigated by the thermochemical dissolution model based on the lattice Boltzmann method considering immiscible phase. The two immiscible phase flow, solute transport and heat transfer are solved by ShanChen multicomponent lattice Boltzmann model, mass transport lattice Boltzmann model and multicomponent

Thermal and hydrodynamic behavior of suspensions comprising nanoencapsulated phase change materials in a porous enclosure Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200630
Ali Tahmasebi; Hossein Zargartalebi; S.A.M. Mehryan; Mohammad GhalambazNanoencapsulated phase change materials (NEPCMs) are known to enhance the thermal characteristics of fluids; therefore, there is a rising interest in employing these materials in future thermal control systems. This paper investigates hydrodynamic and thermal characteristics of nanofluids, NEPCMs mixed in the host liquid, in glass balls as a porous structure. The geometry is a twodimensional porous

Transient air natural convection in asymmetrically heated vertical channels Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200630
Assunta Andreozzi; Bernardo Buonomo; Furio Cascetta; Oronzio MancaA numerical analysis of natural convection in air in a vertical channel asymmetrically heated at uniform heat flux is carried out in this work. One channel wall is heated whereas the other one is adiabatic, and the problem is transient, twodimensional and laminar. Constant and variable property models are considered. For both models, numerical solution is obtained by means the commercial CFD code

Analysis of natural convection in a square cavity in the presence of a rotating cylinder with a specific number of roughness components Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200630
Rahim Hassanzadeh; Reza Rahimi; Aysan Khosravipour; Sajad Mostafavi; Hakan PekelThis work investigates the effects of a rotating rough cylinder within a square cavity on the natural convective heat transfer process. Six different cases consist of case 1 (cavity without a cylinder), case 2 (cavity with a rotating smooth cylinder), case 3 (cavity with a rotating rough cylinder having one roughness component), case 4 (cavity with a rotating rough cylinder having two roughness components)

Heat transfer of nano powder inside a porous tank with use of nonequilibrium approach Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200630
Yuanzhou Zheng; M. Sheikholeslami; M.M. Bhatti; Ahmad Shafee; Houman BabazadehIn current numerical investigation, irreversibility and energy transportation related to free convection though a porous wavy chamber was scrutinized. One of the essential factors in design of unit is irreversibility which should be minimized. The inner wavy surface acts as heat element and chamber is filled with hybrid nanomaterial. New correlations, contours and profiles are main kinds of outputs

On the entropy generation for a porous enclosure subject to a magnetic field: Different orientations of cardioid geometry Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200630
Seyyed Masoud SeyyediNatural or free convection is one mode of convection heat transfer where temperature changes leads to density variation. For example, free convection can happen in an enclosure that has two walls with different temperatures. In the present study, the heat transfer behavior of a cardioid shaped porous cavity is investigated. Regarding the situation of the inner cardioid, four modes can be considered

Analysis of vortex flow in fluid domain with variable crosssection and design of a new vortex generator Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200630
Jiadong Ji; Runmiao Gao; Weiqiang Chen; Baoyin Liu; Qinghua ChenIn order to design a new vortex generator (VG) and effectively induce and properly control the vibrations of elastic coil pipes (ECPs) in heat exchanger (HE), the effects of the fluid flow parameters, vortex element size and external flow field on vortex flows in a fluid domain with variable crosssection were analyzed. The vibration and heat transfer characteristics of the ECPs were studied based

Numerical investigation of rarefied gaseous flows in an oblique wavy sided walls square cavity Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200630
Wael AlKouz; Khalid B. Saleem; Ali ChamkhaThis paper intends to analyze computationally the rarefied gaseous flow and performance of heat transfer for a steadystate laminar 2D free convection within tilted enclosures where the sided walls are of wavy shape. Lowpressure or rarefied flows are flows with Knudsen number greater than zero. These kinds of flows are of incredible significance in different applications. Boussinesq estimation is

On a multiphaselag model of coupled thermoelasticity Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200630
A.M. Zenkour; H.F. ElMekawyVarious qualitative properties of the dual/threephaselag heat equations are discussed. A refined model of coupled thermoelasticity is formulated to consider three delay times: a phaselag of heat flux, a phaselag of temperature gradient, and a phaselag of thermal displacement gradient. Three special cases are considered to deal with all the considered models in the literature. In the first case

Experimental investigations on heat transfer to H2O/CO2 mixtures in supercritical region Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200629
Hanlin Zhang; Haomin Wu; Dong Liu; Sha Li; Qiang LiSupercritical H2O/CO2 mixtures are the working fluids in a novel power generation system with coal gasified in supercritical water, but their heat transfer behaviors have received less attention compared with those of the supercritical water. Here, we experimentally investigated the heat transfer to these important mixtures. First, a stable and accurate apparatus was designed and established to measure

Comparative study on heat transfer in CNTswater nanofluid over a curved surface Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200629
M. Riaz Khan; Kejia Pan; Arif Ullah Khan; Naeem UllahAnalysis are made to find the heat transfer characteristics and skin friction for twodimensional oblique stagnation point flow of SWCNTs and MWCNTs based nanofluid flowing over a curved surface. Similarity transformations convert the governing flow field equations into a pair of nonlinear ordinary differential equations, and then they are numerically solved through bvp4c function in MATLAB. The inspection

Analysis of heat transfer of spilling fire spread over steady flow of nbutanol fuel Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200628
Yang Pan; Manhou Li; Xinjiao Luo; Changjian Wang; Qiuting Luo; Jingchuan LiThe continuously spilling nbutanol fire is systematically investigated in steady flow state. The influence of thermal conductivity of substrate on spilling fire is revealed. According to the temperature distribution and spreading characteristics, the spilling fire over concurrent steady flow nbutanol is separated into the heat transfer dominant stage in lowdischarge rate and the forced flow dominant

On the effect of structural forces on a condensing film profile near a fingroove corner Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200628
Osman Akdag; Yigit Akkus; Zafer DursunkayaEstimation of condenser performance of twophase passive heat spreaders with grooved wick structures is crucial in the prediction of the overall performance of the heat spreader. Whilst the evaporation problem in microgrooves has been widely studied, studies focusing on the condensation on fingroove systems have been scarce. Condensation on fingroove systems is actually a multiscale problem. Thickness

Semianalytical solution of unsteady heat conduction in plain walls with equal surface temperatures: The Transversal Method Of Lines (TMOL) delimited to the “small time” subdomain Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200628
Antonio Campo; Yunesky Masip Macia; Jaime SieresThe present paper addresses unidirectional, unsteady, heat conduction in a plane wall with uniform initial temperature and equal temperature prescribed at the surfaces. The thermal diffusivity of the solid is assumed to be nearly invariant with temperature. A hybrid analytical /numerical procedure named the Transversal Method Of Lines (TMOL) transforms the onedimensional, unsteady heat conduction

Transient formulation for evaluating convective coefficients in regenerative exchangers with hygroscopic channels Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200628
S.M.D. Santos; L.A. SphaierA transient twodimensional model for coupled heat and mass transfer in channels with hygroscopic walls has been developed. The formulation employs a generalized form that is valid for both circular tubes and parallelplates channels with walls composed of a desiccant material that can physically adsorb humidity from a moist airstream. The model equations are normalized in terms of physically relevant

Forced convective Maxwell fluid flow through rotating disk under the thermophoretic particles motion Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200628
S.A. Shehzad; F. Mabood; A. Rauf; Iskander TliliNumerical analysis is performed for incompressible Maxwell fluid model flow under the implications of thermophoresis and CattaneoChristov theory. Fluid motion is initiated by spinning of the disk. The system that comprises differential equations of partial derivatives is remodel into the system of differential equations by similarity transformations and then solved through RungeKutta4 with shooting

Enhanced thermal properties of polyamide 6, 6 composite/aluminum hybrid via injection joining strategy Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200628
Xiping Li; Xin Ye; Ningning Gong; Wenjie Yang; Mengjia Li; Xiaoming Wang; Can YangPolymer metal hybrid with high thermal conduction and lightweight are of great importance for reducing material and energy consumptions. Firstly, the synergistic improvement in the thermal and mechanical properties of polyamide 6, 6 (PA 66) were investigated. By adding hexagonal boron nitride (hBN) and short carbon fiber (SCF) to PA 66, the thermal conductivity coefficient of the composite was significantly

Experimental investigation into heat transfer performance of waterbased magnetic hybrid nanofluids in a rectangular cavity exposed to magnetic excitation Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200628
S.O. Giwa; M. Sharifpur; J.P. MeyerThis paper addressed the scarcity of experimental studies on the duo effect of magnetic excitation and hybrid nanofluid on the thermoconvection characteristics in enclosures. Novel Fe2O3MWCNT (80:20)/deionized water (DIW) nanofluids with volume concentrations (φ) of 0.05–0.4 vol% were employed in a rectangular cavity exposed to magnetic excitation (4.89–21.95 mT) to examine the thermoconvection

Heat transfer and irreversibility analysis of magnetic nanomaterial within corrugated enclosure Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200628
Xiaowei Xu; Cong Qi; Ahmad Shafee; Bui Xuan VuongFree convention of nano liquid with considering hybrid nanoparticles through a chamber with wavy inner surface is scrutinized and nonDarcy technique is applied for permeable region modeling. Not only thermal analysis but also components of irreversibility are presented in outcomes which are obtained via CVFEM. Employing homogeneous model of nanomaterial let us to use benefits of previous formulation

Flow and heat transfer of generalized Maxwell fluid over a moving plate with distributed order time fractional constitutive models Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200625
Lin Liu; Libo Feng; Qian Xu; Liancun Zheng; Fawang LiuThe incompressible, steady and laminar fluid boundary flow and heat transfer through a moving plate subject to a kind of novel constitution relationships containing the relaxation time parameters and distributed order time fractional operators are originally introduced. Formulated distributed order time fractional equations governing the flow and heat consider the relaxation characteristic and a spectrum

Machine learning for heat transfer correlations Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200625
Beomjin Kwon; Faizan Ejaz; Leslie K. HwangThis paper explores machine learning approach as a heat transfer correlation. Machine learning significantly reduces the effort to develop multivariable heat transfer correlations, and is capable of readily expanding the parameter domain. Random forests algorithm is used to predict the convection heat transfer coefficients for a highorder nonlinear heat transfer problem, i.e., convection in a cooling

Capillary performance characterization of porous sintered stainless steel powder wicks for stainless steel heat pipes Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200625
Shiwei Zhang; Can Chen; Gong Chen; Yalong Sun; Yong Tang; Zhiwei WangStainless steel heat pipes have attracted increasing attentions for applications in extreme environments. The stainless steel wick structure as the key component is of high importance for the thermal performance of stainless steel heat pipe. Here, sintered porous wicks using stainless steel powders are developed to evaluate the capillary performance that directly governs the liquid circulation in heat

Comparative study of multiple linear regression (MLR) and artificial neural network (ANN) techniques to model a solid desiccant wheel Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200625
Kamil Neyfel Çerçi; Ertaç HürdoğanIn recent years, the use of solid desiccant wheels has become attractive not only for airconditioning applications, but also for food drying processes and storage due to their capacity to use waste heat in order to meet dry and hot air demand. It is very important that solid desiccant wheels be modelled for different purposes in such a way that the equipment can be well analysed in various systems

An integrated model of the thermoregulatory and respiratory systems of the human body Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200624
C. Albuquerque; J.I. YanagiharaThis work aims to develop a mathematical model for computing the distribution of temperature, O2, and CO2 in the human body, depending on the ambient conditions. The body is divided into segments, including layers of tissues and blood compartments, where mass and energy balances are applied. The inclusion of O2 and CO2 transfer mechanisms throughout all segments and tissues of the human body is one

Molecular dynamics simulation of annular condensation of vapor argon through a nanochannel for different saturation conditions with focusing on the flow and heat transfer Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200624
Shabnam Ghahremanian; Abbas Abbassi; Zohreh Mansoori; Davood ToghraeiIn this paper, the annular condensation of vapor Argon through a nanochannel is studied using the molecular dynamics method. Simulation is performed in a computational domain with two solid platinum walls for different saturation conditions with focusing on the flow characteristics and heat transfer. The density, surface tension, and velocity profiles are obtained for various axial locations. Also

Flow and heat transfer measurements in the laminar wake region of semicircular cylinder embedded within a rectangular channel Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200623
Apoorv Vyas; Aishwarya Yadav; Atul SrivastavaFlow and heat transfer in the wake region of a semicircular cylinder embedded within a rectangular channel have been studied experimentally using nonintrusive techniques. The semicircular cylinder embedded within the channel with a blockage ratio of 0.45 (d/H) acts as an obstacle to the incoming fully developed laminar flow and creates a wake region in its downstream side. The velocity field in

Numerical investigation of heat transfer enhancement of an inclined heated offset jet Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200620
Meriem Ajmi; Nidhal Hnaien; Saloua Marzouk; Lioua Kolsi; Kaouther Ghachem; Habib Ben Aissia; Mohammed A. AlmeshaalOffset jet is a commonly used flow in different industrial applications, such as in cooling electronic devices or heat exchange systems. Determining the exact behaviour of the thermal characteristics of such flow, as a function of several independent parameters, is quite interesting and useful. The aim of the current study of an inclined heated and turbulent offset jet is to investigate numerically

Caputo fractional convective flow in an inclined wavy vented cavity filled with a porous medium using Al2O3  Cu hybrid nanofluids Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200622
Sameh E. AhmedThe fractional partial differential equations governing a mixed convective flow within an inclined wavy enclosure filled by a porous medium using hybrid nanofluids are presented. The forced flow is due to an inlet part in the bottom wavy wall as well as a vent is located at the top wavy surface. The Caputo definition is used to evaluate the time fractional derivatives and the Darcy model is applied

Enhanced electrical performance for heterojunction with intrinsic thinlayer solar cells based photovoltaic thermal system with aluminum collector Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200621
Wei Pang; Yanan Cui; Qian Zhang; Hui YanCrystalline silicon heterojunction with intrinsic thinlayer photovoltaic (HITPV) module produces more output power, compared with the cSi photovoltaic module. However, it presents a risk of overheating in hot weather. In this paper, we used a new cooling design of the heterojunction with intrinsic thinlayer photovoltaic thermal (HITPVT) module to lower the temperature using laminated encapsulation

Effectiveness of Hall current and thermophysical properties in compressible flow of viscous fluid thorough spinning oscillatory disk Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200618
S.A. Shehzad; Z. Abbas; A. Rauf; T. MushtaqThis study investigates the features of Hall current and thermophysical properties (viscosity, density and thermal conductivity) on unsteady, compressible, laminar flow of viscous fluid. Swirl flow is perceived by oscillatory movement of revolving disk. The well suited variables are adapted in order to achieve the nonsimilar system of expressions. The nonsimilar solutions are worked out numerically

An analytical solution for heat conduction of FGM cylinders with varying thickness subjected to nonuniform heat flux using a firstorder temperature theory and perturbation technique Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200618
M. Parhizkar Yaghoobi; M. GhannadIn this research, thermal analysis in cylinders with varying thickness constructed from functionally graded materials (FGMs) which are under nonuniform heat fluxes in their inner and outer layers is presented. The heterogeneous distribution of properties is a modelled power function along the thickness and the length of the cylinder. Using firstorder temperature theory (FTT) and the energy method

Lorentz force impact on hybrid nanofluid within a porous tank including entropy generation Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200617
M. Sheikholeslami; Zahir Shah; Ahmad Shafee; Poom Kumam; Houman BabazadehComputational analysis was performed to scrutinize the MHD hybrid nanofluid free convection with combination of entropy generation within a permeable tank. Flow pattern was reported for wide range of scrutinized parameters. Outputs reveal that convective flow intensity augments with rise of permeability and stronger thermal plume generates. Isotherms reveal that growth of Lorentz force leads to less

A comprehensive study of heat transfer characteristic and twodimensional FIV for heated squaresection cylinder with different damping ratios Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200615
Amir Hossein Rabiee; S.D. FarahaniThe present study explores the effect of damping ratio and Reynolds number on the flowinduced vibration and heat transfer behavior of a heated squaresection cylinder. To this end, fluidstructure interaction simulations based on the finitevolume method are conducted for five different damping ratios of ζ = 0, 0.01, 0.05, 0.1, 0.25 and 0.5 at four representative Reynolds numbers of Re = 80, 90, 220

Heat transfer augmentation in a diamond shaped enclosure utilizing CNTwater Nanofluid Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200612
A.K. Azad; Md Moinuddin Shuvo; Rabiul Hasan Kabir; Khan Md. Rabbi; M.F. Karim; M.M. RahmanA numerical analysis has been investigated for unsteady natural convection heat transfer problem in diamond shaped cavity. Carbon nanotube (CNT)water nanofluid is used to analyze the heat transfer and compared with the pure water as working fluid. The lower right wall is kept at heated surface with constant heat flux and upper left wall is kept cold. Both the bottom left and upper right wall are kept

Thermal behaviors and fluid flow controlling the geometry of 7075 aluminum alloy single tracks during liquid metal flow rapid cooling additive manufacturing Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200612
Ang Li; Xuefeng Liu; Xiangrui Wan; Yaohua YangGeometry of single tracks has a significant influence on the forming efficiency, surface accuracy and internal quality of metal additive manufacturing parts. Herein, a 3D numerical model of 7075 aluminum alloy single tracks forming process during liquid metal flow rapid cooling additive manufacturing was established to reveal the effect of thermal behaviors and fluid flow on the geometry of 7075 aluminum

Influence of the Lorentz force on the ventilation cavity having a centrally placed heated baffle filled with the Cu − Al2O3 − H2O hybrid nanofluid Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200611
Rui Du; P. Gokulavani; M. Muthtamilselvan; Fahad AlAmri; Bahaaeldin AbdallaThe objective of this paper is to examine the natural convection of the ventilation cavity filled with the Cu − Al2O3 − H2O hybrid nanofluid influenced by the effects of the magnetic field. The vertical heated baffle is fixed at the center of the ventilation cavity. The cavity walls are insulted. The opening ports are positioned diagonally at the vertical walls. The finite difference method is employed

Effectiveness of temperaturedependent properties of Au, Ag, Fe3O4, Cu nanoparticles in peristalsis of nanofluids Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200611
F.M. Abbasi; Maimoona Gul; S.A. ShehzadIt is well established that change in temperature perturbs fluid properties, therefore present study analyzes MHD peristalsis of nanofluids with temperature dependent viscosity and thermal conductivity. Four different nanoparticles i.e. Gold (Au), Silver (Ag), Iron oxide (Fe3O4) and Copper (Cu) are used in the analysis. Joule heating with mixed convection is also taken into consideration. Modifications

Modeling heat transfer in fluid flow near a decelerating rotating disk with variable fluid properties Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200611
Talat Rafiq; M. Mustafa; M. Asif FarooqPresent work formulates the unsteadily revolving fluid flow caused by a rotating porous disk in a variable viscosity fluid. Following an existing paper, the disk angular velocity is assumed to exhibit an inversely linear time dependency. Moreover, temperature dependency in fluid viscosity is incorporated in the analysis. Two different numerical approaches namely, a modified finite difference scheme

Thermomagnetic convection in a circular annulus filled with magnetocaloric nanofluid Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
Shubham Dalvi; E.C.J. Karaliolios; Theo H. van der Meer; M. ShahiThe present work is an effort to find a feasible design proposal which can ensure the continuous flow and selfsustained heat transfer within a circular annulus, solely because of magnetic forces. The objective is to study the change in flow characteristics because of magnetocaloric response of the nanoparticles used. In the present work, Mean Field Theory is used to calculate the specific magnetization

Modelling of soil solid thermal conductivity Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
Hailong He; Min Li; Miles Dyck; Bingcheng Si; Jinxin Wang; Jialong LvSoil solid thermal conductivity (λs) is critical to model effective soil thermal conductivity (λeff) that is required for engineering design and estimate of soil surface energy flux and soil temperature. However, it is impossible to measure λs because soil is a porous medium and there is no way to compact the soil to a continuous solid state without any pore spaces. The indirect estimation of λs requires

Partial slip in DarcyForchheimer carbon nanotubes flow by rotating disk Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
M. Adil Sadiq; Farwa Haider; Tasawar Hayat; Ahmed AlsaediThis article intends to illustrate the velocity and thermal slip effects in DarcyForchheimer flow by a rotating disk. Viscous dissipation is considered. Carbon nanotubes of two types (recognized as SWCNTs and MWCNTs) are utilized. Suitable variables are introduced for conversion of partial differential expressions into a system of ordinary differential equations. Computation of nonlinear system is

Natural convection and entropy generation of a nanofluid around a circular baffle inside an inclined square cavity under thermal radiation and magnetic field effects Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
Zhixiong Li; Ahmed Kadhim Hussein; Obai Younis; Masoud Afrand; Shizhe FengA numerical investigation of the free convection of the Al2O3/water nanofluid was carried out in a square cavity. The cavity was tilted and exposed to a constant horizontal magnetic field. Radiation also occurred in the cavity, and entropy generation was also investigated. The lefthand and righthand walls of the cavity were kept at a fixed temperature (Tc), while the upper and lower walls were insulated

Effect of copper nanoparticles on thermal behavior of water flow in a zigzag nanochannel using molecular dynamics simulation Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
Yu Jiang; Sadegh Dehghan; Arash Karimipour; Davood Toghraie; Zhixiong Li; Iskander TliliMolecular dynamics (MD) simulation is one of the most common simulation methods which predict the dynamical and thermodynamical properties of atomic structures based on classical Newton's laws. In this study, the effect of copper nanoparticles on the thermal behavior of the fluid in zigzag nanochannel was investigated using molecular dynamics simulation. In our simulations, water molecules were used

Molecular dynamics simulation of ferronanofluid flow in a microchannel in the presence of external electric field: Effects of Fe3O4 nanoparticles Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
Reza Balali Dehkordi; Davood Toghraie; Mohammad Hashemian; Farshid Aghadavoudi; Mohammad AkbariIn this study, the effect of nanoparticle variation on water/Fe3O4 nanofluid manner in the presence of an external electric field reported. The results of the physical properties of these structures were estimated by LAMMPS software. The results of these simulations are used in the design of electronic equipment in which nanofluids are used as refrigerants in their structures. Physically, for studying

Numerical investigation of nucleate pool boiling outside a vertical tube under subatmospheric pressures Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
Shuai Ren; Wenzhong ZhouIn this paper, nucleate pool boiling outside a vertical tube under subatmospheric pressure conditions has been numerically studied. The volumeoffluid interface tracking technique is implemented on the basis of a two dimensional axissymmetric EulerianEulerian multiphase framework. The phase change model is applied into a computational fluid dynamics platform by userdefined functions. The numerical

An experimental investigation on the thermophysical properties of 40% ethylene glycol based TiO2Al2O3 hybrid nanofluids Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
WajihaTasnim Urmi; M.M. Rahman; W.A.W. HamzahThis paper presents an experimental study on the thermophysical properties of 40% ethylene glycolbased TiO2Al2O3 hybrid nanofluids. The hybrid nanofluids were prepared for concentrations of 0.02 to 0.1% and temperature of 30 to 80 °C. Nanofluid stability is studied using visual observation, spectral UV–Vis, zeta potential, and results obtained excellent stability. The rheological test was conducted

Numerical studies of gasliquid Taylor flows in vertical capillaries using CuO/water nanofluids Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
Jingzhi Zhang; Shizhen Li; Xinyu Wang; Bengt Sundén; Zan WuHeat transfer and pressure drop characteristics of gasliquid Taylor flows in a mini tube with 1 mm inner tube diameter were investigated numerically using a moving frame of reference method. A CuO/water nanofluid was used as the continuous phase, while nitrogen was adopted as the dispersed phase. The inlet Reynolds number ranged from 250 to 600, and the volume concentration of the CuO particles was

Application of M5 tree regression, MARS, and artificial neural network methods to predict the Nusselt number and output temperature of CuO based nanofluid flows in a car radiator Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
Mostafa Kahani; Mahyar Ghazvini; Behnam MohseniGharyehsafa; Mohammad Hossein Ahmadi; Amin Pourfarhang; Motahareh Shokrgozar; Saeed Zeinali HerisIn the current study, CuO nanoparticles were dispersed in a mixture of Ethylene GlycolWater (60/40 wt. %) to prepare stable nanofluid in different concentrations (0.05 − 0.8 vol. %). The samples were used as the coolant fluid in a specific car radiator to evaluate the thermal performance of nanofluid and base fluid in the system. Five different and novel Machinelearning methods were applied over

Exploring the features of stratification phenomena for 3D flow of Cross nanofluid considering activation energy Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
Mehboob Ali; Muhammad Shahzad; Faisal Sultan; Waqar Azeem Khan; Sheikh RashidTo explore the features of threedimensional incompressible flow of Cross fluid with combine convective and stratifcation phenomena. Futhermore, Brownian and thermophoresis effect of nanoparticles is considered for investigation of magnetic field, thermal radiation, heat sink/source and activation energy. The governing set of nonlinear partial differential equations (PDE's) is converted to the set

A note on the compositiondependency of the density within the mass transfer layer Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200609
Mohammad Ali Aroon; Milad Asgarpour KhansaryIn the conventional mass transfer analysis in binary mixtures, a constant total mass concentration (or density) in the mass transfer layer has been assumed. This assumption is valid only once the concentration of diffusing component in the mixture is very low. Here, an explicit compositiondependency is introduced for the density within the mass transfer layer in order to see what happens when the

The effect of evaporation on the oscillation frequency of an inviscid liquid drop Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200602
S. Tonini; G. Varma RajaKochanattu; G.E. CossaliThe effect of evaporation on the oscillation angular frequency of an inviscid drop is analytically investigated. The evaporation is found to increase the oscillation frequency, and this is driven by two nondimensional parameters, one accounting for the fluid properties and the other for the evaporation conditions. An investigation of the conditions for which the effect can be detected is reported

Flow dynamics of dualstage counterswirl combustor in different confinement spaces Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200601
Qinghua Zeng; Yixiang YuanVerify the numerical model and physical mesh on the basis of the experiment, and then analyze the flow dynamics of the combustion chamber of the dualstage counterrotating swirler based on the verified numerical method. It is found that the flow dynamics of the combustion chamber of the dualstage counterrotating swirler is different from that of the singlestage swirler, which is affected by the

Synergy between the solution based on the Transversal Method Of Lines and the Leveque solution in the platform of the Graetz/Nusselt problem Int. Commun. Heat Mass Transf. (IF 3.971) Pub Date : 20200530
Antonio Campo; Müslüm Arıcı; Yunesky Masip MacíaThe aim of the present study is to generate an approximate, semi–analytical solution of the Graetz/Nusselt problem for the demanding upstream subregion of the tube employing the Transversal Method Of Lines (TMOL). In the heat convection literature, the approximate, semi–analytical solution of the Graetz/Nusselt problem in the upstream subregion of the tube that is available refers to the traditional