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Detailed Chemical Kinetics Simulation of Hydrogen Hydrothermal Combustion Characteristics: Special Effects of Supercritical H2O/CO2 Mixtures J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-25 Yunqiu Xia, Youjun Lu
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Fabrication of lightweight flexible thermoplastic polyurethane/multiwalled carbon nanotubes composite foams for adjustable frequency-selective electromagnetic interference shielding by supercritical carbon dioxide J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-23 Xiaohan Wang, Gui Wang, Guangjian He, Xia Liao, Pengwei Song, Fangfang Zou, Suilin Liu, Yong Luo, Guangxian Li
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The Effect of Equipment Design and Process Scale-up on Supercritical CO2 Extraction: Case Study for Silybum marianum seeds J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-23 Stoja Milovanovic, Ivana Lukic, Marko Stamenic, Piotr Kamiński, Grzegorz Florkowski, Katarzyna Tyśkiewicz, Marcin Konkol
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Experimental study of ketoconazole impregnation into polyvinyl pyrrolidone and hydroxyl propyl methyl cellulose using supercritical carbon dioxide: Process optimization J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-22 Mostafa Fathi, Gholamhossein Sodeifian, Seyed Ali Sajadian
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Graphene-based materials prepared by supercritical fluid technology and its application in energy storage J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-21 Zhiyuan Liu, Rahul Navik, Hunjun Tan, Qixuan Xiang, Wahyudiono, Motonobu Goto, Rodolfo Morales Ibarra, Yaping Zhao
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Large-eddy simulation and mathematical model of vortex breakdown and pressure drop in a cavity with tubeless vortex reducer Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-06-23 Wenjie Shen, Suofang Wang, Xindan Zhang, Xiaodi Liang
The tubeless vortex reducer was used to reduce the pressure drop in a cavity with radial inflow. In previous studies, the mechanism of vortex breakdown in tubeless vortex reducers was not clear, and there was a lack of direct guidance for engineering design. In this paper, we studied the vortex and pressure in the cavity in detail by large-eddy simulation (LES) and experiments. A mathematical model
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Unsteady inclined stagnation point flow and thermal transmission of Maxwell fluid on a stretched/contracted plate with modified pressure field Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-06-24 Yu Bai, Qiaoli Tang, Yan Zhang
Purpose The purpose of this study is to investigate the two-dimensional unsteady inclined stagnation point flow and thermal transmission of Maxwell fluid on oscillating stretched/contracted plates. First, based on the momentum equation at infinity, pressure field is modified by solving first-order differential equation. Meanwhile, thermal relaxation characteristic of fluid is described by Cattaneo–Christov
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Continuous supercritical CO2 assisted process for the production of nano-niosomes loaded with a second-generation antibiotic for ocular therapy J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-22 Lucia Baldino, Ernesto Reverchon
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Large eddy simulation on the vortex evolution in a squirrel-cage fan based on a slice computational model Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-06-20 Boyan Jiang, Yougen Huang, Xiaopei Yang, Qianhao Xiao, Weigang Yang, Jun Wang
To investigate the hard-to-measure complex flow in a squirrel-cage fan, a slice model was established in the present study to perform a partial large eddy simulation calculations on an r-θ sectional flow field instead of the large-scale and time-consuming full three-dimensional flow calculations. The method used to build the slice model was first introduced, and then the model was verified by the results
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Supercritical CO2-assisted impregnation of cellulose microparticles with R-carvone: Effect of process variables on impregnation yield J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-20 Noelia D. Machado, José E. Mosquera, Raquel E. Martini, María L. Goñi, Nicolás A. Gañán
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Production of quercetin-nicotinamide cocrystals by gas antisolvent (GAS) process J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-20 Jônatas L. Dias, Evertan A. Rebelatto, Dachamir Hotza, Adailton J. Bortoluzzi, Marcelo Lanza, Sandra R.S. Ferreira
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Acetaminophen synthesis and encapsulation using safe mixed-solvents and solution enhanced dispersion by supercritical CO2 J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-18 Tariqul Islam, Md. Zaidul Islam Sarker, ABM Helal Uddin, Richard Lee Smith
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Structure-gradient thermoplastic polyurethane foams with enhanced resilience derived by microcellular foaming J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-13 Guilong Wang, Junxia Liu, Jinchuan Zhao, Shuai Li, Guoqun Zhao, Chul B. Park
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Extraction of monoterpenes from coriander (Coriandrum sativum L.) seeds using subcritical water extraction (SWE) technique J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-15 Eun-Ji Song, Min-Jung Ko
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Analysis of forced convective nanofluid flow through a wavy channel with linearly varying amplitude at the entrance Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-06-20 Ajit Kumar, Sumit Kumar Mehta, Sukumar Pati, László Baranyi
Purpose The purpose of this paper is to analyze the heat and momentum transfer for steady two-dimensional incompressible nanofluid flow through a wavy channel with linearly varying amplitude in the entrance region. Design/methodology/approach The mass, momentum and energy conservation equations for laminar flow of Cu-water nanofluids are computationally solved using the finite element method. A parametric
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Real-time estimation of the heat transfer coefficient of pitot tubes undergoing freezing Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-06-16 Steve B. Diniz, César C. Pacheco
Purpose The purpose of this paper is to identify freezing in pitot tubes at real-time, by means of the estimated heat transfer coefficient (HTC) at the tip of the probe. The prompt identification of such freezing is paramount to activate and control mechanisms for ice removal, which in turn are essential for the safety of the aircraft and its passengers. Design/methodology/approach The proposed problem
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Heat transmission in Darcy-Forchheimer flow of Sutterby nanofluid containing gyrotactic microorganisms Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-06-16 Ambreen A. Khan, Alina Arshad, R. Ellahi, Sadiq M. Sait
Purpose This paper aims to deal with the heat transmission of Sutterby fluid-containing gyrotactic microorganism by incorporating non-Darcy resistance law. The mathematical modeling is based on nanoparticle concentration, energy, momentum and motile microorganism equations. Design/methodology/approach The governing nonlinear coupled equations are first rendered into nonlinear ordinary equations using
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Lattice Boltzmann study of fluid flow and heat transfer characteristics of a heated porous elliptic cylinder: a two-domain scheme Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-06-16 Mohammad Sedigh Kohanpour, Gholamreza Imani
Purpose This study aims to investigate lattice Boltzmann (LB) simulation of the fluid flow and heat transfer characteristics of a heated porous elliptic cylinder in uniform flow based on the two-domain scheme. In the present research, the effect of axis ratio (1 ≤ AR ≤ 2), Reynolds number (5 ≤ Re ≤ 40) and Darcy number (10−4 ≤ Da ≤ 10−2) are studied. Design/methodology/approach To perform the LB simulation
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Analysis of conjugate heat transfer for forced convective flow through wavy minichannel Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-06-15 Abhijit Borah, Sumit Kumar Mehta, Sukumar Pati
Purpose The purpose of this paper is to analyze numerically forced convective conjugate heat transfer characteristics for laminar flow through a wavy minichannel. Design/methodology/approach The mass and momentum conservation equations for the flow of water in the fluidic domain and the coupled energy conservation equations in both the fluid and solid domain are solved numerically using the finite
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Investigation on the effect of container configurations and forecastle fairings on wind resistance and aerodynamic performance of large container ships Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-06-12 Rui Deng, Zhijie Song, Hang Ren, Hao Li, Tiecheng Wu
The wind resistance of a model of a large container ship was investigated experimentally and numerically under various conditions to investigate the aerodynamic performance and identify approaches for reducing wind resistance. The container ship model with and without six types of forecastle fairing was tested in a wind tunnel under conditions of full load and various uneven loads in different wind
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Characteristic analysis and motion control of a novel ball double-screw hydraulic robot joint Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-06-12 Jie Shao, Yongming Bian, Meng Yang, Guangjun Liu
The hydraulic joint is the key driving component of a robot. To reduce the joint size of the hydraulic robot, and improve the control accuracy and dynamic response performance, this paper proposes a novel joint structure and control method of a ball double-screw hydraulic robot. Using ball and circular arc spiral groove transmission, the hydraulic joint has a small transmission friction coefficient
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Sequential process to obtain fatty acid esters from crambe oil using a mixture of acyl acceptors under pressurized conditions J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-11 Caroline Portilho Trentini, Bruna Tais Ferreira de Mello, Najla Postaue, Djéssica Tatiane Raspe, Camila da Silva, Vladimir Ferreira Cabral
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Computational fluid dynamics simulation and experimental investigation of a thermoelectric system for predicting influence of applied voltage and cooling water on cooling performance Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-06-10 Mehmet Akif Ceviz, Faraz Afshari, Burak Muratçobanoğlu, Murat Ceylan, Eyüphan Manay
Purpose The purpose of this paper is to experimentally and numerically investigate the cooling performance of the air-to-water thermoelectric cooling system under different working conditions. Design/methodology/approach An air-to-water thermoelectric cooling system was designed and manufactured according to the principle of discrete binary thermoelectric Peltier modules, and the thermal performance
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Concerning the effect of radial thermal conductivity in a self-similar solution for rotating cone-disk systems Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-06-09 Igor V. Shevchuk
Purpose Thus, the purposes of this study are to study the limits of applicability of the self-similar solution to the problem of fluid flow, heat and mass transfer in conical gaps with small conicity angles, to substantiate the impossibility of using a self-similar formulation of the problem in the case of large conicity angles and to substantiate the absence of the need to take into account the radial
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Highly sensitive large strain cellulose/multiwalled carbon nanotubes (MWCNTs)/thermoplastic polyurethane (TPU) nanocomposite foams: From design to performance evaluation J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-09 Yanpei Fei, Ruitao Jiang, Wei Fang, Tong Liu, Mohammad Reza Saeb, Aleksander Hejna, Morteza Ehsani, Mateusz Barczewski, S. Mohammad Sajadi, Feng Chen, Tairong Kuang
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Cell structure and hardness evolutions of TPU foamed sheets with high hardness via a temperature rising foaming process J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-09 Junjie Jiang, Mengnan Zhou, Yaozong Li, Bichi Chen, Fangwei Tian, Wentao Zhai
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Supercritical fluid extraction as a suitable technology to recover bioactive compounds from flowers J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-09 Lucía López-Hortas, Paula Rodríguez, Beatriz Díaz-Reinoso, Marisa C. Gaspar, Hermínio C. de Sousa, Mara E.M. Braga, Hermínia Domínguez
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The adsorption behavior and phase transfer catalytic fixation of a special dye SCF-AOL2 on cotton in supercritical carbon dioxide J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-08 Yang-Yang Zhu, Chuang-Long Cui, Jia-Qi Xue, Mei-Wu Shi, Zi-Han Xu, Wei Jiang, Rong Wang, Jia-Jie Long
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Two-phase flow, pressure drop, and Joule-Thomson effect in a micro-orifice with trans critical carbon dioxide flow J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-03 Anatoly Parahovnik, Pranzal Ahmed, Yoav Peles
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Preparation of astragaloside IV (AS-IV) nanoparticles via SAS process for anticancer efficacy: Optimization based on Box-Behnken Design J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-06-03 Biao-Qi Chen, Hao Liu, Yi Zhao, Xiao-Chang Lu, Chun-Yang Zhang, Ranjith Kumar Kankala, Shi-Bin Wang, Ai-Zheng Chen
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The dynamic pressure effect of gas microbearings under high rotational speed Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-06-01 C. Zhang, W. Hong, S. Zheng
A gas journal microbearing and the corresponding rotor-bearing system are studied both theoretically and experimentally for their application in the high-speed air compressor of fuel cell vehicles. The gas microbearing is proved to provide reliable support for the rotor, as it shows both static and dynamic pressure effects under the high operating speed of the on-board air compressor. In order to realize
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Numerical investigation on flow and thermal performance of supercritical CO2 in a horizontal ribbed tube J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-05-28 Shang Mao, Tao Zhou, Dong Wei, Wenbin Liu, Chunhui Xue
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Large eddy simulation of water jets under transcritical and supercritical conditions J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-05-28 Yifei Ren, Zhenqun Wu, Xiangjin Meng, Guobiao Ou, Jiajin Kou, Hui Jin, Liejin Guo
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Numerical investigation of two-phase flow through tube bundles based on the lattice Boltzmann method Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-05-28 Pengxin Cheng, Jinsong Zhang, Nan Gui, Xingtuan Yang, Jiyuan Tu, Shengyao Jiang
In pursuit of stable operation in thermal hydraulic engineering, this paper researches two-phase flow through tube bundles by the lattice Boltzmann method. The single-relaxation-time lattice Boltzmann model and the multicomponent, multiphase pseudo-potential lattice Boltzmann model are adopted. Specifically, the two-phase flow past double-tandem circular cylinders, double-parallel circular cylinders
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The aerodynamic effects of blade pitch angle on small horizontal axis wind turbines Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-05-31 Mehmet Numan Kaya, Oguz Uzol, Derek Ingham, Faruk Köse, Riza Buyukzeren
Purpose The purpose of this paper is to thoroughly investigate the aerodynamic effects of blade pitch angle on small scaled horizontal axis wind turbines (HAWTs) using computational fluid dynamics (CFD) method to find out the sophisticated effects on the flow phenomena and power performance. Design/methodology/approach A small HAWT is used as a reference to validate the model and examine the aerodynamic
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Production of biopharmaceutical dried-powders using supercritical CO2 technology J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-05-25 Aaron O’Sullivan, Kevin M. Ryan, Luis Padrela
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Hydrolysed collagen as carrier material for particle formation via supercritical CO2 impregnation J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-05-28 Victor Aredo, Estela Selaro Passalacqua, Alessandra Lopes de Oliveira
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Citrus fruit processing by pressure intensified technologies: A review J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-05-27 Luis I. Granone, Pablo E. Hegel, Selva Pereda
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A comparison of machine learning models for suspended sediment load classification Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-05-24 Nouar AlDahoul, Ali Najah Ahmed, Mohammed Falah Allawi, Mohsen Sherif, Ahmed Sefelnasr, Kwok-wing Chau, Ahmed El-Shafie
The suspended sediment load (SSL) is one of the major hydrological processes affecting the sustainability of river planning and management. Moreover, sediments have a significant impact on dam operation and reservoir capacity. To this end, reliable and applicable models are required to compute and classify the SSL in rivers. The application of machine learning models has become common to solve complex
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Entropy generation minimization of Ag-Fe_3O_4/water-ethylene glycol squeezed hybrid nanofluid flow between parallel disks Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-05-26 Rashmi Agrawal, Pradeep Kaswan
Purpose This paper aims to examine the squeezing flow of hybrid nanofluid within the two parallel disks. The 50:50% water–ethylene glycol mixture is used as a base fluid to prepare Ag–Fe_3O_4 hybrid nanofluid. Entropy generation analysis is examined by using the second law of thermodynamics, and Darcy’s modal involves estimating the behavior of a porous medium. The influences of Viscous dissipation
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Numerical investigation on the thermal-hydraulic performance of supercritical CO2 in a modified airfoil fins heat exchanger J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-05-25 Zengxiao Han, Jiangfeng Guo, Haiyan Liao, Zhongmei Zhang, Xiulan Huai
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Extension of the boundary integral method for different boundary conditions in steady-state Stokes flows Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-05-25 Sandipan Kumar Das
Purpose The boundary integral method (BIM) provides unparalleled computational efficiency for solving problems wherever it is applicable. For Stokes flows, the BIM in its current form can only be applied to a limited class of problems that generally comprises boundaries with either specified velocity or stress. This study aims to radically extend the applicability by developing a general method within
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The impact of strut profile geometry and malapposition on the haemodynamics and drug-transport behaviour of arteries treated with drug-eluting stents Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-05-24 Pujith Rajaguru Senapathy Vijayaratnam, John Arthur Reizes, Tracie Jacqueline Barber
Purpose Stent malapposition is one of the most significant precursors of stent thrombosis and restenosis. Adverse haemodynamics may play a key role in establishing these diseases, although numerical studies have used idealised drug transport models to show that drug transport from malapposed drug-eluting stent struts can be significant. This paper aims to study whether drug transport from malapposed
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Topological and hydrodynamic analyses of solar thermochemical reactors for aerodynamic-aided window protection Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-05-22 Bo Wang, Alireza Rahbari, Morteza Hangi, Xian Li, Chi-Hwa Wang, Wojciech Lipiński
Particles and condensing vapors contribute to the contamination of optical components of solar thermochemical reactors including windows and secondary concentrators and result in severe reactor performance deterioration. We propose an impinging-jet solar reactor in a distinctive topology to enhance aerodynamic-aided window protection. The vector fields on the two-dimensional inner surfaces of the impinging-jet
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Natural convection process endorsed in coaxial duct with Soret/Dufour effect Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-05-23 Syed Saqib Shah, Hakan F. Öztop, Rizwan Ul-Haq, Nidal Abu-Hamdeh
Purpose The purpose of this paper is to analyse the buoyancy flow, mass and heat transfer in coaxial duct under Soret and Dufour effect. The combined effects of the thermal-diffusion and diffusion-thermo coefficients, as well as the Schmidt number, on natural convection in a heated lower coaxial curve were explored using the proposed physical model. The Dufour and Soret effects are taken into consideration
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Swirl flow in annular geometry with varying cross-section Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-05-19 Mohammad Raghib Shakeel, Esmail M. A. Mokheimer
Swirling gas flow is an important topic of research that helps in the design of rockets, atomizers,and gas turbine combustors. In the present work, swirl flow inside annular geometries with constant and varying cross-sectional areas are examined using computational fluid dynamics (CFD). Effects of changing the flow and geometric parameters on the swirl behaviour were studied. Reynolds number was found
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Numerical study on jet noise suppression with water injection during one-nozzle launch vehicle lift-off Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-05-19 Chenglong Xing, Guigao Le, Hanyu Deng
The launch vehicle will experience extreme acoustic environment at lift-off, which will cause the invalidation and destruction of the aerospace equipment, and reducing noise is of great significance for improving launch safety. In this paper, the numerical simulation of gas–liquid two-phase flow and its acoustic field is carried out, and the flow field is simulated by the discrete phase model (DPM)
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PVTx properties of the ternary mixture water +1-propanol+n-hexane in the critical and supercritical regions J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-05-19 I.M. Abdulagatov, A.R. Bazaev, E.A. Bazaev, B.K. Osmanova
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Tessellation-based modeling and flow simulation of pulmonary acinus with alveolar pore Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-05-19 Yongjun Jin, Haihang Cui, Li Chen, Kai Sun, Haiguo Yin, Zhe Liu
Purpose This study aims to perform flow simulations inside the acinus with fine alveolar pores (Kohn pores) using hexagonal cells and bottom-up geometric modeling, which enabled the elimination of invalid voids using previous top-bottom methods and spherical or circular cells. Design/methodology/approach Regular hexagonal cells were used to construct alveoli with no gaps via tessellation. Some hexagonal
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Evaluation of Fay and Riddell formula under hypersonic flight conditions Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-05-19 Sanghoon Lee, Yosheph Yang, Jae Gang Kim
Purpose The Fay and Riddell (F–R) formula is an empirical equation for estimating the stagnation-point heat flux on noncatalytic and fully catalytic surfaces, based on an assumption of equilibrium. Because of its simplicity, the F–R has been used extensively for reentry flight design as well as ground test facility applications. This study aims to investigate the uncertainties of the F-R formula by
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A semi-analytical benchmark for the Stefan problem in arbitrary dimension – assessing accuracy of enthalpy-based methods Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-05-19 Jiří Malík, Ondřej Souček
Purpose This paper aims to propose a semi-analytical benchmarking framework for enthalpy-based methods used in problems involving phase change with latent heat. The benchmark is based on a class of semi-analytical solutions of spatially symmetric Stefan problems in an arbitrary spatial dimension. Via a public repository this study provides a finite element numerical code based on the FEniCS computational
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Effect of impeller inlet diameter on saddle-shaped positive slope and non-uniform flow patterns at low flow rates of a mixed-flow pump Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-05-17 Yong-In Kim, Hyeon-Mo Yang, Kyoung-Yong Lee, Young-Seok Choi
Most mixed-flow pumps obtain a saddle-like Q-P curve with a backflow, owing to the increased incidence angle at low flow rates. The backflow was developed near the shroud and followed downstream again at its end to form a recirculating flow. The rotating stall, which could be a part of the recirculating flow, followed the impeller’s rotational direction, and its properties affected the local stability
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Erosion-corrosion behavior of Nickel based alloys in supercritical water oxidation environment J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-05-11 Jianqiao Yang, Shuzhong Wang, Jiahuan Wang, Jinlong Wang, Baoquan Zhang, Lu Liu, Wei Liu, Yanhui Li, Donghai Xu
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An inverse analysis of the brain cooling process in neonates using the particle filter method Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-05-17 Felipe Sant'Anna Nunes, Helcio R.B. Orlande, Andrzej J. Nowak
Purpose This study deals with the computational simulation and inverse analysis of the cooling treatment of the hypoxic-ischemic encephalopathy in neonates. A reduced-order model is implemented for real-time monitoring of the internal body temperatures. The purpose of this study is to sequentially estimate the transient temperatures of the brain and other body regions with reduced uncertainties. D
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Dynamics of expanding gas from supercritical state in conical nozzle and cluster formation J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-05-16 Alexander V. Lazarev, Timur A. Semenov, Elena D. Belega, Vyacheslav M. Gordienko
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A Modified Turbulent Model for the Supercritical Water Flows in the Vertical Upward Channels J. Supercrit. Fluids (IF 4.577) Pub Date : 2022-05-15 Huirui Han, Chao Zhang
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Numerical study on the effect of tangential intake on vortex dropshaft assessment using pressure distributions Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-05-12 Lu Chang, Wangru Wei
Dropshafts with tangential intakes are common structures in urban water drainage systems. The plunging and vortex flowpatterns are the typical flow regimes, which are mainly affected by the tangential intake design and flood discharge. However, thehydraulic flow transition between vortex and plunging flow patterns has received little attention, which may affect the dropshaftoperation during extreme
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Numerical study on the stability enhancement mechanism of self-recirculating casing treatment in a counter-rotating axial-flow compressor Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-05-12 Yanchao Guo, Xiaochen Mao, Limin Gao, Yibo Yu
Counter-rotating axial-flow compressor (CRAC) is a promising technology to increase the thrust-to-weight ratio of aero-engines. Self-recirculating casing treatment (SRCT) is selected to explore its stability enhancement capacity in the CRAC. In the present work, an effective SRCT is designed by the design of experiment method, and the stability improvement potential of the SRCT and its mechanism of
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Mitigating crosswind effect on high-speed trains by active blowing method: a comparative study Eng. Appl. Comput. Fluid Mech. (IF 8.391) Pub Date : 2022-05-10 Zheng-Wei Chen, Yi-Qing Ni, You-Wu Wang, Su-Mei Wang, Tang-Hong Liu
To reduce the crosswind effect on high-speed trains, in this paper, by using the Improved Delayed Detached Eddy Simulation (IDDES) method and the SST k−ω turbulence model, a novel blowing measure is studied and compared by considering different positions of blowing slots on the train surface. The concerned blowing positions on the train surface include the top position (Top); windward side (WWS): the
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Evaluation of modified turbulent viscosity on shedding dynamic of three-phase cloud cavitation around hydrofoil – numerical/experimental analysis Int. J. Numer. Methods Heat Fluid Flow (IF 4.17) Pub Date : 2022-05-13 Emad Hasani Malekshah, Wlodzimierz Wróblewski, Krzysztof Bochon, Mirosław Majkut
Purpose This paper aims to focus on the cavitating flow around the Clark-Y hydrofoil when the dissolved air is taken into account as the third phase. As the RNG k-epsilon model yields poor prediction due to overestimation of viscosity, the modification approaches including density corrected method, filter-based model and filter-based density correction model are used, and the turbulence model is modified