Purpose

The purpose of this study is to analyze hybrid nanofluid (MWCNTs+Ag+Kerosene oil) over a stretched cylinder. Flow analysis is carried out in presence of stagnation-point. Features of heat transport are examined via melting conditions.

Design/methodology/approach

Governed expression (partial differential equations) for flow and heat transfer are transmitted into ordinary differential equations (ODEs) via applying adequate transformations. For solutions development shooting method (bvp4c) is used on these non-linear coupled ODEs.

Findings

Comparative observation among hybrid nanofluid (MWCNTs+Ag+Kerosene oil), basefluid (kerosene oil) and nanofluid (MWCNTs+Kerosene oil) are performed. Influences of physical parameters on heat transfer rate, velocity, skinfriction coefficient and temperature are visualized graphically. Higher values nanoparticle volume fractions, curvature parameter, melting parameter and velocity ratio parameter lead to intensification in the velocity profile. The temperature of the fluid reduces with higher values nanoparticle volume fractions, curvature parameter and melting parameter. The surface friction coefficient is minimized via a higher melting parameter and velocity ratio parameter. Heat transmission rate intensifies with velocity ratio parameter, nanoparticle volume friction and curvature parameter while it reduces gradually with larger melting parameter. During comparative study performance of hybrid nanomaterial (MWCNTs+Ag+Kerosene oil) is outstanding and is proceeded by nanomaterial (MWCNTs+ Kerosene oil) and basefluid (kerosene oil).

Originality/value

In the presented study authors have analyzed the flow of hybrid nanomaterial (MWCNTs+Ag+Kerosene oil) by a stretching cylinder. The further cylinder is subjected to stagnation point and melting condition. The authors believe that all the consequences of the presented study and numerical technique (bvp4c) are original and not published before.

中文翻译：

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混合纳米材料（MWCNTs+Ag+煤油）驻点流动中熔化传热的数值研究

目的

本研究的目的是分析拉伸圆柱体上的混合纳米流体（MWCNTs+Ag+煤油）。流动分析是在存在停滞点的情况下进行的。通过熔化条件检查热传输的特征。

设计/方法/方法

通过应用适当的变换，流动和传热的受控表达式（偏微分方程）被转换为常微分方程 (ODE)。在这些非线性耦合 ODE 上使用解决方案开发射击方法 (bvp4c)。

发现

对混合纳米流体（MWCNTs+Ag+煤油）、基液（煤油）和纳米流体（MWCNTs+煤油）进行对比观察。物理参数对传热速率、速度、皮肤摩擦系数和温度的影响以图形方式显示。较高值的纳米颗粒体积分数、曲率参数、熔化参数和速度比参数会导致速度剖面的增强。流体的温度随着纳米颗粒体积分数、曲率参数和熔化参数的值升高而降低。表面摩擦系数通过更高的熔化参数和速度比参数被最小化。传热速率随着速度比参数、纳米颗粒体积摩擦和曲率参数的增加而增大，而随着熔化参数的增大而逐渐减小。

原创性/价值

在本研究中，作者通过拉伸圆柱体分析了混合纳米材料（MWCNTs+Ag+煤油）的流动。另一个圆柱体经受驻点和熔化条件。作者认为，所提出的研究和数值技术 (bvp4c) 的所有结果都是原创的，之前没有发表过。