Bi-directional Forced Convective Stagnation Points Flow of Oldroyd-B Liquid with Joule Heating Effects: A Finite Difference Simulations

Q2 Mathematics CFD Letters Pub Date : 2024-03-04 DOI:10.37934/cfdl.16.7.2238
Bilal Ahmed
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Abstract

The impact of Joule heating for the three-dimensional stagnation point flow of non-Newtonian liquid (namely Oldroyd-B) nanomaterial has been inspected. The influence of mixed convection and the magnetic force is also considered. The flow is induced by the bidirectional stretched surface which moves linearly. The partial differential equations for the developed model are altered into dimensionless statements first. The numerical simulations with the implementation of a finite difference scheme are used for the numerical description. The physical description of parameters is presented against the flow parameters. The results reveal that there is a reverse change in velocity observed for both the relaxation time constant and the retardation constant. Furthermore, the heat transfer rate decreases as the ratio parameter increases. The thickness of the boundary layer increases due to the retardation time and can also be regulated by the application of a magnetic field. An increase in the magnetic parameter leads to an enhancement in temperature and an increase in thermal boundary layer thickness.
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具有焦耳加热效应的 Oldroyd-B 液体双向强制对流停滞点流动:有限差分模拟
研究了焦耳加热对非牛顿液体(即 Oldroyd-B)纳米材料三维停滞点流动的影响。同时还考虑了混合对流和磁力的影响。流动由线性移动的双向拉伸表面引起。首先将所开发模型的偏微分方程转换为无量纲语句。数值模拟采用有限差分方案进行数值描述。参数的物理描述与流动参数相对应。结果表明,在弛豫时间常数和迟滞常数方面都观察到了速度的反向变化。此外,传热速率随着比率参数的增加而降低。边界层的厚度因延迟时间而增加,也可以通过施加磁场来调节。磁参数的增加会导致温度升高和热边界层厚度增加。
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来源期刊
CFD Letters
CFD Letters Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
3.40
自引率
0.00%
发文量
76
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