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Flow of Oldroyd-B Fluid over a Rotating Disk Through Porous Medium with Soret–Dufour Effects
Arabian Journal for Science and Engineering ( IF 2.9 ) Pub Date : 2020-06-02 , DOI: 10.1007/s13369-020-04575-7
Abdul Hafeez , Masood Khan , Jawad Ahmed , Awais Ahmed , Zahoor Iqbal

A study of Darcy flow of magnetized Oldroyd-B fluid over a rotating porous disk is analyzed. The heat and mass transport mechanism are analyzed with the significant features of thermal diffusion (Soret) and diffusion thermo (Dufour). Additionally the influence of chemical reaction is also considered on solutal field. The Von Karman transformations are used and in order to obtain the similarity equations which are then integrated numerically on \(\left[ 0,\infty \right) \) through BVP Midrich technique in Maple. The results are given through graphical structure and tabular form. A brief parametric survey is conducted against velocity fields, temperature and concentration distributions in the form of graphs. The corresponding heat transfer rate and wall concentration gradient are displayed through tables with different physical effects. The comparison tables are presented to assure the validity of our numerical scheme with the past outcomes. It is revealed that the velocity fields decline with the effect of porosity parameter. The heat transfer rate rises significantly with diminishing value of Soret number.



中文翻译:

Oldroyd-B流体在多孔圆盘上通过具有Soret–Dufour效应的多孔介质流动

分析了磁化Oldroyd-B流体在旋转多孔盘上的达西流动的研究。分析了传热和传质机理,具有热扩散(Soret)和扩散热(Dufour)的显着特征。另外,还考虑了化学反应对溶液田的影响。使用Von Karman变换并获得相似性方程,然后将其数字化积分到\(\ left [0,\ infty \ right)\)通过Maple中的BVP Midrich技术。通过图形结构和表格形式给出结果。针对速度场,温度和浓度分布以图形形式进行了简短的参数调查。通过具有不同物理效果的表显示相应的传热速率和壁浓度梯度。提出比较表以确保我们的数值方案与过去的结果的有效性。结果表明,速度场随孔隙度参数的影响而减小。传热速率随着Soret值的减小而显着提高。

更新日期:2020-06-02
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