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Hybrid nanofluid on mixed convective radiative flow from an irregular variably thick moving surface with convex and concave effects
Case Studies in Thermal Engineering ( IF 6.8 ) Pub Date : 2020-05-21 , DOI: 10.1016/j.csite.2020.100660
Umair Khan , Anum Shafiq , A. Zaib , Dumitru Baleanu

The analysis explores the significance of thermal radiation on mixed convective boundary layer flow of a hybrid (SiO2–MoS2/H2O) nanofluid. The permeability of the stretched/shrinking surface is allowing the wall fluid suction, whereas radiation phenomenon is also incorporated in the presence of thermal convection. The combination of SiO2 nanoparticles and MoS2/H2O nanofluid are being modeled using the analytical nanofluid hybrid model in the present work. The hybrid nanofluid governing equations are transformed utilizing the similarity transformation technique. The transformed boundary value problem, then solved by bvp4c technique in MATLAB software. For specified values of various parameters the numerical results are obtained. The findings indicate dual solutions, up to some amount of stretching/shrinking parameter. The suction parameter decelerates the friction factor and accelerates the heat transfer rate. Also, the temperature augments due to the radiation and nanoparticles volume fraction in both solutions, whereas the velocity declines due to nanoparticles volume fraction.



中文翻译:

混合纳米流体对不规则可变厚度运动表面具有凸凹效应的混合对流辐射流的影响

分析探讨了热辐射对杂化(SiO 2 -MoS 2 / H 2 O)纳米流体的混合对流边界层流的重要性。拉伸/收缩表面的渗透性允许壁流体吸引,而在存在热对流的情况下也引入了辐射现象。SiO 2纳米颗粒与MoS 2 / H 2的组合在本工作中,正在使用分析纳米流体混合模型对O纳米流体进行建模。利用相似变换技术对混合纳米流体控制方程进行变换。转换后的边值问题,然后通过MATLAB软件中的bvp4c技术解决。对于各种参数的指定值,可以获得数值结果。研究结果表明双重解决方案,直至一定程度的拉伸/收缩参数。吸力参数会降低摩擦系数并加快传热速率。而且,由于两种溶液中的辐射和纳米颗粒体积分数,温度升高,而由于纳米颗粒体积分数,速度下降。

更新日期:2020-05-21
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