Hussain Syed M
Department of Mathematics, Faculty of Science, Islamic University of Madinah, Medina, 42351, Saudi Arabia.
Sci Rep. 2022 Feb 2;12(1):1751. doi: 10.1038/s41598-022-05703-z.
In this research study, numerical and statistical explorations are accomplished to capture the flow features of the dynamics of ethylene glycol-based hybrid nanofluid flow over an exponentially stretchable sheet with velocity and thermal slip conditions. Physical insight of viscous dissipation, heat absorption and thermal radiation on the flow-field is scrutinized by dissolving the nanoparticles of molybdenum disulfide (MoS) and graphene into ethylene glycol. The governing mathematical model is transformed into the system of similarity equations by utilizing the apt similarity variables. The numerical solution of resulting similarity equations with associated conditions are obtained employing three-stages Lobatto-IIIa-bvp4c-solver based on a finite difference scheme in MATLAB. The effects of emerging flow parameters on the flow-field are enumerated through various graphical and tabulated results. Additionally, to comprehend the connection between heat transport rate and emerging flow parameters, a quadratic regression approximation analysis on the numerical entities of local Nusselt numbers and skin friction coefficients is accomplished. The findings disclose that the suction and thermal radiation have an adverse influence on the skin friction coefficients and heat transport rate. Further, a slight augmentation in the thermal slip factor causes a considerable variation in the heat transport rate in comparison to the radiation effect.
在本研究中,通过数值和统计方法进行探索,以捕捉基于乙二醇的混合纳米流体在具有速度和热滑移条件的指数可拉伸平板上流动的动力学特征。通过将二硫化钼(MoS)和石墨烯纳米颗粒溶解在乙二醇中,研究粘性耗散、热吸收和热辐射对流场的物理影响。利用合适的相似变量将控制数学模型转化为相似方程组。基于MATLAB中的有限差分格式,采用三阶Lobatto-IIIa-bvp4c求解器获得了具有相关条件的相似方程组的数值解。通过各种图形和表格结果列举了新出现的流动参数对流场的影响。此外,为了理解热传输速率与新出现的流动参数之间的关系,对局部努塞尔数和表面摩擦系数的数值进行了二次回归近似分析。结果表明,抽吸和热辐射对表面摩擦系数和热传输速率有不利影响。此外,与辐射效应相比,热滑移因子的轻微增加会导致热传输速率发生显著变化。