Ishaq Mohammad, Ali Gohar, Shah Zahir, Islam Saeed, Muhammad Sher
Depatment of Mathematics, Islamia College University, Peshawar 25000, Khyber Pakhtunkhwa, Pakistan.
Depatment of Mathematics, Abdul Wali Khan University, Mardan 32300, Khyber Pakhtunkhwa, Pakistan.
Entropy (Basel). 2018 May 28;20(6):412. doi: 10.3390/e20060412.
This research paper investigates entropy generation analysis on two-dimensional nanofluid film flow of Eyring-Powell fluid with heat amd mass transmission over an unsteady porous stretching sheet in the existence of uniform magnetic field (MHD). The flow of liquid films are taken under the impact of thermal radiation. The basic time dependent equations of heat transfer, momentum and mass transfer are modeled and converted to a system of differential equations by employing appropriate similarity transformation with unsteady dimensionless parameters. Entropy analysis is the main focus in this work and the impact of physical parameters on the entropy profile are discussed in detail. The influence of thermophoresis and Brownian motion has been taken in the nanofluids model. An optima approach has been applied to acquire the solution of modeled problem. The convergence of the HAM (Homotopy Analysis Method) has been presented numerically. The disparity of the Nusslet number, Skin friction, Sherwood number and their influence on the velocity, heat and concentration fields has been scrutinized. Moreover, for comprehension, the physical presentation of the embedded parameters are explored analytically for entropy generation and discussed.
本文研究了在均匀磁场（磁流体动力学，MHD）存在的情况下，具有热质传递的艾林 - 鲍威尔流体二维纳米流体薄膜在不稳定多孔拉伸片上流动时的熵产生分析。液膜流动考虑了热辐射的影响。通过采用具有非稳定无量纲参数的适当相似变换，对传热、动量和传质的基本时变方程进行建模并转换为微分方程组。熵分析是本工作的重点，详细讨论了物理参数对熵分布的影响。纳米流体模型中考虑了热泳和布朗运动的影响。应用了一种优化方法来求解建模问题。通过数值方法给出了同伦分析方法（HAM）的收敛性。详细研究了努塞尔数、表面摩擦、舍伍德数的差异及其对速度、热和浓度场的影响。此外，为便于理解，对嵌入参数的物理表现进行了解析探讨，以分析熵产生并进行讨论。
