MHD boundary layer flow of Casson fluid passing through an exponentially stretching permeable surface with thermal radiation

作     者：Swati Mukhopadhyay Iswar Chandra Moindal Tasawar Hayat 

作者机构：Department of Mathematics The University of Burdwan Department of Mathematics Quaid-i-Azam University 45320 Islamabad Pakistan Department of Mathematics Faculty of Science King Abdulziz University Jeddah 21589 Saudi Arabia 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2014年第23卷第10期

页      面：306-314页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：exponential stretching suction/blowing prescribed heat flux thermal radiation 

摘      要：This article numerically examines the boundary layer flow due to an exponentially stretching surface in the presence of an applied magnetic field. Casson fluid model is used to characterize the non-Newtonian fluid behavior. The flow is subjected to suction/blowing at the surface. Analysis is carded out in presence of thermal radiation and prescribed surface heat flux. In this study, an exponential order stretching velocity and prescribed exponential order surface heat flux are accorded with each other. The governing partial differential equations are first converted into nonlinear ordinary differential equations by using appropriate transformations and then solved numerically. The effect of increasing values of the Casson parameter is to suppress the velocity field. However the temperature is enhanced when Casson parameter increases. It is found that the skin-friction coefficient increases with increasing values of suction parameter. Temperature also increases for large values of power index n in both suction and blowing cases at the boundary. It is observed that the thermal radiation enhances the effective thermal diffusivity and hence the temperature rises.