MHD three dimensional flow of viscoelastic fluid with thermal radiation and variable thermal conductivity
来源期刊：中南大学学报(英文版)2014年第10期
论文作者：SHEHZAD S A HAYAT T ALSAEDI A
文章页码：3911 - 3917
Key words：three dimensional flow; viscoelastic fluid; variable thermal conductivity; thermal radiation
Abstract: The objective of the present work is to model the magnetohydrodynamic (MHD) three dimensional flow of viscoelastic fluid passing a stretching surface. Heat transfer analysis is carried out in the presence of variable thermal conductivity and thermal radiation. Arising nonlinear analysis for velocity and temperature is computed. Discussion to importantly involved parameters through plots is presented. Comparison between present and previous limiting solutions is shown. Numerical values of local Nusselt number are computed and analyzed. It can be observed that the effects of viscoelastic parameter and Hartman number on the temperature profile are similar in a qualitative way. The variations in temperature are more pronounced for viscoelastic parameter K in comparison to the Hartman number M. The parameters N and ε give rise to the temperature. It is interesting to note that values of local Nusselt number are smaller for the larger values of ε.
SHEHZAD S A1, HAYAT T1, 2, ALSAEDI A2
(1. Department of Mathematics, Comsats Institute of Information Technology, Sahiwal 57000, Pakistan;
2. Department of Mathematics, Quaid-i-Azam University, Islamabad 44000, Pakistan;
3. Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia)
Abstract:The objective of the present work is to model the magnetohydrodynamic (MHD) three dimensional flow of viscoelastic fluid passing a stretching surface. Heat transfer analysis is carried out in the presence of variable thermal conductivity and thermal radiation. Arising nonlinear analysis for velocity and temperature is computed. Discussion to importantly involved parameters through plots is presented. Comparison between present and previous limiting solutions is shown. Numerical values of local Nusselt number are computed and analyzed. It can be observed that the effects of viscoelastic parameter and Hartman number on the temperature profile are similar in a qualitative way. The variations in temperature are more pronounced for viscoelastic parameter K in comparison to the Hartman number M. The parameters N and ε give rise to the temperature. It is interesting to note that values of local Nusselt number are smaller for the larger values of ε.
Key words:three dimensional flow; viscoelastic fluid; variable thermal conductivity; thermal radiation
