Laminar film condensation of pseudo-plastic non-Newtonian fluid with variable thermal conductivity on an isothermal vertical plate

作者：Si, Xinhui^*; Zhu, Xiandong; Zheng, Liancun; Zhang, Xinxin; Lin, Ping

来源：International Journal of Heat and Mass Transfer, 2016, 92: 979-986.

DOI：10.1016/j.ijheatmasstransfer.2015.09.061

• Power-law fluids
• Laminar film condensation
• Dual solutions
• The generalized Prandtl number
• Variable thermal conductivity

In this paper, we examine the laminar film condensation of pseudo-plastic non-Newtonian fluids with variable thermal conductivity on an isothermal vertical plate. The thermal conductivity is assumed to be power-law-dependent on the velocity gradient. The dual similar solutions, which are influenced by the parameters of the power law number n and the thickness no of the condensation film, are obtained numerically by Runge Kutta method coupled with shooting method. More attention is paid to discuss the first branch of the solutions with physical meaning. Especially the effects of above both parameters on the velocity and temperature distribution, condensation mass flow rate and the local Nusselt number are analyzed in detail.

• 出版日期2016-1
• 单位北京科技大学