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

Xinhui Si, Xiandong Zhu, Liancun Zheng, Xinxin Zhang, Ping Lin

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

n 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 ηδ 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.
Original languageEnglish
Pages (from-to)979-986
JournalInternational Journal of Heat and Mass Transfer
Volume92
Early online date22 Oct 2015
DOIs
Publication statusPublished - Jan 2016

Keywords

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

Cite this