Thermal and Solutal Mixed Marangoni Boundary Layers with Suction or Injection Effects

  • Noraini Ahmad UiTM
  • Seripah Awang Kechil UiTM
  • Norma Mohd Basir UiTM
Keywords: marangoni convection, surface tension, similarity solution, suction or injection effect

Abstract

A steady two-dimensional Marangoni boundary-layer flow over a permeable flat surface is considered. The surface tension is assumed to vary linearly with temperature and solute concentration. The transformed similarity boundary layer equations are obtained and solved numerically by Runge-Kutta-Fehlberg with shooting technique. The Marangoni and external pressure gradient effects that generated in boundary layer flow are assessed. As the suction/ injection parameter increases from injection to suction, the velocity, temperature and concentration boundary layers thickness decrease but injection increases them. The thermosolutal surface tension ratio increases the velocity boundary thickness but decreases the temperature and concentration boundary layers.

Author Biographies

Noraini Ahmad, UiTM
Faculty of Computer and Mathematical Sciences, Universiti Teknolog MARA
40450 UiTM Malaysia, Shah Alam, Selangor Darul Ehsan, Malaysia.
Seripah Awang Kechil, UiTM
Faculty of Computer and Mathematical Sciences, Universiti Teknolog MARA
40450 UiTM Malaysia, Shah Alam, Selangor Darul Ehsan, Malaysia.
Norma Mohd Basir, UiTM
Faculty of Computer and Mathematical Sciences, Universiti Teknolog MARA
40450 UiTM Malaysia, Shah Alam, Selangor Darul Ehsan, Malaysia.
Published
2012-12-20
How to Cite
Ahmad, N., Awang Kechil, S., & Mohd Basir, N. (2012). Thermal and Solutal Mixed Marangoni Boundary Layers with Suction or Injection Effects. Journal of Science and Technology, 4(2). Retrieved from https://publisher.uthm.edu.my/ojs/index.php/JST/article/view/607
Section
Articles