JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Print ISSN : 0021-9592
Special Issue for the International Workshop on Process Intensification (IWPI) 2010
Marangoni Flows in Polymer Solution Droplets Drying on Heating Surfaces
Shohei YasumatsuKouichi NakasoJun Fukai
Author information
JOURNALS OPEN ACCESS

Volume 45 (2012) Issue 2 Pages 128-135

Details
Download PDF (2804K) Contact us
Abstract

The effect on substrate temperature on the fluid dynamics in a polymer solution droplet evaporating on a substrate is investigated experimentally and numerically. It is found from the experiments that fluid velocities in the droplets increase with increasing initial substrate temperature and with decreasing initial solute concentration. A mathematical model, which takes thermal and solutal Marangoni effects into account, are numerically solved using a finite element method. The calculated fluid velocities agree with the experiment. Both experiments and calculations show that, though thermal Marangoni forces dominate the fluid dynamics, solute Marangoni forces should never be neglected. The calculations predict that solute Marangoni effects are more emphasized with decreasing contact angle.

Information related to the author
© 2012 The Society of Chemical Engineers, Japan
Previous article Next article

Recently visited articles
feedback
Top