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Numerical Simulations of a Miscible Drop in a Spinning Drop Tensiometer

Published online by Cambridge University Press:  05 May 2011

Ching-Yao Chen  and
K.-T. Liu
Ching-Yao Chen*
Affiliation:
Department of Mechanical Engineering, National Yunlin University of Science & Technology, Yunlin, Taiwan 64002, R.O.C.
K.-T. Liu*
Affiliation:
Department of Mechanical Engineering, National Yunlin University of Science & Technology, Yunlin, Taiwan 64002, R.O.C.
*
*Professor
**Graduate student
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Abstract

The present investigation addresses the estimation of the unconventional effective interfacial tension (EIT), the so-called Korteweg stress, for a miscible interface. Two independent characteristic estimations are calculated: (1) the measurement based on a Spinning Drop Tensiometer (SDT) commonly applied in an immiscible situation, and (2) the theoretical predication involving an unknown physical constant (Korteweg constant) and detailed concentration distributions. Excellent agreements between these two estimations are found. By demonstrating the excellent agreement between these two proposed measurements, the applicability of a SDT for measuring miscible EIT is numerically verified. This numerical conclusion provides a possible simple method for further estimations of currently unknown physical constants.

Keywords

Miscible InterfaceEffective Interfacial TensionSpinning Drop TensiometerKorteweg Constant.
Type
Articles
Information
Journal of Mechanics , Volume 23 , Issue 1 , March 2007 , pp. 1 - 7
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2007

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