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Numerical Simulations of a Miscible Drop in a Spinning Drop Tensiometer

  • Ching-Yao Chen (a1) and K.-T. Liu (a1)

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.

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**Graduate student

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Keywords

Numerical Simulations of a Miscible Drop in a Spinning Drop Tensiometer

  • Ching-Yao Chen (a1) and K.-T. Liu (a1)

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