Faculty Publications

Title

Noninvasive measurement of viscosity from damping of capillary waves

Document Type

Article

Keywords

Capillary waves, Fluid viscosity, Laser interferometry, Noninvasive measurement, Wave attenuation

Journal/Book/Conference Title

ISA Transactions

Volume

42

Issue

1

First Page

3

Last Page

8

Abstract

Capillary waves are surface waves on fluids with wavelengths in the millimeter range. The determination of viscosity from the damping of capillary waves is of great practical importance as it affords the possibility of measuring the viscosity of fluids noninvasively. In this paper a noncontact method for generation and detection of capillary waves on fluid is described. A miniature laser interferometer is employed to measure noninvasively the wave amplitude and its attenuation with a resolution of about 10 nm. As a test case, the attenuation data for capillary waves on pure water are used to obtain the kinematic viscosity of water as a function of temperature. The results compare favorably with the most reliable published data on the subject. © 2003 ISA - The Instrumentation, Systems, and Automation Society.

Original Publication Date

1-1-2003

DOI of published version

10.1016/s0019-0578(07)60108-6

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