Noncontact measurement of viscosity
Capillary waves, Fluid viscosity, Noninvasive measurement, Wave attenuation
ISA TECH/EXPO Technology Update Conference Proceedings
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. Here we describe a noninvasive method for generation and detection of capillary waves on fluids. Our technique utilizes a miniature laser interferometer to measure noninvasively the wave amplitude and its attenuation with a resolution of about ten nanometers. As a test case, the attenuation data for capillary waves on pure water is used to obtain the viscosity of water as a function of temperature.
Original Publication Date
Behroozi, F.; Lambert, B.; and Buhrow, B., "Noncontact measurement of viscosity" (2001). Faculty Publications. 3587.