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System and technique for characterizing fluids using ultrasonic diffraction grating spectroscopy

United States Patent

July 8, 2008
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A system for determining property of multiphase fluids based on ultrasonic diffraction grating spectroscopy includes a diffraction grating on a solid in contact with the fluid. An interrogation device delivers ultrasound through the solid and a captures a reflection spectrum from the diffraction grating. The reflection spectrum exhibits peaks whose relative size depends on the properties of the various phases of the multiphase fluid. For example, for particles in a liquid, the peaks exhibit dependence on the particle size and the particle volume fraction. Where the exact relationship is know know a priori, data from different peaks of the same reflection spectrum or data from the peaks of different spectra obtained from different diffraction gratings can be used to resolve the size and volume fraction.
Greenwood; Margaret S. (Richland, WA)
Battelle Memorial Institute (Richland, WA)
11/ 038,843
January 19, 2005
GOVERNMENT RIGHTS This invention was made with Government support under Contract Number DE-AC0576RLO1830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.