Effect of Dilute Polymer Additives on the Acoustic Cavitation Threshold of Water

[+] Author and Article Information
L. A. Crum, J. E. Brosey

Department of Physics, The University of Mississippi, Oxford, Miss. 38677

J. Fluids Eng 106(1), 99-104 (Mar 01, 1984) (6 pages) doi:10.1115/1.3242413 History: Received March 30, 1982; Online October 26, 2009


Measurements are presented of the variation of the acoustic cavitation threshold of water with concentration of the polymer additives polyethylene oxide and guar gum. It was found that small amounts of these additives could significantly increase the cavitation threshold. A theoretical model, based upon nucleation of a gas bubble from a Harvey-type crevice in a mote or solid particle, is developed that gives good agreement with the measurements. The applicability of this approach to an explanation of cavitation index reduction in flow-generated or confined jet cavitation, when polymer additives are introduced, is discussed.

Copyright © 1984 by ASME
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