A Generalized Compressible Cavitation Model

Hosangadi, Ashvin and Ahuja, V. and Arunajatesan, S. (2001) A Generalized Compressible Cavitation Model. In: CAV 2001 : fourth International Symposium on Cavitation, June 20-23, 2001, California Institute of Technology, Pasadena, CA USA.

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Abstract

A new multi-phase model for low speed gas/liquid mixtures is presented; it does not require ad-hoc closure models for the variation of mixture density with pressure and yields thermodynamically correct acoustic propagation for multi-phase mixtures. The solution procedure has an interface-capturing scheme that incorporates an additional scalar transport equation for the gas void fraction. Cavitation is modeled via a finite rate source term that initiates phase change when liquid pressure drops below its saturation value. The numerical procedure has been implemented within a multi-element unstructured framework CRUNCH that permits the grid to be locally refined in the interface region. The solution technique incorporates a parallel, domain decomposition strategy for efficient 3D computations. Detailed results are presented for sheet cavitation over a cylindrical headform and a NACA 66 hydrofoil.

EPrint Type:	Conference or Workshop Item (Lecture)
Uncontrolled Keywords:	cavitation, multi-phase model, flowfield, turbulence model
Subjects:	All Records Session B5 Bubbly Flows 1
ID Code:	179
Deposited By:	Ashvin Hosangadi
Deposited On:	01 May 2001
Record Number:	CAV2001:sessionB4.003
Official Persistent URL:	http://resolver.caltech.edu/CAV2001:sessionB4.003
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