TY - CONF

T1 - A preconditioned navier-stokes method for two-phase flows with application to Cavitation prediction

AU - Kunz, Robert F.

AU - Boger, Dairid A.

AU - Stinebring, David R.

AU - Chyczewski, Thomas S.

AU - Gibeling, Howard J.

AU - Venkateswaran, Sankararn

AU - Govindan, T. R.

N1 - Funding Information:
This work is supported by the Office of Naval Research, contract # N00014-98-1-0143, with Mr. James Fein and Dr. Kam Ng as contract monitors. The authors acknowledge Brett Siebert, Charles Merkle and Phil Buelow with whom several conversations benefited the present work. This work was supported in part by a grant of HPC resources from the Arctic Region Supercomputing Center and in part by a grant of SGI Origin 2000 HPC time from the DoD HPC Center, Army Research Laboratory Major Shared Resource Center.

PY - 1999

Y1 - 1999

N2 - An implicit algorithm for the computation of viscous two-phase flows is presented. The baseline differential equation system is the multi-phase Navier-Stokes equations, comprised of the mixture volume, mixture momentum and constituent volume fraction equations. Though further generalization is straightforward, a three species formulation is pursued here, which separately accounts for the liquid and vapor (which exchange mass) as well as a non-condensable gas field. The implicit method developed here employs a dual-time, preconditioned, three-dimensional algorithm, with multi-block and parallel execution capabilities. Time-derivative preconditioning is employed to ensure well-conditioned eigenvalues, which is important for the computational efficiency of the method. Special care is taken to ensure that the resulting eigensystem is independent of the density ratio and the local volume fraction, which renders the scheme wellsuited to high density ratio, phase-separated two-fluid flows characteristic of many cavitating and boiling systems. To demonstrate the capabilities of the scheme, several two-dimensional and three-dimensional examples are presented.

AB - An implicit algorithm for the computation of viscous two-phase flows is presented. The baseline differential equation system is the multi-phase Navier-Stokes equations, comprised of the mixture volume, mixture momentum and constituent volume fraction equations. Though further generalization is straightforward, a three species formulation is pursued here, which separately accounts for the liquid and vapor (which exchange mass) as well as a non-condensable gas field. The implicit method developed here employs a dual-time, preconditioned, three-dimensional algorithm, with multi-block and parallel execution capabilities. Time-derivative preconditioning is employed to ensure well-conditioned eigenvalues, which is important for the computational efficiency of the method. Special care is taken to ensure that the resulting eigensystem is independent of the density ratio and the local volume fraction, which renders the scheme wellsuited to high density ratio, phase-separated two-fluid flows characteristic of many cavitating and boiling systems. To demonstrate the capabilities of the scheme, several two-dimensional and three-dimensional examples are presented.

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M3 - Paper

AN - SCOPUS:84983208737

SP - 676

EP - 688

T2 - 14th Computational Fluid Dynamics Conference, 1999

Y2 - 1 November 1999 through 5 November 1999

ER -