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TECHNICAL PAPERS

Simulations of Cavitating Flows Using Hybrid Unstructured Meshes

[+] Author and Article Information
Vineet Ahuja, Ashvin Hosangadi, Srinivasan Arunajatesan

Combustion Research and Flow Technology, Inc. (CRAFT Tech), P.O. Box 1150, Dublin, PA 18917

J. Fluids Eng 123(2), 331-340 (Jan 29, 2001) (10 pages) doi:10.1115/1.1362671 History: Received April 05, 2000; Revised January 29, 2001
Copyright © 2001 by ASME
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References

Kubota,  A., Kato,  H., and Yamaguchi,  H., 1992, “Cavity Flow Predictions Based on the Euler Equations,” J. Fluid Mech., 240, pp. 59–96.
Chen,  Y., and Heister,  S. D., 1996, “Modeling Hydrodynamic Nonequilibrium in Cavitating Flows,” ASME J. Fluids Eng., 118, pp. 172–178.
Delaunay, Y., and Kueny, J. L., 1990, “Cavity Flow Predictions based on the Euler Equations,” ASME Cavitation and Multi-Phase Flow Forum, Vol. 109, pp. 153–158.
Janssens, M. E., Hulshoff, S. J., and Hoeijmakers, H. W. M., 1997, “Calculation of Unsteady Attached Cavitation,” AIAA-97-1936, 13th AIAA CFD Conferences, Snowmass, CO, June 29–July 2.
Merkle, C. L., Feng, J. Z. and Buelow, P. E. O., 1998, “Computational Modeling of the Dynamics of Sheet Cavitation,” Proceedings of the 3rd International Symposium on Cavitation, Grenoble.
Kunz, R. F., et al., 1999, “A Preconditioned Navier-Stokes Method for Two-Phase Flows with Application to Cavitation Prediction,” 14th AIAA CFD Conference, Norfolk, VA, June 28–July 1.
Ahuja, V., Hosangadi, A., Ungewitter, R., and Dash, S. M., 1999, “A Hybrid Unstructured Mesh Solver for Multi-Fluid Mixtures,” AIAA-99-3330, 14th AIAA CFD Conference, Norfolk, VA, June 28–July 1.
Hosangadi, A., Sinha, N., and Dash, S. M., 1997, “A Unified Hyperbolic Interface Capturing Scheme for Gas/Liquid Flows,” AIAA-97-2081, 13th AIAA CFD Conferences, Snowmass, CO, June 29–July 2.
Hosangadi, A., Lee, R. A., Cavallo, P. A., Sinha, N., and York, B. J., 1998, “Hybrid, Viscous, Unstructured Mesh Solver for Propulsive Applications,” AIAA-98-3153, AIAA 34th JPC, Cleveland, OH, July 13–15.
So,  R. M. C., Sarkar,  A., Gerodimos,  G., and Zhang,  J., 1997, “A Dissipation Rate Equation for Low Reynolds Number and Near-Wall Technique,” Theor. Comput. Fluid Dyn., 9, pp. 47–63.
Hosangadi,  A., Lee,  R. A., York,  B. J., Sinha,  N., and Dash,  S. M., 1996, “Upwind Unstructured Scheme for Three-Dimensional Combusting Flows,” J. Propul. Power, 12, No. 3, May–June, pp. 494–503.
Barth, T. J., 1991, “A 3-D Upwind Euler Solver for Unstructured Meshes,” AIAA-91-1548, 10th AIAA CFD Conference, Honolulu, HI, June.
Barth, T. J., and Linton, S. W., 1995, “An Unstructured Mesh Newton Solu-tion for Compressible Fluid Flow and Its Parallel Implementation,” AIAA-95-0221, 33th AIAA Aerospace Sciences Meeting at Reno, NV, Jan 9–14.
Rouse, H., and McNown, J. S., 1948, “Cavitation and Pressure Distribution: Head Forms at a Zero Angle of Yaw,” Technical Report: State University of Iowa Engineering Bulletin No. 32.
Shen, Y. T., and Dimotakis, P., 1989, “The Influence of Surface Cavitation on Hydrodynamic Forces,” 22nd American Towing Tank Conference, St Johns, NF, August 8–11.
Singal, A. K., Vaidya, N., and Leonard, A. D., 1997, “Multi-Dimensional Simulation of Cavitating Flows Using a PDF Model for Phase Change,” FEDSM97-3272, 1997 ASME Fluids Engineering Division Summer Meeting, Vancouver, British Columbia, Canada, June 22–26.

Figures

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Cavitation bubbles indicated by void fraction contours on the NACA 66 modified hydrofoil at cavitation numbers of (a) 0.91 and (b) 0.84
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Speed-of-sound in a two-phase gas-liquid mixture
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Flow streamlines depicting recirculation zone/re-entrant jet in the cavity closure region
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Cavitation zone and surface pressure profiles at various cavitation numbers for hemisphere/cylinder headform
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The prismatic/tetrahedral grid used to capture cavitation on the NACA 66 modified hydrofoil
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A representative pressure distribution on the NACA 66 hydrofoil at 4 degrees angle of attack and cavitation number of 0.84
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Surface pressure distribution on the NACA 66 hydrofoil using wall-function procedure
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Resolution of the cavitation zone interface on the numerical grid
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Turbulent viscosities (μtL) contours in the headform cavity flowfield
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Sensitivity of cavitation solution to the cavitation source term rate

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