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Experimental evaluation of numerical simulation of cavitating flow around hydrofoil. (English) Zbl 1065.76502

Summary: Cavitation in hydraulic machines causes different problems that can be related to its unsteady nature. An experimental and numerical study of developed cavitating flow was performed. Until now simulations of cavitating flow were limited to the self developed “in house” CFD codes. The goal of the work was to experimentally evaluate the capabilities of a commercial CFD code (FLUENT) for simulation of a developed cavitating flow. Two simple hydrofoils that feature some 3D effects of cavitation were used for the experiments. A relatively new technique where PIV method was combined with LIF technique was used to experimentally determine the instantaneous and average velocity and void ratio fields (cavity shapes) around the hydrofoils. Distribution of static pressure on the hydrofoil surface was determined. For the numerical simulation of cavitating flow, a bubble dynamics cavitation model was used to describe the generation and evaporation of vapour phase. An unsteady RANS 3D simulation was performed. Comparison between numerical and experimental results shows good correlation. The distribution and size of vapour structures and the velocity fields agree well. The distribution of pressure on the hydrofoil surface is correctly predicted. The numerically predicted shedding frequencies are in fair agreement with experimental data.

MSC:

76-05 Experimental work for problems pertaining to fluid mechanics
76T10 Liquid-gas two-phase flows, bubbly flows
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[1] Sirok, B.; Dular, M.; Novak, M.; Hocevar, M.; Stoffel, B.; Ludwig, G.; Bachert, B., The influence of cavitation structures on the erosion of a symmetrical hydrofoil in a cavitation tunnel, J. Mech. Engrg., 48, 7 (2002), (Ljubljana, Slovenia)
[2] Stutz, B.; Reboud, J. L., Experiment on unsteady cavitation, Exp. Fluids, 22, 191-198 (1997) · Zbl 1185.76015
[3] Stutz, B.; Reboud, J. L., Measurements within unsteady cavitation, Exp. Fluids, 29, 545-552 (2000)
[4] Zhang, Y.; Gopalan, S.; Katz, J., On the flow structure and turbulence in the closure region of attached cavitation, (22nd ONR Symp. on Naval Hydrodynamics (1998)), 227-238
[5] Laberteaux, K. R.; Ceccio, S. L., Partial cavity flows. Part 1. Cavities forming on models without spanwise variation, J. Fluid Mech., 431, 1-41 (2001) · Zbl 0969.76504
[6] Laberteaux, K. R.; Ceccio, S. L., Partial cavity flows. Part 2. Cavities forming on test objects with spanwise variation, J. Fluid Mech., 431, 43-63 (2001) · Zbl 0969.76504
[7] Friedrichs, J.; Kosyna, G., Unsteady PIV flow field analysis of a centrifugal pump impeller under rotating cavitation, (Proceedings of the Fifth International Symposium on Cavitation, Osaka, Japan (2003))
[8] Bachert, R.; Stoffel, B.; Schilling, R.; Frobenius, M., Three-dimensional, unsteady cavitation effects on a single hydrofoil and in a radial pump – measurements and numerical simulations; Part one: Experiments, (Proceedings of the Fifth International Symposium on Cavitation, Osaka, Japan (2003))
[9] Kubota, A.; Hiroharu, K.; Yamaguchi, H., A new modelling of cavitating flows, a numerical study of unsteady cavitation on a hydrofoil section, J. Fluid Mech., 240, 59-96 (1992)
[10] Schnerr, G. H.; Sauer, J., Physical and numerical modelling of unsteady cavitation dynamics, (4th International Conference on Multyphase Flow, ICMF-2001,New Orleans, USA (2001)) · Zbl 1002.76009
[11] Frobenius, M.; Schilling, R.; Bachert, R.; Stoffel, B., Three-dimensional, unsteady cavitation effects on a single hydrofoil and in a radial pump – measurements and numerical simulations, Part two: Numerical simulation, (Proceedings of the Fifth International Symposium on Cavitation, Osaka, Japan (2003))
[12] Alajbegovic, A.; Groger, H. A.; Philipp, H., Calculation of transient cavitation in nozzle using the two-fluid model, (12th Annual Conference on Liquid Atomization and Spray Systems, Indianapolis, IN, USA (1999))
[13] Singhal, A. K.; Li, H.; Atahavale, M. M.; Jiang, Y., Mathematical basis and validation of the full cavitation model, J. Fluids Engrg., 124, 617-624 (2002)
[14] R. Kunz, D. Boger, T. Chyczewski, D. Stinebring, H. Gibeling, Multi-phase CFD analysis of natural and ventilated cavitation about submerged bodies, ASME FEDSM99-7364, SAN Francisco, 1999; R. Kunz, D. Boger, T. Chyczewski, D. Stinebring, H. Gibeling, Multi-phase CFD analysis of natural and ventilated cavitation about submerged bodies, ASME FEDSM99-7364, SAN Francisco, 1999
[15] Merkle, C. L.; Feng, J.; Buelow, P. E.O., Computational modeling of the dynamics of sheet cavitation, (3rd Int. Symp. on Cavitation, Grenoble, France (1998))
[16] Senocak, I.; Shvy, I. W., A pressure-based method for turbulent cavitating flow simulations, J. Comput. Phys., 176, 363-383 (2002) · Zbl 1130.76352
[17] Owis, F. M.; Nayfeh, A. H., Numerical simulation of 3-D incompressible, multi-phase flows over cavitating projectiles, Eur. J. Mech. B Fluids, 23, 339-351 (2004) · Zbl 1068.76082
[18] Delannoy, Y.; Kueny, J. L., Two phase flow approach in unsteady cavitation modelling, (Cavitation and Multiphase Flow Forum, ASME-FED, vol. 98 (1990)), 153-158
[19] Coutier-Delgosha, O.; Fortes-Patella, R.; Reboud, J. L., Evaluation of turbulence model influence on the numerical simulations on unsteady cavitation, J. Fluids Engrg., 125, 38-45 (2003)
[20] Hofmann, M.; Lohrberg, H.; Ludwig, G.; Stoffel B, B.; Reboud, J. L.; Fortes-Patella, R., Numerical and experimental investigations on the self – oscillating behaviour of cloud cavitation - Part 1: Visualisation, (Proceedings of the 3rd ASME/JSME Joint Fluids Engineering Conference, San Francisco, CA (1999))
[21] Lohrberg, H.; Stoffel, B.; Fortes-Patella, R.; Reboud, J. L., Numerical and experimental investigations on the cavitation flow in cascade of hydrofoils, Exp. Fluids, 33, 578-586 (2002)
[22] S Song, C. C.; He, J., Numerical simulation of cavitating flows by single-phase flow approach, (3rd International Symposium on Cavitation, Grenoble, France (1998)), 295-300
[23] M. Hofmann, Ein Beitrag zur verminderung des erosiven Potentials kavitierender Stoemungen - PhD Thesis, Technishe Univesitaet Darmstadt, Darmstadt, 2001; M. Hofmann, Ein Beitrag zur verminderung des erosiven Potentials kavitierender Stoemungen - PhD Thesis, Technishe Univesitaet Darmstadt, Darmstadt, 2001
[24] K. Habr, Gekoppelte Simulation hydraulischer Gesamtsysteme unter Einbeziehung von CFD, PhD Thesis, Technishe Univesitaet Darmstadt, Darmstadt, 2001; K. Habr, Gekoppelte Simulation hydraulischer Gesamtsysteme unter Einbeziehung von CFD, PhD Thesis, Technishe Univesitaet Darmstadt, Darmstadt, 2001
[25] Iwai, Y.; Li, S., Cavitation erosion in waters having different surface tensions, Wear, 254, 1-9 (2003)
[26] Patankar, S. V., Numerical Heat and Fluid Flow (1980), Hemisphere: Hemisphere New York · Zbl 0521.76003
[27] Ferziger, J. H.; Perić, M., Computational Methods for Fluid Dynamics (1999), Springer · Zbl 0943.76001
[28] Reboud, J. L.; Stutz, B.; Coutier, O., Two-phase flow structure of cavitation: experiment and modelling of unsteady effects, (Third International Symposium on Cavitation, Grenoble, France (1998)) · Zbl 1185.76015
[29] Okita, K.; Kajishima, T., Three-Dimensional Computation of Unsteady Cavitating Flow in a Cascade, (The 9th of International Symposium on Transport Phenomena and Dynamics of Rotating Machinery Honolulu, Hawaii (2002))
[30] Knapp, R. T.; Daily, J. W.; Hammitt, F. G., Cavitation (1970), McGraw-Hill: McGraw-Hill London
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