Numerical Simulation of Two-Phase Flow in Injection Nozzles: Interaction of Cavitation and External Jet Formation

Author:

Yuan Weixing1,Schnerr Gu¨nter H.2

Affiliation:

1. Aerodynamics Laboratory, Institute for Aerospace Research, National Research Council of Canada, Ottawa, ON K1A OR6, Canada

2. Fachgebiet Gasdynamik, Lehrstuhl fu¨r Fluidmechanik, Technische Universita¨t Mu¨nchen, D-85747 Garching, Germany

Abstract

The present investigation demonstrates the strong interaction of cavitating nozzle flow with the outside jet formation. Due to the strong sensitivity of cavitation on the imposed boundary conditions, simulations with restriction on the internal problem are qualitatively and quantitatively incorrect, so that phenomena like hydraulic flip and supercavitation cannot be revealed. Our results indicate the potential of cavitation for enhancement of atomization and spray quality.

Publisher

ASME International

Subject

Mechanical Engineering

Reference21 articles.

1. Wu, K.-J., Su, C.-C., Steinberger, R. L., Santavicca, D. A., and Bracco, F. V., 1983, “Measurements of the Spray Angle of Atomizing Jets,” ASME J. Fluids Eng., 105, pp. 406–413.

2. Chaves, H., Knapp, M., Kubitzek, A., Obermeier, F., and Schneider, T., 1995, “Experimental Study of Cavitation in the Nozzle Hole of Diesel Injectors Using Transparent Nozzles,” SAE Paper 950290.

3. Yuan, W., and Schnerr, G. H., 2002, “Optimization of Two-Phase Flow in Injection Nozzles—Interaction of Cavitation and External Jet Formation,” Proc. 2002 ASME Fluids Engineering Division Summer Meeting, Montreal, Canada, July 14–18.

4. Wilcox, D. C., 1998, Turbulence Modeling for CFD, DCW Industries, La Can˜ada, CA.

5. Sauer, J., and Schnerr, G. H., 2000, “Unsteady Cavitating Flow—A New Cavitation Model Based on a Modified Front Capturing Method and Bubble Dynamics,” Proceedings of 2000 ASME Fluid Engineering Summer Conference, Boston, MA, June 11–15.

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