A computational approach based on the conservative form of the Favre-averaged Navier-Stokes equations, transport equation-based turbulent cavitation models and a pressure-based operator-splitting algorithm is applied to study turbulent cavitating flows through convergent-divergent nozzles. The implications of the compressibility effect, reflected via the speed of sound definition in the two-phase mixture, are assessed with two modeling approaches. Depending on the geometric confinement of the nozzle, compressibility model, and cavitation numbers, auto-oscillations and quasi-steady behaviors are observed. Detailed flow structures and cavitation dynamics are highlighted, and implications of the cavitation model discussed.
Computations of Unsteady Cavitation With a Pressure-Based Method
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Senocak, I, & Shyy, W. "Computations of Unsteady Cavitation With a Pressure-Based Method." Proceedings of the ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. Volume 2: Symposia, Parts A, B, and C. Honolulu, Hawaii, USA. July 6–10, 2003. pp. 1393-1399. ASME. https://doi.org/10.1115/FEDSM2003-45009
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