Study of cavitation and supercavitation around a ۳D cylinder using DifferentTurbulence and Mass Transfer Models

In this paper cavitation and supercavitation aroundhemispherical head form body was simulated. A finitevolume solver benefiting from the VOF interfacecapturing method, large eddy simulation (LES), k-ω SSTturbulence models and Kunz, or Sauer mass transfermodels were employed to capture unsteady Cavitationand supercavitation flow. cavitation numbers,of, i.e.,σ=۰.۵, ۰.۴, ۰.۲, ۰.۱, ۰.۰۵, and ۰.۰۲ have been considered.The simulation is performed under the framework of theOpenFOAM package. The main innovation in this workat the first is to present a correlation for the cavity lengthand diameter for hemispherical head form body.secondlly providing a detailed comparison of differentturbulence and mass transfer models over wide rangespecially in very low cavitation numbers such as σ=۰.۰۲in the first time. Our numerical results are compared withthe experimental data and suitable accuracy wasobserved.

کلیدواژه ها:

hemispherical head ، LES ، supercavitation ، re-entrant jet ، OpenFOAM