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Numerical investigation of sheet cavitation over a 3-D venturi configuration

Communication avec acte
Author
GOUIN, Camille
134975 Laboratoire de Dynamique des Fluides [DynFluid]
ccJUNQUEIRA JUNIOR, Carlos
134975 Laboratoire de Dynamique des Fluides [DynFluid]
ccGONCALVES, Eric
118112 Institut Pprime [UPR 3346] [PPrime [Poitiers]]
ccROBINET, Jean-Christophe
134975 Laboratoire de Dynamique des Fluides [DynFluid]

URI
http://hdl.handle.net/10985/23682
Date
2021-05

Abstract

Sheet cavitation appears in many hydraulic applications and can lead to technical issues. Numerical simulation is a pertinent way to study the phenomenon. A numerical tool based on 1-fluid compressible RANS equations with a cavitation model is used to compute a flow within a 3-D venturi geometry with a 4° divergent angle. In the present work, a detailed study of this cavitating flow, which presents a quasi-stable vapour pocket, is carried out using tools such as Power Spectral Densities or Spectral Proper Orthogonal Decompositions. An oblique oscillation of the cavity is then identified and discussed.

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