Numerical investigation of three-dimensional partial cavitation in a Venturi geometry
Abstract
Sheet cavitation appears in many hydraulic applicationss and can lead to technical issues. Some fundamental outcomes such as the complex topology of 3-Dimensional cavitation pockets and their associated dynamics need to be carefully visited.In the present paper, the dynamics of partial cavitation developing in a 3-D Venturi geometry and the interaction with sidewalls are numerically investigated. The simulations are performed usinf a one-fluid compressible Reynolds-Averaged Navier-Stokes (RANS solver associated to a non-linear turbulence model and a void transport-equation model. A detailed analysis of this cavitating flow is carried out using innovative tools such as Spectral Proper Orthogonal Decompositions. Particular attenttion is paid in the study of 3-D effects by comparing numerical results obtained with sidewalls and periodic conditions. A three-dimensional dynamics of the sheet cavitation, unrelated to the presence of sidewalls, is identified and discussed.
Keywords
Cite
@article{arxiv.2105.14858,
title = {Numerical investigation of three-dimensional partial cavitation in a Venturi geometry},
author = {Camille Gouin and Carlos Junqueira-Junior and Eric Goncalves da Silva and Jean-Christophe Robinet},
journal= {arXiv preprint arXiv:2105.14858},
year = {2021}
}