A numerical formulation for cavitating flows around marine propellers based on variational multiscale method

A numerical approach for modelling cavitating flows over moving hydrodynamic surfaces is presented. The operating fluid is modelled as an isothermal homogeneous mixture of water vapor and liquid phases. The flow field is governed by the Navier–Stokes equations along with a transport equation for the...

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Bibliographic Details
Published in:Computational mechanics 2021-08, Vol.68 (2), p.405-432
Main Authors: Bayram, A., Korobenko, A.
Format: Article
Language:English
Subjects:
Boundary conditions
Cavitation
Classical and Continuum Physics
Computational fluid dynamics
Computational Science and Engineering
Engineering
Flow simulation
Fluid flow
Forebodies
Geometry
Homogeneous mixtures
Investigations
Liquid phases
Marine machinery
Mathematical models
Methods
Multiscale analysis
Original Paper
Propellers
Simulation
Theoretical and Applied Mechanics
Three dimensional flow
Transport equations
Turbulence
Turbulence models
Vortices
Water vapor
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Description
Summary:A numerical approach for modelling cavitating flows over moving hydrodynamic surfaces is presented. The operating fluid is modelled as an isothermal homogeneous mixture of water vapor and liquid phases. The flow field is governed by the Navier–Stokes equations along with a transport equation for the vapor volume fraction. The Arbitrary Lagrangian-Eulerian description of the continuum is adopted to handle fluid flow simulations on moving domains. The residual based variational multiscale method is used to model the turbulent flow together with wall modelling implemented by the weak imposition of the no-slip boundary condition. Merkle and Zwart cavitation models are implemented and compared. First, a cavitating flow over a 3D hemispherical fore-body is modeled to perform a detailed comparison between two models. Next, the cavitating flow over the INSEAN E779A marine propeller is modeled and results are compared to available experimental data showing good agreement.
ISSN:0178-7675
1432-0924
DOI:10.1007/s00466-021-02039-9