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Numerical analysis of ventilated cavity flow over a 2-D wall mounted fence

journal contribution
posted on 2023-05-19, 06:10 authored by Luka BarbacaLuka Barbaca, Bryce PearceBryce Pearce, Paul BrandnerPaul Brandner
Ventilated cavity flow over a 2-D wall mounted fence is numerically investigated using a viscous approach. An implicit unsteady compressible solver was used with a RANS k−ω SST turbulence model and VOF approach to capture the cavity interface. The simulations were carried out for a fixed fence height based Froude number and constant outlet pressure. Cavity topology, wall pressure distributions and the resulting hydrodynamic forces were determined as a function of ventilation rate, degree of fence immersion in the oncoming wall boundary layer and degree of confinement of the flow domain. It was found that with an increase in ventilation rate, lift increases and drag decreases resulting in a greater hydrodynamic efficiency (lift to drag ratio) of the fence-wall system. With increase in immersion of the fence in the boundary layer, both lift and drag decreased, while the lift to drag ratio increased. Variation in the degree of confinement had a large influence on the flow, with the reduction in lift and hydrodynamic efficiency observed for the more confined conditions.

History

Publication title

Ocean Engineering

Volume

141

Pagination

143-153

ISSN

0029-8018

Department/School

Australian Maritime College

Publisher

Pergamon-Elsevier Science Ltd

Place of publication

United Kingdom

Rights statement

Copyright 2017 Elsevier Ltd.

Repository Status

  • Restricted

Socio-economic Objectives

Nautical equipment

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