A numerical study on flow around a triangular prism located behind a porous fence
A numerical study on flow around a triangular prism located behind a porous fence
The flow characteristics around a two-dimensional triangular-shaped prism located behind a porous wind fence were investigated numerically. The shelter effect of the porous wind fence on wind flow around the triangular prism model was studied by changing the porosity, height, and location of the wind fence. The numerical method developed for the present work is based on the finite volume method with the Quick scheme. The RNG k– turbulence model and orthogonal grid were used and they are found to be stable in terms of numerical convergence for predicting the separated shear flow. The validity of the numerical method developed in the present work has been evaluated by comparing the numerical results with the experimental data. As a result, the numerical predictions show good agreements with the experimental results. The wind fence with a porosity of about 0.3–0.5 seems to be most effective in attenuating the mean pressure around the prism model acting on the prism surface and turbulent kinetic energy.
porous fence, surface pressure, rng k-?, turbulence model, triangular prism
209-221
Lee, Sang-Joon
1e90563f-653e-40aa-8c35-d6ed0ccbbef5
Lim, Hee-Chang
2de5166a-cd5a-40c7-a808-630bf0e3b96b
2001
Lee, Sang-Joon
1e90563f-653e-40aa-8c35-d6ed0ccbbef5
Lim, Hee-Chang
2de5166a-cd5a-40c7-a808-630bf0e3b96b
Lee, Sang-Joon and Lim, Hee-Chang
(2001)
A numerical study on flow around a triangular prism located behind a porous fence.
Fluid Dynamics Research, 28 (3), .
(doi:10.1016/S0169-5983(00)00030-7).
Abstract
The flow characteristics around a two-dimensional triangular-shaped prism located behind a porous wind fence were investigated numerically. The shelter effect of the porous wind fence on wind flow around the triangular prism model was studied by changing the porosity, height, and location of the wind fence. The numerical method developed for the present work is based on the finite volume method with the Quick scheme. The RNG k– turbulence model and orthogonal grid were used and they are found to be stable in terms of numerical convergence for predicting the separated shear flow. The validity of the numerical method developed in the present work has been evaluated by comparing the numerical results with the experimental data. As a result, the numerical predictions show good agreements with the experimental results. The wind fence with a porosity of about 0.3–0.5 seems to be most effective in attenuating the mean pressure around the prism model acting on the prism surface and turbulent kinetic energy.
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Published date: 2001
Keywords:
porous fence, surface pressure, rng k-?, turbulence model, triangular prism
Identifiers
Local EPrints ID: 23491
URI: http://eprints.soton.ac.uk/id/eprint/23491
ISSN: 0169-5983
PURE UUID: fa6d0a5b-4676-4027-8e0c-452573d2f228
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Date deposited: 24 Mar 2006
Last modified: 15 Mar 2024 06:47
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Author:
Sang-Joon Lee
Author:
Hee-Chang Lim
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