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Wind flow over sinusoidal hilly obstacles located in a uniform flow

Wind flow over sinusoidal hilly obstacles located in a uniform flow
Wind flow over sinusoidal hilly obstacles located in a uniform flow
The wind flow over two-dimensional sinusoidal hilly obstacles with slope (the ratio of height to half width) of 0.5 has been investigated experimentally and numerically. Experiments for single and double sinusoidal hill models were carried out in a subsonic wind tunnel. The mean velocity profiles, turbulence statistics, and surface pressure distributions were measured at the Reynolds number based on the obstacle height(h=40 mm) of 2.6 104. The reattachment points behind the obstacles were determined using the oil-ink dot and tuft methods. The smoke-wire method was employed to visualize the flow structure qualitatively. The finite-volume-method and the SIMPLE-C algorithm with an orthogonal body-fitted grid were used for numerical simulation. Comparison of mean velocity profiles between the experiments and the numerical simulation shows a good agreement except for the separation region, however, the surface pressure data show almost similar distributions.
hilly obstacle, numerical simulation, single hill, double hill, turbulence model, flow visualization.
515-526
Lee, Sang-Joon
1e90563f-653e-40aa-8c35-d6ed0ccbbef5
Lim, Hee-Chang
2de5166a-cd5a-40c7-a808-630bf0e3b96b
Park, Ki-Chul
1f97d4fa-2047-4f6e-bdef-7a69da802c22
Lee, Sang-Joon
1e90563f-653e-40aa-8c35-d6ed0ccbbef5
Lim, Hee-Chang
2de5166a-cd5a-40c7-a808-630bf0e3b96b
Park, Ki-Chul
1f97d4fa-2047-4f6e-bdef-7a69da802c22

Lee, Sang-Joon, Lim, Hee-Chang and Park, Ki-Chul (2002) Wind flow over sinusoidal hilly obstacles located in a uniform flow. Wind and Structures: An International Journal, 5 (6), 515-526.

Record type: Article

Abstract

The wind flow over two-dimensional sinusoidal hilly obstacles with slope (the ratio of height to half width) of 0.5 has been investigated experimentally and numerically. Experiments for single and double sinusoidal hill models were carried out in a subsonic wind tunnel. The mean velocity profiles, turbulence statistics, and surface pressure distributions were measured at the Reynolds number based on the obstacle height(h=40 mm) of 2.6 104. The reattachment points behind the obstacles were determined using the oil-ink dot and tuft methods. The smoke-wire method was employed to visualize the flow structure qualitatively. The finite-volume-method and the SIMPLE-C algorithm with an orthogonal body-fitted grid were used for numerical simulation. Comparison of mean velocity profiles between the experiments and the numerical simulation shows a good agreement except for the separation region, however, the surface pressure data show almost similar distributions.

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More information

Published date: 2002
Keywords: hilly obstacle, numerical simulation, single hill, double hill, turbulence model, flow visualization.

Identifiers

Local EPrints ID: 23492
URI: http://eprints.soton.ac.uk/id/eprint/23492
PURE UUID: 451dc3b1-e731-4d75-b6d4-24a8e95fdfe7

Catalogue record

Date deposited: 28 Mar 2006
Last modified: 15 Jul 2019 19:20

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Contributors

Author: Sang-Joon Lee
Author: Hee-Chang Lim
Author: Ki-Chul Park

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