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Wind and Structures Volume 11, Number 1, January 2008 , pages 51-70 DOI: https://doi.org/10.12989/was.2008.11.1.051 |
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Pedestrian wind conditions at outdoor platforms in a high-rise apartment building: generic sub-configuration validation, wind comfort assessment and uncertainty issues |
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B. Blocken and J. Carmeliet
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| Abstract | ||
| CFD is applied to evaluate pedestrian wind comfort at outdoor platforms in a high-rise apartment building. Model validation is focused on generic building sub-configurations that are obtained by decomposition of the actual complex building geometry. The comfort study is performed during the design stage, which allows structural design changes to be made for wind comfort improvement. Preliminary simulations are performed to determine the effect of different design modifications. A full wind comfort assessment study is conducted for the final design. Structural remedial measures for this building, aimed at reducing pressure short-circuiting, appear to be successful in bringing the discomfort probability estimates down to acceptable levels. Finally, the importance of one of the main sources of uncertainty in this type of wind comfort studies is illustrated. It is shown that the uncertainty about the terrain roughness classification can strongly influence the outcome of wind comfort studies and can lead to wrong decisions. This problem is present to the same extent in both wind tunnel and CFD wind comfort studies when applying the same particular procedure for terrain relation contributions as used in this paper. | ||
| Key Words | ||
| numerical simulation; Computational Fluid Dynamics (CFD); pedestrian wind comfort; wind environment; wind nuisance; wind flow; building passage; validation; wind tunnel measurements; sand erosion. | ||
| Address | ||
| B. Blocken; Building Physics and Systems, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, the Netherlands J. Carmeliet; Building Physics and Systems, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, the Netherlands Laboratory of Building Physics, Katholieke Universiteit Leuven, Kasteelpark Arenberg 40, 3001 Leuven, Belgium | ||