CFD Modelling of Natural Ventilation: Combined Wind and Buoyancy Forces
| Autor: | Malcolm J. Cook, Gary R. Hunt, Yingchun Ji |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Buoyancy
CFD in buildings Meteorology Flow (psychology) 0211 other engineering and technologies Enclosure 02 engineering and technology Computational fluid dynamics engineering.material law.invention law 021105 building & construction 021108 energy Boundary value problem Electrical and Electronic Engineering UoA 30 Architecture and the Built Environment Civil and Structural Engineering business.industry RAE 2008 Natural ventilation Building and Construction Mechanics Control and Systems Engineering Ventilation (architecture) engineering business |
| Zdroj: | International Journal of Ventilation. 1:169-179 |
| ISSN: | 2044-4044 1473-3315 |
| DOI: | 10.1080/14733315.2003.11683632 |
| Popis: | Results of a CFD simulation of the wind-assisted stack ventilation of a single-storey enclosure with high and low-level ventilation openings are presented and compared with both the laboratory measurements and the analytical model of the flow and thermal stratification developed by Hunt and Linden (2001). Comparisons show that close quantitative agreement is obtained between the thermal stratification predicted by the CFD and the analytical model and experimental measurements. A key consideration in the CFD modelling work is how to specify appropriate boundary conditions at the inlet and outlet locations of the enclosure. This paper investigates the use of constant pressure boundary conditions imposed over an opening whose physical area has been reduced to account for the effects of discharge and expansion. The close agreement with the analytical predictions and experimental results gives confidence in this approach and offers guidance on how to model wind-assisted stack ventilation flows using CFD. |
| Databáze: | OpenAIRE |
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