CFD modelling of buoyancy-driven natural ventilation opposed by wind

Cook, M; Ji, Y; Hunt, G

Abstract

This paper presents CFD simulations of natural displacement ventilation airflows in which the buoyancy force produced by a heat source is opposed by a wind force. Cases investigated focus on windbuoyancy force relationships for which a two-layer stratification is maintained. CFD predictions of the position of the interface separating the two layers and the change in reduced gravity (temperature
difference) between them are compared with the analytical work and salt-bath measurements of Hunt and Linden (2000, 2005). Comparisons are good with only minor discrepancies in the interface position and a small under-prediction of the upper layer reduced gravity.

Citation

Cook, M., Ji, Y., & Hunt, G. (2005, August). CFD modelling of buoyancy-driven natural ventilation opposed by wind. Presented at The 9th International IBPSA Conference, Montreal, Canada

• Presentation Conference Type: Other
• Conference Name: The 9th International IBPSA Conference
• Conference Location: Montreal, Canada
• Start Date: Aug 15, 2005
• End Date: Aug 18, 2005
• Publication Date: Jan 1, 2005
• Deposit Date: May 27, 2011
• Publicly Available Date: Apr 5, 2016
• Publisher URL: http://ibpsa.ca/bs2005/home.htm
• Additional Information: Event Type : Conference