RESEARCH ARTICLE
Interaction Between Wind and Buoyancy Effects in Natural Ventilation of Buildings
Guohui Gan
Article Information
Identifiers and Pagination:
Year: 2010Volume: 4
First Page: 134
Last Page: 145
Publisher ID: TOBCTJ-4-134
DOI: 10.2174/1874836801004010134
Article History:
Received Date: 20/04/2008Revision Received Date: 11/05/2009
Acceptance Date: 14/05/2009
Electronic publication date: 11/11/2010
Collection year: 2010
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Design of natural ventilation systems for many types of building is based on buoyancy force. However, external wind flow can have significant effects on buoyancy-driven natural ventilation. Simulation has been carried out for combined wind- and buoyancy-driven natural ventilation of a building with two wings of offices and a central atrium. Results show that wind would adversely affect the air flow patterns in the building designed with buoyancy-driven natural ventilation. Wind can simultaneously assist and oppose buoyancy in the windward and leeward wings, respectively, whereas buoyancy can oppose wind-driven flow in both wings. To achieve or maintain a desired environmental quality in the naturally ventilated building would require intelligent control of ventilation openings and/or careful consideration of winddriven ventilation at the design stage. The importance of measurements of variables such as pressure, velocity and temperature for real size buildings is also highlighted.