Numerical studies on natural ventilation flow in an enclosure with both buoyancy and wind effects

Ji, Y ORCID: https://orcid.org/0000-0003-3003-5071 2004, Numerical studies on natural ventilation flow in an enclosure with both buoyancy and wind effects , in: The 2004 CIBSE National Conference: Delivering Sustainable Construction, 29th–30th September 2004, London, UK.

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Abstract

Computational Fluid Dynamics (CFD) is used to predict natural ventilation flows in an enclosure with upper and lower openings connected to the environment. The natural driving forces are wind combined with buoyancy. CFD simulations were carried out by varying the strengths of buoyancy under a constant assisting wind effect. Simulation results of the volume flow rates through the enclosure, the stratification level and temperature distribution were compared with the corresponding experimental measurements and analytical studies by Hunt & Kaye (2001) and [2]. With the application of the RNG k-epsilon turbulence model and the proper considerations on the fluid boundaries, the overall computed airflow patterns and the airflow rates through the space agreed well with Hunt & Kaye (2001) and Hunt & Linden (2001). The close qualitative and quantitative agreement gave confidence in CFD technique for modelling natural ventilation flows in simple geometry buildings.

Item Type:	Conference or Workshop Item (Paper)
Themes:	Built and Human Environment
Schools:	Schools > School of the Built Environment Schools > School of the Built Environment > Centre for Urban Processes, Resilient Infrastructures & Sustainable Environments
Journal or Publication Title:	The 2004 CIBSE National Conference: Delivering Sustainable Construction
Refereed:	Yes
Depositing User:	Dr Yingchun Ji
Date Deposited:	01 Jun 2011 09:54
Last Modified:	10 Mar 2019 18:03
URI:	http://usir.salford.ac.uk/id/eprint/15869

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