Study of a Ventilated Prototype Structure
Gregory
Chawynski, Jamal Naser and Kerry McManus AM
Swinburne
University of Technology, School of Engineering and Science,
PO Box 218 Hawthorn, Victoria 3122, Australia.
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Abstract
Creating a computer model
that is able to simulate different ventilation
scenarios within a structure is essential for improving the understanding
of passive designs that are both sustainable and environmentally
acceptable. The purpose of this investigation was to build a prototype
model that could be heated from both the outside and inside to duplicate
an occupied structure during the morning hours. Two Computational Fluid
Dynamic (CFD) models were created for this study to firstly compare and
then validate results obtained from experimental data. This computer-based
component consisted of approximately 20% of the overall investigation. The
modelling program called FLUENT (version 6.0.12) was chosen. The geometry
was created using a computer program called GAMBIT (version 2.0.4). The
simulated outcome was made possible only after the analysis of
experimental results was implemented to establish part of the boundary
conditions. The findings enabled a better scientific understanding of how
a structure’s thermal performance can be improved by mechanically
forcing air (to simulate outside wind) inside to both lower and create an
overall more uniform internal air temperature distribution.
Key words: Computational
Fluid Dynamics, natural ventilation, test chamber, passive cooling.
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