Simulation and analysis of ventilation flow through a room caused by a two-sided windcatcher using a LES method

Niktash, A; Huynh, BP

Simulation and analysis of ventilation flow through a room caused by a two-sided windcatcher using a LES method

Niktash, A Huynh, BP

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Publication Type:: Conference Proceeding
Citation:: Lecture Notes in Engineering and Computer Science, 2014, 2 pp. 1294 - 1297
Issue Date:: 2014-01-01

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Field	Value	Language
dc.contributor.author	Niktash, A	en_US
dc.contributor.author	Huynh, BP https://orcid.org/0000-0002-8786-8472	en_US
dc.date.issued	2014-01-01	en_US
dc.identifier.citation	Lecture Notes in Engineering and Computer Science, 2014, 2 pp. 1294 - 1297	en_US
dc.identifier.isbn	9789881925350	en_US
dc.identifier.issn	2078-0958	en_US
dc.identifier.uri	http://hdl.handle.net/10453/32657
dc.identifier.uri	http://hdl.handle.net/10453/33459
dc.identifier.uri	http://hdl.handle.net/10453/33458
dc.description.abstract	A windcatcher is a structure fitted on the roof of a building for providing natural ventilation using wind power; it exhausts the inside stale air to the outside and supplies the outside fresh air into the building interior space working by pressure difference between outside and inside of the building and using two fundamental natural ventilation principles; namely the stacks effects and the wind driven ventilation. In this paper, air flow through a three-dimensional room fitted with a two-sided windcatcher is observed numerically, using a commercial computational fluid dynamics (CFD) software package. In this simulation, the optimized model in RANS (Reynolds Averaged Navier-Stokes) method and the standard two- equation K-ε turbulence model has been simulated by using LES (Large Eddy Simulation) CFD technique which is more accurate than RANS method and the results have been analyzed and compared with the obtained results from RANS technique for the optimized model among other models with various windcatcher's bottom shapes, various windcatcher's positions, various inlet velocities, and various windcatcher's bottom lengths. The achieved results from LES method verify that the two-canal centred position windcatcher with the bottom length of 10 cm provides full circulation for most part of the room and large region of stable velocity in the acceptable range of indoor air speed for human comfort.	en_US
dc.relation.ispartof	Lecture Notes in Engineering and Computer Science	en_US
dc.title	Simulation and analysis of ventilation flow through a room caused by a two-sided windcatcher using a LES method	en_US
dc.type	Conference Proceeding
utslib.citation.volume	2	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
dc.location.activity	Imperial College London, London, U.K.
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	2	en_US

Abstract:

A windcatcher is a structure fitted on the roof of a building for providing natural ventilation using wind power; it exhausts the inside stale air to the outside and supplies the outside fresh air into the building interior space working by pressure difference between outside and inside of the building and using two fundamental natural ventilation principles; namely the stacks effects and the wind driven ventilation. In this paper, air flow through a three-dimensional room fitted with a two-sided windcatcher is observed numerically, using a commercial computational fluid dynamics (CFD) software package. In this simulation, the optimized model in RANS (Reynolds Averaged Navier-Stokes) method and the standard two- equation K-ε turbulence model has been simulated by using LES (Large Eddy Simulation) CFD technique which is more accurate than RANS method and the results have been analyzed and compared with the obtained results from RANS technique for the optimized model among other models with various windcatcher's bottom shapes, various windcatcher's positions, various inlet velocities, and various windcatcher's bottom lengths. The achieved results from LES method verify that the two-canal centred position windcatcher with the bottom length of 10 cm provides full circulation for most part of the room and large region of stable velocity in the acceptable range of indoor air speed for human comfort.

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http://hdl.handle.net/10453/32657