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CFD characterization of a mechanically ventilated office room :The effects of room design on ventilation performance.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	CFD characterization of a mechanically ventilated office room :
其他題名:	The effects of room design on ventilation performance.
作者:	Buchanan, Christopher Ross.
面頁冊數:	136 p.
附註:	Chair: Derek Dunn-Rankin.
附註:	Source: Dissertation Abstracts International, Volume: 58-08, Section: B, page: 4406.
Contained By:	Dissertation Abstracts International58-08B.
標題:	Engineering, Mechanical.
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9804793
ISBN:	0591546728

CFD characterization of a mechanically ventilated office room :The effects of room design on ventilation performance.
Buchanan, Christopher Ross.

CFD characterization of a mechanically ventilated office room :The effects of room design on ventilation performance.[electronic resource] - 136 p.

Chair: Derek Dunn-Rankin.

Thesis (Ph.D.)--University of California, Irvine, 1997.

Characteristics of the air flow and contaminant transport in a jet-ventilated office room are studied using CFD simulations. The main interest is the effect of room design on ventilation performance. In these simulations, both laminar and turbulent representations are used for the flow. The standard k-epsilon and RNG k-epsilon turbulence models are used in the turbulent simulations.

ISBN: 0591546728Subjects--Topical Terms:

212470
Engineering, Mechanical.

CFD characterization of a mechanically ventilated office room :The effects of room design on ventilation performance.
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245 1 0 $a CFD characterization of a mechanically ventilated office room : $b The effects of room design on ventilation performance. $h [electronic resource]
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500 $a Chair: Derek Dunn-Rankin.
500 $a Source: Dissertation Abstracts International, Volume: 58-08, Section: B, page: 4406.
502 $a Thesis (Ph.D.)--University of California, Irvine, 1997.
520 # $a Characteristics of the air flow and contaminant transport in a jet-ventilated office room are studied using CFD simulations. The main interest is the effect of room design on ventilation performance. In these simulations, both laminar and turbulent representations are used for the flow. The standard k-epsilon and RNG k-epsilon turbulence models are used in the turbulent simulations.
520 # $a Comparisons with experimental data show that simulations provide accurate predictions of the air flow and contaminant transport in the room under flow conditions typical for the environment. The laminar and RNG k-epsilon model results agree best with experimental data. The standard k-epsilon model greatly over-predicts the turbulent eddy viscosity, which results in errors in the flow field predictions. In general, turbulence levels are low and turbulence has little impact on the air flow and contaminant transport. Overall, the RNG k-epsilon model provides the best results, so it is suggested for simulations of indoor air flows.
520 # $a Convection is the dominant transport mechanism in the room, which means ventilation performance can be manipulated largely through flow field design. Objects in the room have an unpredictable effect on the air flow, so it is difficult to develop general guidelines concerning their placement for optimal ventilation performance. Each room design will require an individual assessment to some degree. Inlet conditions have a large impact on the air flow, contaminant transport, and ventilation performance. Inlet location and flow conditions are important design issues effecting the performance of the ventilation system. The diffuser inlet conditions provide much higher ventilation performance than grill inlet conditions. The outlet location has little effect on the flow, so its placement is not a crucial design issue.
520 # $a This work has three primary objectives: first, to determine if CFD techniques can be used to accurately simulate a realistic indoor environment, in particular, a three-dimensional room containing large flow obstructions; second, to use CFD to determine the effects of obstructions on the room ventilation performance; third, to improve the ventilation performance through room design.
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791 $a Ph.D.
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