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Investigation of Air Drafting Pattern Obtained from the Variation in Outlet Positions inside a Closed Area

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Author(s): Brajesh Tripathi | S.G Moulic

Journal: Journal of Applied Fluid Mechanics
ISSN 1735-3572

Volume: 5;
Issue: 4;
Start page: 1;
Date: 2012;
Original page

Keywords: Airflow | Ceiling | Diffuser | CFD | Streamlines

ABSTRACT
The ceiling type diffusers were analyzed for the combinations of inlet streams on outlet locations including the variation of angles at inlet. A detailed analysis has been presented using plots of streamlines, isotherms, heat-lines and variation of the average Nusselt number with changes in buoyancy ratio. The results indicate that the location of outlet plays a significant role in the targeted occupied region and it can be used for different applications of ceiling diffusers. The predicted performance of fluid flow can be applied in different medical clean room applications. The airflow analysis indicates that for a single ceiling air diffuser, it is advantageous to adopt a variation in the inclination angle at inlet to achieve maximum air distribution profiles. The combinations of inlet and outlet position reduce the short-circuiting of supply air, providing additional uniform temperatures and room airflow in the occupied zone.
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