Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/66713
Title: Numerical simulation of airflow around a variable volume/constant face velocity fume cupboard
Authors: Ngiam Soon Lan
Viswanathan, S. 
Keywords: Containment control
Flow visualization
Fume hoods
Industrial hygiene
Mathematical simulation
Numerical predictions
Issue Date: 2001
Source: Ngiam Soon Lan,Viswanathan, S. (2001). Numerical simulation of airflow around a variable volume/constant face velocity fume cupboard. American Industrial Hygiene Association Journal 62 (3) : 303-312. ScholarBank@NUS Repository.
Abstract: Three-dimensional models of a variable volume/constant face velocity fume hood were developed and numerically solved to study the effect of the sash opening and rated face velocity on the flow patterns, especially in the exposure area of a person standing in front of the fume hood. These flow details are important in assessing the containment performance of the fume hood. For this study, fully turbulent flow was assumed to enter through the front hood window and exit through the exhaust duct. The finite-difference, control-volume technique, and standard κ-ε models were employed and solved together with the equations for the conservation of mass and momentum using FLUENT/UNS version 4.2 to obtain the flow solutions. Unobstructed flow cases, as well as the simplified two-dimensional scenarios, also were investigated for comparison. Results indicated that there is no occurrence of recirculation leading to concentration buildup within the region between the person and fume hood entrance Also, in conformance with other studies, the recirculating flow volume inside the hood decreased with increasing sash openings.
Source Title: American Industrial Hygiene Association Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/66713
ISSN: 15298663
Appears in Collections:Staff Publications

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