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Titolo:
Numerical simulation of airflow around a variable volume/constant face velocity fume cupboard
Autore:
Lan, NS; Viswanathan, S;
Indirizzi:
Natl Univ Singapore, Dept Environm Chem & Engn, Singapore 119260, Singapore Natl Univ Singapore Singapore Singapore 119260 ngapore 119260, Singapore
Titolo Testata:
AIHAJ
fascicolo: 3, volume: 62, anno: 2001,
pagine: 303 - 312
SICI:
1529-8663(200105/06)62:3<303:NSOAAA>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
AIR-FLOW;
Keywords:
containment control; flow visualization; fume hoods; industrial hygiene; mathematical simulation; numerical predictions;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Lan, NS Natl Univ Singapore, Dept Environm Chem & Engn, 10 Kent Ridge Crescent, Singapore 119260, Singapore Natl Univ Singapore 10 Kent Ridge Crescent Singapore Singapore 119260
Citazione:
N.S. Lan e S. Viswanathan, "Numerical simulation of airflow around a variable volume/constant face velocity fume cupboard", AIHAJ, 62(3), 2001, pp. 303-312

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 k-epsilon 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.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 06:41:08