| Document ID (ISN) | 100402 |
| CIS number |
02-1347 |
| ISSN - Serial title |
0002-8894 - American Industrial Hygiene Association Journal |
| Year |
2002 |
| Convention or series no. |
|
| Author(s) |
Feigley C.E., Bennett J.S., Khan J., Lee E. |
| Title |
Performance of deterministic workplace exposure assessment models for various containment source, air inlet, and exhaust locations |
| Bibliographic information |
July-Aug. 2002, Vol.63, No.4, p.402-412. Illus. 25 ref. |
| Abstract |
Contaminant concentration estimates from simple models were compared with concentration fields obtained by computational fluid dynamic (CFD) simulations for various room and source configurations under steady-state conditions. For a high wall jet inlet, simulations were performed for nine room air exhaust locations and eight source locations. For a ceiling diffuser inlet the impact of two exhaust locations and eight source locations were investigated. Parameters of the one- and two-zone completely mixed models (CM-1 and CM-2) and the uniform turbulent diffusivity model (UD) were determined from CFD simulation results. The CM-1 model had generally the best performance for applications such as occupational epidemiology for the conditions and configurations studied. However, CM-1 tended to underestimate the near field concentration; thus, CM-2 was judged to be better in the near field when underestimation is undesirable, such as when determining compliance with occupational exposure limits. The UD model performed poorly on average in both near and far fields. |
| Descriptors (primary) |
exhaust ventilation; exposure evaluation; ventilation design |
| Descriptors (secondary) |
air movement; fluid mechanics; mathematical simulation; premises |
| Document type |
D - Periodical articles |
| Country / State or Province | USA |
| Subject(s) |
Toxic and dangerous substances
|
| Broad subject area(s) |
Chemical safety
|
| Browse category(ies) |
Ventilation
Exposure evaluation
|
