| Document ID (ISN) | 59733 |
| CIS number |
93-550 |
| ISSN - Serial title |
0002-8894 - American Industrial Hygiene Association Journal |
| Year |
1991 |
| Convention or series no. |
|
| Author(s) |
Kim T., Flynn M.R. |
| Title |
Airflow pattern around a worker in a uniform freestream |
| Bibliographic information |
July 1991, Vol.52, No.7, p.287-296. 30 ref. |
| Abstract |
The effect of boundary layer separation on worker exposure is an important factor in the design of local exhaust ventilation. Three-dimensional airflow around a mannequin is examined by using flow visualisation techniques and hot-film anemometry. Above the chest, a downwash effect is noted; from the chest to the elbows, a combination of downwash and vortex shedding is observed; and from the waist to the hip, vortex shedding appears to be dominant. A coherent vertical flow structure is observed close to the body. Vortex shedding frequency is determined by using hot-film anemometry. The dimensions of the reverse flow region and the area of the vortices are estimated from flow visualisation videos. |
| Descriptors (primary) |
local exhaust; airflow measurement; mechanical ventilation; wind tunnels |
| Descriptors (secondary) |
literature survey; mathematical models; test laboratories |
| Document type |
D - Periodical articles |
| Country / State or Province | USA |
| Subject(s) |
Heating, ventilation and climate
|
| Broad subject area(s) |
Chemical safety
|
| Browse category(ies) |
Ventilation
Compressed gases and pressure vessels
|
