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Airflow pattern around a worker in a uniform freestream.

T Kim·M R Flynn
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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 visualization 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 visualization videos.

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HumansModels, BiologicalOccupational HealthRheologyVentilationJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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T Kim, M R Flynn. 1991. Airflow pattern around a worker in a uniform freestream.. https://doi.org/10.1080/15298669191364749

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