(156c) Influence On Ambient Air Flow Due to Helical Straking On a Chemical Plant Stack
AIChE Spring Meeting and Global Congress on Process Safety
2010
2010 Spring Meeting & 6th Global Congress on Process Safety
Environmental Division
Air Compliance Issues In the Chemical and Refining Industries
Thursday, March 25, 2010 - 9:20am to 9:45am
Helical straking is added to exhaust stacks to mitigate harmonic oscillations in conjunction with vortex shedding. A secondary aspect appears in the destabilization of airflow in its wake which may promote dispersion. This paper will examine the influence of straking on the airflow around a stack. These results will be used to infer the impact of straking on stack effluents. This will be accomplished via 3 dimensional computer fluid dynamic modeling.
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