Describing The Dispersion Of Pollutants Near
Buildings Under Low Wind-speeds: Real Scale And
Numerical Results
Author(s)
J.M. Martins & C. Borrego
Abstract
Worst meteorological conditions in case of industrial accidents are thermal
stability and low wind speeds. Low wind speed conditions (<~2 m.s"') are
observed up to 60% or more of the time in southern European countries and
these circumstances cannot therefore be neglected in studying accidental
dispersion conditions. Real scale trials were performed in southern France,
simulating releases near a L~40 x W~40 x H~20 m building. Due to low wind
speeds, conventional modeling largely overestimated ground level concentra-
tions near the centerline and produced a much narrower plume. Two adapted
models were applied to these situations: MPUF, a multi-puff Gaussian model
able for use in real-time and VADIS, a Lagrangian model; in this model pa
Keywords
Related Book
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