Generally, the evaluations of heavy gas models have consisted in checking the performance in predicting the plume centerline concentration at ground level and the width of the plume (see, for example, Hanna et al., 1991), but they have not considered the vertical distribution of dense gas. Experimental studies have shown that vertical distributions of gas inside a dense-than-air cloud is an important factor to describe the dispersion of the cloud impacting an obstacle. In this paper, the three-dimensional distributions of dense gas concentration have been computed from the outputs of the SLAB and HEGADAS models which were run for some field experiments of dense gas release in the atmosphere. The resultant distributions have been statistically compared.
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- Evaluation of the Three-Dimensional Distribution of Dense Gas Concentration Estimated by Numerical Models
- Springer US