Experimental and Theoretical Studies in Heavy Gas Dispersion. Part II. Theory
Abstract
The motion and dilution of heavy gas clouds are studied on the basis of the thin-layer equations. The exact similarity solutions already developed by the authors for the case of instantaneous releases in the absence of wind with and without entrainment, are used herein to obtain solutions for heavy clouds and plumes moving with the wind from instantaneous and quasi-steady sources. Certain adjustments to correct for the nonsimilar initial conditions are proposed, and it is demonstrated that similarity prevails shortly after release also for “box-model” type starting conditions. The solution obtained provide all variables of interest (velocity, density, concentration) as function of space and time, and they are not limited to small density differences.
Keywords
Entrainment Rate Drift Speed Exact Numerical Result Frontal Height Heavy CloudPreview
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