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Shallow layer simulation of heavy gas released on a slope in a calm ambient Part II. Instantaneous releases

Shallow layer simulation of heavy gas released on a slope in a calm ambient Part II. Instantaneous releases
Shallow layer simulation of heavy gas released on a slope in a calm ambient Part II. Instantaneous releases
This paper assesses the value of shallow layer modelling for instantaneous releases of heavy gas over a slope using the established computer model TWODEE [R.K.S. Hankin, Heavy gas dispersion over complex terrain, Ph.D. thesis, Cambridge University, 1997; J. Hazard. Mater. 66 (1999) 211; J. Hazard. Mater. 66 (1999) 227; J. Hazard. Mater. 66 (1999) 239] and the experimental results of Schatzmann et al. [M. Schatzmann, K. Marotzke, J. Donat, Research on continuous and instantaneous heavy gas clouds, Contribution of sub-project EV 4T-0021-D to the final report of the joint CEC project, Technical report, Meteorological Institute, University of Hamburg, February 1991].
This is the second of a two-part paper; part I considered continuous releases using the same model, using the same entrainment parameters. Schatzmann et al. carried out instantaneous releases of heavy gas over three slopes; each experiment was repeated five times under nominally identical conditions.
The goodness-of-fit measures (GFMs) of Hanna et al. [Atmos. Environ. 27A (15) (1993) 2265] are generalized to account for the multiple releases carried out by Schatzmann et al. Using these statistical GFMs, predicted peak concentrations are generally correct to within a factor of two; and cloud arrival times are generally late
Heavy gas dispersion, Instantaneous releases, Shallow layer modelling, Risk assessment, Slopes
0304-3894
217-229
Hankin, R.K.S.
296864a6-e423-44b6-ad0e-25422c913540
Hankin, R.K.S.
296864a6-e423-44b6-ad0e-25422c913540

Hankin, R.K.S. (2003) Shallow layer simulation of heavy gas released on a slope in a calm ambient Part II. Instantaneous releases. Journal of Hazardous Materials, 103 (3), 217-229. (doi:10.1016/S0304-3894(03)00225-5).

Record type: Article

Abstract

This paper assesses the value of shallow layer modelling for instantaneous releases of heavy gas over a slope using the established computer model TWODEE [R.K.S. Hankin, Heavy gas dispersion over complex terrain, Ph.D. thesis, Cambridge University, 1997; J. Hazard. Mater. 66 (1999) 211; J. Hazard. Mater. 66 (1999) 227; J. Hazard. Mater. 66 (1999) 239] and the experimental results of Schatzmann et al. [M. Schatzmann, K. Marotzke, J. Donat, Research on continuous and instantaneous heavy gas clouds, Contribution of sub-project EV 4T-0021-D to the final report of the joint CEC project, Technical report, Meteorological Institute, University of Hamburg, February 1991].
This is the second of a two-part paper; part I considered continuous releases using the same model, using the same entrainment parameters. Schatzmann et al. carried out instantaneous releases of heavy gas over three slopes; each experiment was repeated five times under nominally identical conditions.
The goodness-of-fit measures (GFMs) of Hanna et al. [Atmos. Environ. 27A (15) (1993) 2265] are generalized to account for the multiple releases carried out by Schatzmann et al. Using these statistical GFMs, predicted peak concentrations are generally correct to within a factor of two; and cloud arrival times are generally late

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More information

Published date: 31 October 2003
Keywords: Heavy gas dispersion, Instantaneous releases, Shallow layer modelling, Risk assessment, Slopes

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Local EPrints ID: 58517
URI: http://eprints.soton.ac.uk/id/eprint/58517
ISSN: 0304-3894
PURE UUID: 74586240-a32e-4437-b912-02a835d12edf

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Date deposited: 14 Aug 2008
Last modified: 15 Mar 2024 11:11

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Author: R.K.S. Hankin

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