Lagrangian stochastic model for buoyant gas dispersion in a simple geometric chamber

Title
Lagrangian stochastic model for buoyant gas dispersion in a simple geometric chamber
Authors
김병구김종수이창훈
Keywords
Lagrangian stochastic model; turbulent buoyant dispersion; accidental hydrogen release
Issue Date
2009-11
Publisher
Journal of loss prevention in the process industries
Citation
VOL 22, NO 6, 995-1002
Abstract
A new Lagrangian stochastic model is proposed to predict dispersion of buoyant gases, such as hydrogen, by including the buoyant forcing term in the stochastic model and by considering the wall-plume interaction based on the hydrostatic approximation. The proposed model was validated by carrying out simulations for three accidental hydrogen release scenarios. The simulation for the case of instantaneous release exhibits a realistic spreading of the hydrogen puff in the vicinity of the horizontal ceiling, caused by the hydrostatic pressure. The predicted variation of concentration for the cases of continuous release shows good agreement with other simulation and experimental results.
URI
http://pubs.kist.re.kr/handle/201004/36581
ISSN
0950-4230
Appears in Collections:
KIST Publication > Article
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