Kim, Byung-Gu Kim, Jong Soo Lee, Changhoon 2024-01-20T20:31:07Z 2024-01-20T20:31:07Z 2021-09-05 2009-11 0950-4230 https://pubs.kist.re.kr/handle/201004/131986 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. (C) 2008 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD TURBULENT FLOWS HYDROGEN Lagrangian stochastic model for buoyant gas dispersion in a simple geometric chamber Article 10.1016/j.jlp.2008.11.007 1 JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, v.22, no.6, pp.995 - 1002 JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES 22 6 995 1002 scie scopus 000274354300053 2-s2.0-71649109986 Engineering, Chemical Engineering Article; Proceedings Paper TURBULENT FLOWS HYDROGEN Lagrangian stochastic model Turbulent buoyant dispersion Accidental hydrogen release