HySafe SBEP-V20: Numerical studies of release experiments inside a naturally ventilated residential garage

Papanikolaou, EA; Venetsanos, AG; Heitsch, M; Baraldi, D; Huser, A; Pujol, J; Garcia, J; Markatos, N

dc.contributor.author	Papanikolaou, EA	en
dc.contributor.author	Venetsanos, AG	en
dc.contributor.author	Heitsch, M	en
dc.contributor.author	Baraldi, D	en
dc.contributor.author	Huser, A	en
dc.contributor.author	Pujol, J	en
dc.contributor.author	Garcia, J	en
dc.contributor.author	Markatos, N	en
dc.date.accessioned	2014-03-01T01:33:37Z
dc.date.available	2014-03-01T01:33:37Z
dc.date.issued	2010	en
dc.identifier.issn	0360-3199	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20491
dc.subject	CFD	en
dc.subject	Experiments	en
dc.subject	Garage	en
dc.subject	Hydrogen safety	en
dc.subject	Natural ventilation	en
dc.subject	Release and dispersion simulations	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Environmental Sciences	en
dc.subject.classification	Physics, Atomic, Molecular & Chemical	en
dc.subject.other	ADREA-HF	en
dc.subject.other	Bench-mark problems	en
dc.subject.other	Comparative assessment	en
dc.subject.other	Dispersion simulations	en
dc.subject.other	European Commission	en
dc.subject.other	Experimental investigations	en
dc.subject.other	Experimental measurements	en
dc.subject.other	Fuel cell vehicles	en
dc.subject.other	Hydrogen safety	en
dc.subject.other	Hydrogen-fuelled	en
dc.subject.other	Leak rate	en
dc.subject.other	Natural ventilation	en
dc.subject.other	Numerical approaches	en
dc.subject.other	Numerical investigations	en
dc.subject.other	Numerical studies	en
dc.subject.other	Peak power	en
dc.subject.other	Re numbers	en
dc.subject.other	Release experiments	en
dc.subject.other	Sensor location	en
dc.subject.other	User practices	en
dc.subject.other	Work packages	en
dc.subject.other	Benchmarking	en
dc.subject.other	Buildings	en
dc.subject.other	Combustors	en
dc.subject.other	Computational fluid dynamics	en
dc.subject.other	Dispersions	en
dc.subject.other	Doors	en
dc.subject.other	Fuel cells	en
dc.subject.other	Garages (parking)	en
dc.subject.other	Helium	en
dc.subject.other	Hydrogen	en
dc.subject.other	Vents	en
dc.subject.other	Experiments	en
dc.title	HySafe SBEP-V20: Numerical studies of release experiments inside a naturally ventilated residential garage	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.ijhydene.2010.02.020	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ijhydene.2010.02.020	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	This work presents the results of the Standard Benchmark Exercise Problem (SBEP) V20 of Work Package 6 (WP6) of HySafe Network of Excellence (NoE), co-funded by the European Commission, in the frame of evaluating the quality and suitability of codes, models and user practices by comparative assessments of code results. The benchmark problem SBEP-V20 covers release scenarios that were experimentally investigated in the past using helium as a substitute to hydrogen. The aim of the experimental investigations was to determine the ventilation requirements for parking hydrogen fuelled vehicles in residential garages. Helium was released under the vehicle for 2 h with 7.200 l/h flow rate. The leak rate corresponded to a 20% drop of the peak power of a 50 kW fuel cell vehicle. Three double vent garage door geometries are considered in this numerical investigation. In each case the vents are located at the top and bottom of the garage door. The vents vary only in height. In the first case, the height of the vents is 0.063 m, in the second 0.241 m and in the third 0.495 m. Four HySafe partners participated in this benchmark. The following CFD packages with the respective models were applied to simulate the experiments: ADREA-HF using k-epsilon model by partner NCSRD, FLACS using k-epsilon model by partner DNV, FLUENT using k-epsilon model by partner UPM and CFX using laminar and the low-Re number SST model by partner JAC. This study compares the results predicted by the partners to the experimental measurements at four sensor locations inside the garage with an attempt to assess and validate the performance of the different numerical approaches. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Hydrogen Energy	en
dc.identifier.doi	10.1016/j.ijhydene.2010.02.020	en
dc.identifier.isi	ISI:000278418700031	en
dc.identifier.volume	35	en
dc.identifier.issue	10	en
dc.identifier.spage	4747	en
dc.identifier.epage	4757	en