CFD simulations of hydrogen deflagration in slow and fast combustion regime

Robert Cherbański , Eugeniusz Molga

Abstract

This paper presents CFD modelling of hydrogen-air deflagrations. The proposed mathematical models are validated with the experiments provided to SARNET2 (Severe Accident Research NETwork of Excellence 2) project [A. Bentaib, A. Bleyer, N. Chaumeix, B. Schramm, P. Kostka, M. Movahed, H.S. Kang and M. Povilaitis, Final results of the SARNET Hydrogen deflagration Benchmark Effect of turbulence on flame acceleration. (2012), pp. 1–15; A. Bentaib, A. Bleyer, N. Meynet, N. Chaumeix, B. Schramm, M. Höhne, P. Kostka, M. Movahed, S. Worapittayaporn, T. Brähler, H. Seok-Kang, M. Povilaitis, I. Kljenak and P. Sathiah, SARNET hydrogen deflagration benchmarks: Main outcomes and conclusions. Ann. Nucl. Energy 74 (2014), pp. 143–152. doi:10.1016/j.anucene.2014.07.012]. The goal of SARNET2 project was to investigate the effect of blockage ratio on flame propagation and pressure evolution during deflagration of a lean mixture of hydrogen and air. Three blockage ratios were tested: BR = 0, 0.33 and 0.63. The experiments were carried out in the ENACCEF facility. The proposed mathematical models test the effect of turbulence models and radiative heat losses on flame front position and absolute pressure in the testing facility. A good agreement between the calculated and experimental results for the three BRs is found for the SST k-ω model alone and in combination with the γ transition model when radiative heat losses are accounted for in the modelling. In addition, an unstable tulip flame is evidenced in our CFD simulations what corroborates previous reports on premixed combustion in a closed tube.
Author Robert Cherbański (FCPE / DPKT)
Robert Cherbański,,
- Department of Process Kinetics and Thermodynamics
, Eugeniusz Molga (FCPE / DPKT)
Eugeniusz Molga,,
- Department of Process Kinetics and Thermodynamics
Journal seriesCombustion Theory and Modelling, ISSN 1364-7830, e-ISSN 1741-3559
Issue year2020
Vol24
No4
Pages589-605
Publication size in sheets0.8
Keywords in EnglishCFD, hydrogen hazard, deflagration, ENACCEF, modelling
ASJC Classification1500 General Chemical Engineering; 1600 General Chemistry; 2102 Energy Engineering and Power Technology; 2103 Fuel Technology; 2611 Modelling and Simulation; 3100 General Physics and Astronomy
DOIDOI:10.1080/13647830.2020.1724336
URL https://www.tandfonline.com/doi/abs/10.1080/13647830.2020.1724336?needAccess=true#aHR0cHM6Ly93d3cudGFuZGZvbmxpbmUuY29tL2RvaS9wZGYvMTAuMTA4MC8xMzY0NzgzMC4yMDIwLjE3MjQzMzY/bmVlZEFjY2Vzcz10cnVlQEBAMA==
Project[DOB-BIO7/09/03/2015 POLON] Program do oceny ryzyka wystąpienia awarii w obiektach przemysłowych stwarzających zagrożenie poza swoim terenem. . Project leader: Cherbański Robert, , Phone: 22 234 63 74, application date 14-09-2015, start date 22-12-2015, planned end date 31-12-2018, Implemented
WIChiP Projects financed by NCRD [Projekty finansowane przez NCBiR (NCBR)]
Languageen angielski
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Cherbański R., Molga E. - CFD simulations of hydrogen...pdf 2.08 MB
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 07-08-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.928; WoS Impact Factor: 2018 = 1.654 (2) - 2018=1.839 (5)
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UwagiThis work was supported by The National Centre for Research and Development (Poland): [Grant Number DOB-BIO7/09/03/2015, funding amount 7 367 000 PLN].
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