The evolution and structure of ignited high-pressure cryogenic hydrogen jets

Ren, Zhaoxin; Giannissi, Stella; Venetsanos, A.G.; Friedrich, A.; Kuznetsov, Mike; Jordan, T.; Wen, Jennifer X.

doi:10.1016/j.ijhydene.2022.06.230

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The evolution and structure of ignited high-pressure cryogenic hydrogen jets

Zhaoxin Ren

, Stella Giannissi, A.G. Venetsanos, A. Friedrich, Mike Kuznetsov, T. Jordan, Jennifer X. Wen

International Journal of Hydrogen Energy, Volume: 47, Issue: 67, Pages: 29184 - 29194

Swansea University Author: Zhaoxin Ren

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DOI (Published version): 10.1016/j.ijhydene.2022.06.230

Abstract

The anticipated upscaling of hydrogen energy applications will involve the storage and transport of hydrogen at cryogenic conditions. Understanding the potential hazard arising from leaks in high-pressure cryogenic storage is needed to improve hydrogen safety. The manuscript reports a series of nume...

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Published in:	International Journal of Hydrogen Energy
ISSN:	0360-3199
Published:	Elsevier BV 2022
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa60417
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first_indexed	2022-07-12T15:43:25Z
last_indexed	2023-01-13T19:20:32Z
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spelling	2022-10-31T20:19:09.0691449 v2 60417 2022-07-08 The evolution and structure of ignited high-pressure cryogenic hydrogen jets 62a1a0da0fa78e05c3deafcdee5551ce 0000-0002-6305-9515 Zhaoxin Ren Zhaoxin Ren true false 2022-07-08 AERO The anticipated upscaling of hydrogen energy applications will involve the storage and transport of hydrogen at cryogenic conditions. Understanding the potential hazard arising from leaks in high-pressure cryogenic storage is needed to improve hydrogen safety. The manuscript reports a series of numerical simulations with detailed chemistry for the transient evolution of ignited high-pressure cryogenic hydrogen jets. The study aims to gain insight of the ignition processes, flame structures and dynamics associated with the transient flame evolution. Numerical simulations were firstly conducted for an unignited jet released under the same cryogenic temperature of 80 K and pressure of 200 bar as the considered ignited jets. The predicted hydrogen concentrations were found to be in good agreement with the experimental measurements. The results informed the subsequent simulations of the ignited jets involving four different ignition locations. The predicted time series snapshots of temperature, hydrogen mass fraction and the flame index are analyzed to study the transient evolution and structure of the flame. The results show that a diffusion combustion layer is developed along the outer boundary of the jet and a side diffusion flame is formed for the near-field ignition. For the far-field ignition, an envelope flame is observed. The flame structure contains a diffusion flame on the outer edge and a premixed flame inside the jet. Due to the complex interactions between turbulence, fuel-air mixing at cryogenic temperature and chemical reactions, localized spontaneous ignition and transient flame extinguishment are observed. The predictions also captured the experimentally observed deflagration waves in the far-field ignited jets. Journal Article International Journal of Hydrogen Energy 47 67 29184 29194 Elsevier BV 0360-3199 High-pressure cryogenic hydrogen, Large eddy simulation, Ignited hydrogen jet, Flame evolution and structure 31 8 2022 2022-08-31 10.1016/j.ijhydene.2022.06.230 http://dx.doi.org/10.1016/j.ijhydene.2022.06.230 COLLEGE NANME Aerospace Engineering COLLEGE CODE AERO Swansea University SU Library paid the OA fee (TA Institutional Deal) 2022-10-31T20:19:09.0691449 2022-07-08T12:25:59.9119127 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering Zhaoxin Ren 0000-0002-6305-9515 1 Stella Giannissi 2 A.G. Venetsanos 3 A. Friedrich 4 Mike Kuznetsov 5 T. Jordan 6 Jennifer X. Wen 7 60417__25325__359d650f49b248a59c886197b2888ce8.pdf 60417.VOR.pdf 2022-10-06T13:04:06.5494904 Output 4297550 application/pdf Version of Record true This is an open access article under the CC BY Attribution 4.0 license. true eng http://creativecommons.org/licenses/by/4.0/
title	The evolution and structure of ignited high-pressure cryogenic hydrogen jets
spellingShingle	The evolution and structure of ignited high-pressure cryogenic hydrogen jets Zhaoxin Ren
title_short	The evolution and structure of ignited high-pressure cryogenic hydrogen jets
title_full	The evolution and structure of ignited high-pressure cryogenic hydrogen jets
title_fullStr	The evolution and structure of ignited high-pressure cryogenic hydrogen jets
title_full_unstemmed	The evolution and structure of ignited high-pressure cryogenic hydrogen jets
title_sort	The evolution and structure of ignited high-pressure cryogenic hydrogen jets
author_id_str_mv	62a1a0da0fa78e05c3deafcdee5551ce
author_id_fullname_str_mv	62a1a0da0fa78e05c3deafcdee5551ce_***_Zhaoxin Ren
author	Zhaoxin Ren
author2	Zhaoxin Ren Stella Giannissi A.G. Venetsanos A. Friedrich Mike Kuznetsov T. Jordan Jennifer X. Wen
format	Journal article
container_title	International Journal of Hydrogen Energy
container_volume	47
container_issue	67
container_start_page	29184
publishDate	2022
institution	Swansea University
issn	0360-3199
doi_str_mv	10.1016/j.ijhydene.2022.06.230
publisher	Elsevier BV
college_str	Faculty of Science and Engineering
hierarchytype
hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering
url	http://dx.doi.org/10.1016/j.ijhydene.2022.06.230
document_store_str	1
active_str	0
description	The anticipated upscaling of hydrogen energy applications will involve the storage and transport of hydrogen at cryogenic conditions. Understanding the potential hazard arising from leaks in high-pressure cryogenic storage is needed to improve hydrogen safety. The manuscript reports a series of numerical simulations with detailed chemistry for the transient evolution of ignited high-pressure cryogenic hydrogen jets. The study aims to gain insight of the ignition processes, flame structures and dynamics associated with the transient flame evolution. Numerical simulations were firstly conducted for an unignited jet released under the same cryogenic temperature of 80 K and pressure of 200 bar as the considered ignited jets. The predicted hydrogen concentrations were found to be in good agreement with the experimental measurements. The results informed the subsequent simulations of the ignited jets involving four different ignition locations. The predicted time series snapshots of temperature, hydrogen mass fraction and the flame index are analyzed to study the transient evolution and structure of the flame. The results show that a diffusion combustion layer is developed along the outer boundary of the jet and a side diffusion flame is formed for the near-field ignition. For the far-field ignition, an envelope flame is observed. The flame structure contains a diffusion flame on the outer edge and a premixed flame inside the jet. Due to the complex interactions between turbulence, fuel-air mixing at cryogenic temperature and chemical reactions, localized spontaneous ignition and transient flame extinguishment are observed. The predictions also captured the experimentally observed deflagration waves in the far-field ignited jets.
published_date	2022-08-31T04:18:30Z
_version_	1763754231391584256
score	11.013731

The evolution and structure of ignited high-pressure cryogenic hydrogen jets

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