Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor

Unlike hydrocarbon fuel, hydrogen is ‘green’ and attracting more and more attentions in energy and propulsion sectors due to the zero emission of CO and CO2. By applying numerical simulations, we explore the physics of how a hydrogen-burnt flame can sustain pulsating combustion and its impact on the...

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Main Authors: Zhao, Dan, Guan, Yiheng, Reinecke, Arne
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/141840
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1418402023-03-04T17:17:01Z Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor Zhao, Dan Guan, Yiheng Reinecke, Arne School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Energy Modelling Statistical Physics, Thermodynamics and Nonlinear Dynamics Unlike hydrocarbon fuel, hydrogen is ‘green’ and attracting more and more attentions in energy and propulsion sectors due to the zero emission of CO and CO2. By applying numerical simulations, we explore the physics of how a hydrogen-burnt flame can sustain pulsating combustion and its impact on the thermodynamic properties of a standing-wave combustor. We also explain how implementing a heat exchanger can mitigate such pulsating combustion. The dynamic interactions of the unsteady flow-flame-acoustics-heater are examined by varying the mass flow rate ṁH2 and the heating bands’ surface temperature TH. The frequency and amplitude of the pulsating combustion are shown to depend strongly on ṁH2. In addition, varying TH is shown to lead to not only the molar fraction of the combustion species being changed but also the flame-sustained pulsating oscillations being mitigated somehow. Finally, nonlinearity is observed and identified in the unsteady flow velocity and the two heat sources. NRF (Natl Research Foundation, S’pore) Published version 2020-06-11T03:39:18Z 2020-06-11T03:39:18Z 2019 Journal Article Zhao, D., Guan, Y., & Reinecke, A. (2019). Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor. Commuications Physics, 2(1), 44-. doi:10.1038/s42005-019-0142-8 2399-3650 https://hdl.handle.net/10356/141840 10.1038/s42005-019-0142-8 2-s2.0-85071178317 1 2 en Communications Physics © 2019 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Energy Modelling
Statistical Physics, Thermodynamics and Nonlinear Dynamics
spellingShingle Engineering::Mechanical engineering
Energy Modelling
Statistical Physics, Thermodynamics and Nonlinear Dynamics
Zhao, Dan
Guan, Yiheng
Reinecke, Arne
Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor
description Unlike hydrocarbon fuel, hydrogen is ‘green’ and attracting more and more attentions in energy and propulsion sectors due to the zero emission of CO and CO2. By applying numerical simulations, we explore the physics of how a hydrogen-burnt flame can sustain pulsating combustion and its impact on the thermodynamic properties of a standing-wave combustor. We also explain how implementing a heat exchanger can mitigate such pulsating combustion. The dynamic interactions of the unsteady flow-flame-acoustics-heater are examined by varying the mass flow rate ṁH2 and the heating bands’ surface temperature TH. The frequency and amplitude of the pulsating combustion are shown to depend strongly on ṁH2. In addition, varying TH is shown to lead to not only the molar fraction of the combustion species being changed but also the flame-sustained pulsating oscillations being mitigated somehow. Finally, nonlinearity is observed and identified in the unsteady flow velocity and the two heat sources.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Zhao, Dan
Guan, Yiheng
Reinecke, Arne
format Article
author Zhao, Dan
Guan, Yiheng
Reinecke, Arne
author_sort Zhao, Dan
title Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor
title_short Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor
title_full Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor
title_fullStr Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor
title_full_unstemmed Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor
title_sort characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor
publishDate 2020
url https://hdl.handle.net/10356/141840
_version_ 1759855046260948992