Simulation of Hydrogen Combustion Characteristics in Argon-Oxygen Compression Ignition Engine using Large Eddy Simulation (LES) Turbulence Model

Muhammad Arif Arsyad Nasruldin, Mohd Radzi Abu Mansor

Research output: Contribution to journalConference article

Abstract

Hydrogen combustion in a noble gas atmosphere will increase thermal efficiency because of higher specific heat ratio. During the compression stroke, noble gas produces a higher temperature at the same compression ratio compared to standard air compression. Argon is the best noble gas in this study because it is abundant and readily available. In this study, argon replaced the nitrogen and formed the argon-oxygen atmosphere in a compression ignition engine. The objectives of this study are to determine the suitable initial temperature for simulation work based on the experimental value and to study the effect of injection parameter changes towards combustion and emission characteristics. This study uses Converge V2.4 CFD simulation based on Yanmar NF19SK engine parameter. The turbulence model used Large Eddy Simulation (LES) due to accessibility in extensive eddies calculation that has a significant fraction of energy. Thus, combustion analysis accuracy also increased. Base grid of 5mm with adaptive mesh refinement (AMR) and fix embedding is chosen based on simulation time and computer storage. Combustion simulations involve changing of initial temperature, the start of injection (SOI) and injection pressure to obtain pressure and heat release rate data. At intake temperature of 370K, hydrogen combustion shows the highest peak pressure, and for intake temperature at 500K, SOI of 700 °CA produces the highest peak pressure for the combustion. Ignition delay increases as the temperature and injection pressure decrease.

Original languageEnglish
Article number012056
JournalIOP Conference Series: Earth and Environmental Science
Volume354
Issue number1
DOIs
Publication statusPublished - 25 Oct 2019
Event4th International Conference on New Energy and Future Energy System, NEFES 2019 - Macao, China
Duration: 21 Jul 201924 Jul 2019

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large eddy simulation
argon
engine
combustion
turbulence
compression
hydrogen
oxygen
noble gas
simulation
temperature
atmosphere
accessibility
eddy
nitrogen
air
energy

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

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title = "Simulation of Hydrogen Combustion Characteristics in Argon-Oxygen Compression Ignition Engine using Large Eddy Simulation (LES) Turbulence Model",
abstract = "Hydrogen combustion in a noble gas atmosphere will increase thermal efficiency because of higher specific heat ratio. During the compression stroke, noble gas produces a higher temperature at the same compression ratio compared to standard air compression. Argon is the best noble gas in this study because it is abundant and readily available. In this study, argon replaced the nitrogen and formed the argon-oxygen atmosphere in a compression ignition engine. The objectives of this study are to determine the suitable initial temperature for simulation work based on the experimental value and to study the effect of injection parameter changes towards combustion and emission characteristics. This study uses Converge V2.4 CFD simulation based on Yanmar NF19SK engine parameter. The turbulence model used Large Eddy Simulation (LES) due to accessibility in extensive eddies calculation that has a significant fraction of energy. Thus, combustion analysis accuracy also increased. Base grid of 5mm with adaptive mesh refinement (AMR) and fix embedding is chosen based on simulation time and computer storage. Combustion simulations involve changing of initial temperature, the start of injection (SOI) and injection pressure to obtain pressure and heat release rate data. At intake temperature of 370K, hydrogen combustion shows the highest peak pressure, and for intake temperature at 500K, SOI of 700 °CA produces the highest peak pressure for the combustion. Ignition delay increases as the temperature and injection pressure decrease.",
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AB - Hydrogen combustion in a noble gas atmosphere will increase thermal efficiency because of higher specific heat ratio. During the compression stroke, noble gas produces a higher temperature at the same compression ratio compared to standard air compression. Argon is the best noble gas in this study because it is abundant and readily available. In this study, argon replaced the nitrogen and formed the argon-oxygen atmosphere in a compression ignition engine. The objectives of this study are to determine the suitable initial temperature for simulation work based on the experimental value and to study the effect of injection parameter changes towards combustion and emission characteristics. This study uses Converge V2.4 CFD simulation based on Yanmar NF19SK engine parameter. The turbulence model used Large Eddy Simulation (LES) due to accessibility in extensive eddies calculation that has a significant fraction of energy. Thus, combustion analysis accuracy also increased. Base grid of 5mm with adaptive mesh refinement (AMR) and fix embedding is chosen based on simulation time and computer storage. Combustion simulations involve changing of initial temperature, the start of injection (SOI) and injection pressure to obtain pressure and heat release rate data. At intake temperature of 370K, hydrogen combustion shows the highest peak pressure, and for intake temperature at 500K, SOI of 700 °CA produces the highest peak pressure for the combustion. Ignition delay increases as the temperature and injection pressure decrease.

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