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What models are used to simulate hydrogen explosions?

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The simulation of hydrogen explosions involves the utilization of various models. One approach involves the modeling of turbulent combustion in large domains with limited resolution, focusing on turbulent flame speed methodologies and different turbulence simulation techniques like LES or RANS . Another model assesses the predictive capabilities of FLACS-CFD for deflagrations with hydrogen, including a Markstein number dependent model for accurate overpressure predictions . Additionally, there are discussions on two different numerical simulation approaches for gaseous combustion: one based on Navier-Stokes equations and the other on low-Mach number approximation, each with its benefits and limitations . Furthermore, an original numerical study presents a methodology for simulating gaseous explosions with hydrogen in closed vessels and chain propagation scenarios, considering lean mixtures and transmission of explosions between compartments .

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Journal Article•DOI LES – DFSD modelling of vented hydrogen explosions in a small-scale combustion chamber Mohamed Elshimy, Salah Ibrahim, Weeratunge Malalasekera - Show less +2 more 01 Sep 2021-Journal of Loss Prevention in The Process Industries 9 Citations	The study utilizes transient compressible large eddy simulation (LES) combined with a dynamic flame surface density (DFSD) combustion model to simulate vented hydrogen explosions in a small-scale combustion chamber.
Journal Article•DOI Simulation of Hydrogen Explosions in Closed or Vented Connected Vessels J.M. Pascaud, X. Rocourt, Isabelle Sochet - Show less +2 more 16 Jan 2022-Combustion Science and Technology 1 Citations	The paper utilizes a fast calculation methodology for simulating hydrogen explosions in closed vessels and chain propagation in vented vessels, incorporating simplified kinetics and energy transfer representations.
Open access•Dissertation•DOI A model for turbulent combustion simulation of large scale hydrogen explosions 10 Oct 2022	Turbulent flame speed models and LES or RANS methodologies are utilized to simulate hydrogen explosions in large-scale scenarios, as discussed in the research paper.
Open access•Journal Article•DOI Numerical Modeling of Hydrogen Combustion: Approaches and Benchmarks I. S. Yakovenko, Alexey Kiverin - Show less +1 more 16 Jun 2023-Fire	Two models used for simulating hydrogen combustion are the compressible model based on Navier-Stokes equations and the low-Mach model utilizing the FDS numerical scheme.
Open access•Journal Article•DOI CFD modelling of hydrogen and hydrogen-methane explosions – Analysis of varying concentration and reduced oxygen atmospheres Melodia Lucas, Helene Hisken, Trygve Skjold, Bjørn J. Arntzen, Kees van Wingerden - Show less +4 more 01 Feb 2023-Journal of Loss Prevention in The Process Industries	The FLACS-CFD 22.1 model system and a Markstein number dependent model in FLACS-CFD 22.1 IH are used to simulate hydrogen explosions with varying concentrations and reduced oxygen atmospheres.

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