Numerical simulations of large-scale detonation tests in the RUT facility by the LES model

Research output: Contribution to journalArticle

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Abstract

The LES model based on the progress variable equation and the gradient method to simulate propagation of the reaction front within the detonation wave, which was recently verified by the ZND theory, is tested in this study against two large-scale experiments in the RUT facility. The facility was 27.6 m × 6.3 m × 6.55 m compartment with complex three-dimensional geometry. Experiments with 20% and 25.5% hydrogen–air mixture and different location of direct detonation initiation were simulated. Sensitivity of 3D simulations to control volume size and type were tested and found to be stringent compared to the planar detonation case. The maximum simulated pressure peak was found to be lower than the theoretical von Neumann spike value for the planar detonation and larger than the Chapman–Jouguet pressure thus indicating that it is more challenging to keep numerical reaction zone behind a leading front of numerical shock for curved fronts with large control volumes. The simulations demonstrated agreement with the experimental data.
LanguageEnglish
Pages949-956
JournalJournal of Hazardous Materials
Volume181
Issue number1-3
DOIs
Publication statusPublished - 15 Sep 2010

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Detonation
Pressure
Computer simulation
simulation
Hydrogen
Shock
Air
Gradient methods
experiment
hydrogen
geometry
Experiments
air
Geometry
test

Cite this

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title = "Numerical simulations of large-scale detonation tests in the RUT facility by the LES model",
abstract = "The LES model based on the progress variable equation and the gradient method to simulate propagation of the reaction front within the detonation wave, which was recently verified by the ZND theory, is tested in this study against two large-scale experiments in the RUT facility. The facility was 27.6 m × 6.3 m × 6.55 m compartment with complex three-dimensional geometry. Experiments with 20{\%} and 25.5{\%} hydrogen–air mixture and different location of direct detonation initiation were simulated. Sensitivity of 3D simulations to control volume size and type were tested and found to be stringent compared to the planar detonation case. The maximum simulated pressure peak was found to be lower than the theoretical von Neumann spike value for the planar detonation and larger than the Chapman–Jouguet pressure thus indicating that it is more challenging to keep numerical reaction zone behind a leading front of numerical shock for curved fronts with large control volumes. The simulations demonstrated agreement with the experimental data.",
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Numerical simulations of large-scale detonation tests in the RUT facility by the LES model. / Zbikowski, M.; Makarov, Dmitriy; Molkov, Vladimir.

In: Journal of Hazardous Materials, Vol. 181, No. 1-3, 15.09.2010, p. 949-956.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Numerical simulations of large-scale detonation tests in the RUT facility by the LES model

AU - Zbikowski, M.

AU - Makarov, Dmitriy

AU - Molkov, Vladimir

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AB - The LES model based on the progress variable equation and the gradient method to simulate propagation of the reaction front within the detonation wave, which was recently verified by the ZND theory, is tested in this study against two large-scale experiments in the RUT facility. The facility was 27.6 m × 6.3 m × 6.55 m compartment with complex three-dimensional geometry. Experiments with 20% and 25.5% hydrogen–air mixture and different location of direct detonation initiation were simulated. Sensitivity of 3D simulations to control volume size and type were tested and found to be stringent compared to the planar detonation case. The maximum simulated pressure peak was found to be lower than the theoretical von Neumann spike value for the planar detonation and larger than the Chapman–Jouguet pressure thus indicating that it is more challenging to keep numerical reaction zone behind a leading front of numerical shock for curved fronts with large control volumes. The simulations demonstrated agreement with the experimental data.

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