Numerical simulations of large-scale detonation tests in the RUT facility by the LES model
| Autor: | Dmitriy Makarov, Vladimir Molkov, Mateusz Zbikowski |
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| Rok vydání: | 2010 |
| Předmět: |
Environmental Engineering
Materials science Computer simulation Health Toxicology and Mutagenesis Detonation Explosions Mechanics Models Theoretical Pollution Control volume Shock (mechanics) Planar Environmental Chemistry Computer Simulation Statistical physics Sensitivity (control systems) Waste Management and Disposal Gradient method Large eddy simulation |
| Zdroj: | Journal of Hazardous Materials. 181:949-956 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2010.05.105 |
| Popis: | 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 x 6.3 m x 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. |
| Databáze: | OpenAIRE |
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