Modelling detonation of H2–O2–N2 mixtures in presence of solid particles in 3D scenarios
| Autor: | Ahmed Bentaib, R.A. Otón-Martínez, F.J.S. Velasco, Jose Ramon Garcia-Cascales, S. Espín, N. Meynet |
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| Rok vydání: | 2016 |
| Předmět: |
Arrhenius equation
Work (thermodynamics) Renewable Energy Sustainability and the Environment 05 social sciences Detonation Energy Engineering and Power Technology Mechanics Condensed Matter Physics Combustion 01 natural sciences 010305 fluids & plasmas law.invention Ignition system symbols.namesake Fuel Technology AUSM law 0502 economics and business 0103 physical sciences symbols Particle 050207 economics Reactor pressure vessel |
| Zdroj: | International Journal of Hydrogen Energy. 41:17154-17168 |
| ISSN: | 0360-3199 |
| Popis: | This work presents a numerical approach for modelling the detonation of H2–O2–N2 mixtures in the presence of reactive solid particles. The model relies on Euler-type equations with one-step Arrhenius chemistry and the inclusion of source terms accounting for interphase transport. A splitting method that uses AUSM+ and Rusanov schemes and the linearisation of source terms are applied to achieve a numerical solution to the problem. Benchmark of numerical simulations against experimental tests with graphite and tungsten particles confirms the efficiency of this engineering approach for obtaining key global variables in accident sequences such as combustion time or pressure history. Due to its simple kinetics, the model is not able to provide a detailed description of the chemistry or the ignition process. The influence of particle concentration and O2 concentration on maximum pressure and combustion time is addressed. Finally, a detonation sequence with dust particles in the ITER reactor vessel is addressed through 3D simulation under lost of vacuum conditions. |
| Databáze: | OpenAIRE |
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