We consider here the flow instability that evolves during the spontaneous release of a high pressure gas mixed with small solid particles in a spherical shock tube representing a detonative combustion. Upon the release of the particle-laden high pressure gas contained in the small sphere, a primary shock and a secondary shock are formed. Two material interfaces develop between the two shocks: one between the gas-gas, as in the classical single-phase problem. The second one is between the pure gas and the mixture of gas and solid particles. Because of the density discontinuity, Rayleigh-Taylor-type instabilities may develop for both surfaces, which are studied herein using a high-order numerical scheme. The interaction mechanisms involved can influence the instability and control the efficiency of the combustion process.
- Fluids Engineering Division
Simulations of the Effects of Solid Particles on the Flow Instability in Detonative Combustion
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Mankbadi, MR, & Balachandar, S. "Simulations of the Effects of Solid Particles on the Flow Instability in Detonative Combustion." Proceedings of the ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. Volume 1: Symposia, Parts A and B. Rio Grande, Puerto Rico, USA. July 8–12, 2012. pp. 1561-1569. ASME. https://doi.org/10.1115/FEDSM2012-72115
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