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Shock-wave-initiated lifting of particles from a cavity

Bedarev, I. ; Gosteev, Yu. ; Fedorov, A.

Journal of Applied Mechanics and Technical Physics, 2007, Vol.48(1), pp.17-26 [Periódico revisado por pares]

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Título:
Shock-wave-initiated lifting of particles from a cavity
Autor: Bedarev, I. ; Gosteev, Yu. ; Fedorov, A.
Assuntos: shock wave ; cavity ; turbulent separated flow ; rarefied gas suspension ; particle lifting ; mathematical modeling
É parte de: Journal of Applied Mechanics and Technical Physics, 2007, Vol.48(1), pp.17-26
Descrição: The dynamics of particles of the disperse phase in a turbulent gas flow in planar shock waves sliding along a solid surface with a trapezoid cavity is examined numerically. Lifting of particles from the cavity walls is calculated in the approximation of a rarefied gas suspension. It is shown that the intensity of the transient shock wave and the initial positions of particles have a significant effect on the particle-lifting properties. The height of particle lifting is found to nonmonotonically depend on the initial streamwise coordinate and shock-wave Mach number. It is shown that zones of aggregation and subtraction of particles may be formed at the cavity bottom.
Idioma: Inglês

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