A novel model and a new numerical method are presented for the transport of solid particles in rarefied flows. The model is based on a Vlasov type equation where the particles are represented by a distribution function. The rarefied flow is described by a BGK or ES-BGK approach. An accurate method is proposed to solve the particle transport equation in a fully Eulerian framework. Validations in 2D with respect to analytical solutions and a Lagrangian method are presented. The numerical model is then used to explain a peculiar particle dynamics observed in satellite thrusters.

Simulation of particle dynamics for rarefied flows: Backflow in thruster plumes

PUPPO, GABRIELLA ANNA
2017-01-01

Abstract

A novel model and a new numerical method are presented for the transport of solid particles in rarefied flows. The model is based on a Vlasov type equation where the particles are represented by a distribution function. The rarefied flow is described by a BGK or ES-BGK approach. An accurate method is proposed to solve the particle transport equation in a fully Eulerian framework. Validations in 2D with respect to analytical solutions and a Lagrangian method are presented. The numerical model is then used to explain a peculiar particle dynamics observed in satellite thrusters.
2017
Mathematical Physics; Physics and Astronomy (all)
Bernard, Florian; Iollo, Angelo; Puppo, GABRIELLA ANNA
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2060088
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