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DOE OSTI · 1976987

Three-dimensional thermo-mechanical simulations of heterogeneous solid propellants

Kumar, Tadbhagya·Jackson, Thomas L.
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Abstract

Here in this work, we present a numerical framework that describes thermo-mechanical deformations in a burning heterogeneous solid propellant. These deformations are quasi-static at time scales associated with combustion, and the resulting thermo-mechanical formulation is discretized on a Cartesian grid using a hypoelastic law. We use a weak form of Chorin-type projection method to deal with large difference in shear modulus of the constituent materials. Extending our previous two-dimensional work, grid convergence studies for a three-dimensional propellant configuration are presented for the stress, velocity, and reference map components. Finally, simulations are carried out for a random propellant pack that is coupled to a gas phase, and we present results for the pack undergoing combustion, with and without deformations.

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simulations42 ENGINEERINGapproximate projection methodheterogeneous propellantthermo-mechanical

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Kumar, Tadbhagya, Jackson, Thomas L.. 2021-11-01. Three-dimensional thermo-mechanical simulations of heterogeneous solid propellants. https://doi.org/10.1016/j.combustflame.2021.111590

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