629.762 Some examples of numerical simulation of unsteady gas dynamical phenomena for the purpose of lifting vehicles design

Plyusnin A. V. (Bauman Moscow State Technical University)

GAS FLOW, GAS DYNAMICAL EJECTION, CANISTER, LIFTING VEHICLE, NUMERICAL SIMULATION


doi: 10.18698/2309-3684-2020-4-4460


The problem of unsteady gas flow between two volumes has been considered for the spatial and for the engineering formulations. The comparison of the two solutions has been presented which allows to assess the accuracy of the engineering approach usually utilized in practical calculations. The problem has been also considered of the determination of the unsteady force acting on the bottom of the canister at the stage of the lifting vehicle exit in the process of the gas dynamical ejection. The numerical simulation of the spatial problems has been completed in accordance with the classical Godunov’s method including the moving grid technique.


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