DSMC量子动理学模型在火星再入流动中的应用

doi:10.7527/S1000-6893.2020.23240

Abstract

Abstract: To solve the problem of lacking high temperature data in chemical reaction models and explore the application capacity of the Quantum Kinetic (QK) model, this paper further applies this model to the reentry flow of the Mars exploration vehicle for numerical prediction of rarefied aerodynamic characteristics. Via calculation of the flow field of the Pathfinder at the heights of 85 km, 95 km, 110 km, respectively, the performance of the QK model and the influence of the rarefied gas effect are evaluated. Results show that the QK model which relies not on the macroscopic reaction rates is suitable for the Mars reentry flows. The rarefied aerodynamics is not sensitive to the chemical reaction and its model; however, the influence of the chemical reaction on the aerothermodynamics cannot be neglected. The heat flux on the stagnation point can reduce by about 12%-14% after the chemical reaction is considered.

Key words: DSMC method, quantum kinetic model, Mars re-entry, chemical reactions, aerodynamic characteristics

CLC Number:

V211.3

LI Jin, GENG Xiangren, CHEN Jianqiang, JIANG Dingwu, LI Hongzhe. Application of DSMC quantum kinetic model in re-entry flow of Mars[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(7): 123240-123240.

References 20

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Application of DSMC quantum kinetic model in re-entry flow of Mars

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