Laminar and turbulent heating predictions for mars entry vehicles

Imported: 29 Jul '16 | Published: 25 Jul '16

Xiaoyong Wang, Chao Yan, Weilin Zheng, Kang Zhong, Yunfei Geng

Acta Astronautica

Abstract: Laminar and turbulent heating rates play an important role in the design of Mars entry vehicles. Two distinct gas models, thermochemical non-equilibrium (real gas) model and perfect gas model with specified effective specific heat ratio, are utilized to investigate the aerothermodynamics of Mars entry vehicle named Mars Science Laboratory (MSL). Menter shear stress transport (SST) turbulent model with compressible correction is implemented to take account of the turbulent effect. The laminar and turbulent heating rates of the two gas models are compared and analyzed in detail. The laminar heating rates predicted by the two gas models are nearly the same at forebody of the vehicle, while the turbulent heating environments predicted by the real gas model are severer than the... Read More

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