Reseach on accommodation parameter of linear bridging relation for blunt cone in transitional regime
- 1. College of Aerospace and Material Engineering, National Univ. of Defense Technology, Changsha 410073, China
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Project supported by the Doctoral Fund of Ministry of Education of China (Grant No. 200899980006), the State Key Program of National Natural Science Foundation of China (Grant No. 90916018), and the Nature Science Foundation of Hunan Province (Grant No. 09JJ3109).
Abstract: Due to the complex flow in the transitional regime and the nonlinearity of the flow control functions, when a launch verhicle is designed, the aerodynamic heating is predicted mainly by engineering method. The accommodation parameter of linear bridging relation which is used to calculate the heat flux in transitional regime is fixed to fit the blunt cone which is widely used. The results of the bridging relation are validated by using the DSMC method. The validation shows that the accommodation parameter suited for the blunt cone and ensuring the linear bridging relation may be used to calculate the heat flux of blunt cone in a transitional regime.