화성대기 돌입체 주위 열화학 비평형 유동장의 3차원계산 Three Dimensional Calculation of Thermochemical Nonequilibrium Flow field over Mars Entry Body
pp.363-369
A three-dimensional computational fluid dynamics code is developed for predicting nonequilibrium flowfields over Mars entry probes. The numerical scheme is based on the cell-vertex finite volume method for a prismatic unstructured mesh system. Internal energy excitations and chemical reactions with finite rates are considered by introducing the two-temperature model of Park. Eight chemical species, C, N, O, CO, N2, NO, O2, and CO2, and nine chemical reactions are considered in the calculations. The developed code is verified in terms of prediction of heat flux to the body surface near the stagnation point of a Mars entry probe flying with the velocity of 6 km/s. The calculated heat flux reasonably agree with the calculated result in the past studies.
2. M ethod of calculations
2.1 G overning Equations
2.2 Therm ochem ical m odels
2.3 Transport properties
2.4 N um erical m ethods
3. Test C onditions
4. Results and Discussions
5. C onclusions
A cknow ledgem ents
References