Comparison of Numerical Methods: DSMC Simulations and N-S Predictions on Bluff Bodies
This paper compares predictions obtained using the Direct Simulation Monte Carlo (DSMC) technique to solve the Boltzmann equation and a Finite Volume technique to solve the Navier-Stokes equations for the flow around a bluff body in a hypersonic regime. Good agreement is obtained between the two approaches for computations of the flowfield around the Marsnet Semi-Hard Lander configuration travelling at Mach 30 at a simulated Earth altitude of 71 km. Predictions of density, temperature and heat transfer are presented.
Key wordsHypersonic flow Numerical methods Direct-simulation Monte Carlo Navier-Stokes
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- Bird GA (1976) Molecular Gas Dynamics. Oxford Univ. Press, Oxford, UKGoogle Scholar
- Cupples M et al. (1991) Optimisation of aerobrake assisted descent trajectories at Mars. AIAA Paper 91–0057Google Scholar
- Gilmore MR (1992) Simulated flows over bluff bodies and wings in the rarefied hypersonic regime. PhD Thesis, University of LondonGoogle Scholar
- Gilmore MR, Harvey JK (1992) Effects of Mach number, T wall, T ∞ and thermal accommodation coefficient, on the flow around bluff bodies in the rarefied regime. In: Shizgal B (ed) Rarefied Gas Dynamics: 18th Symposium, VancouverGoogle Scholar
- Harvey JK (1989) Inelastic collision models for Monte-Carlo simulation computations. In: Rarefied Gas Dynamics: Physical Phenomena, AIAA Publication, Vol 117, pp 3–24Google Scholar
- Netterfield MP (1991) Computations of the aerodynamics of spinning bodies using a point-implicit method. AIAA Paper 91–0339Google Scholar