Local modeling of the aerodynamic heating of the blunt body surface in subsonic high-enthalpy air flow. Theory and experiment on a high-frequency plasmatron
- 27 Downloads
The concept of the local similarity of nonequilibrium boundary layers in high-enthalpy gas flows past blunt bodies is briefly described. The technical possibilities of the VGU-4 induction high-frequency plasmatron in modeling the aerodynamic heating of the hypothetical Pre-X (CNES) spacecraft in the vicinity of the stagnation point of a high-enthalpy air flow are presented. The engineering approach to quantitatively reproduce the thermochemical effect of a dissociated air flow on the vehicle surface in the high-heat region of the terrestrial entry trajectory is developed. In this approach the full-scale values of the total enthalpy, the stagnation pressure, and the velocity gradient at the stagnation point near the surface are reproduced in the experiment. The effective coefficients of O and N atom recombination on a silicone carbide (SiC) surface are determined under the conditions similar with those of the peak heating of the Pre-X vehicle surface in the vicinity of the flow stagnation point.
Keywordsmodeling of the aerodynamic heating induction plasmatron numerical modeling nonequilibrium boundary layer heterogenous atom recombination
Unable to display preview. Download preview PDF.
- 1.A. Kolesnikov, “The Aerothermodynamic Simulation in Sub-and Supersonic High-Enthalpy Jets: Experiment and Theory,” in: Proc. 2nd European Symposium on Aerothermodynamics for Space Vehicles. ESA SP-367, 1995 (1995), p. 583.Google Scholar
- 2.A.N. Gordeev and A.F. Kolesnikov, “High-Frequency Induction Plasmatrons of the VGU Series,” in: Topical Problems inMechanics. Physico-ChemicalMechanics of Liquids and Gases [in Russian], Nauka,Moscow(2010), p. 151.Google Scholar
- 3.P.N. Baronets, A.N. Gordeev, A.F. Kolesnikov, V.M. Mysova, I.S. Pershin, V.N. Prilepskii, Yu.K. Rulev, A.S. Trukhanov, and M.I. Yakushin, “Testing of Thermal-ProtectiveMaterials for the Buran Orbiter on Induction Plasmatrons,” in: Gagarin Scientific Readings on Cosmonauticsand Aviation, [in Russian], Nauka, Moscow (1991), p. 41.Google Scholar
- 4.A.N. Gordeev, A.F. Kolesnikov, and M.I. Yakushin, “An Induction Plasmatron Application to ‘Buran’s’ Heat Protection Tiles Ground Tests,” J. SAMPE 28(3), 29 (1992).Google Scholar
- 8.S.A. Vasil’evskii, A.F. Kolesnikov, and M.I. Yakushin, “Determination of the Effective Probabilities of Heterogeneous Atom Recombination under the Conditions of Gas-Phase Reaction Influence on Heat Fluxes,” High Temperature, 29 (3), 411 (1991).Google Scholar
- 11.N.G. Bykova, S.A. Vasil’evskii, A.N. Gordeev, A.F. Kolesnikov, I.S. Pershin, and M.I. Yakushin, “Determination of the Effective Probabilities of Catalytic Reactions of the Surfaces of Heat Shield Materials in Dissociated Carbon Dioxide Flows,” Fluid Dynamics 32 (6), 876 (1997).CrossRefGoogle Scholar
- 12.A. Kolesnikov, M. Yakushin, S. Vasil’evskii, I. Pershin, and A. Gordeev, “Catalysis Heat Effects on Quartz Surfaces in High-Enthalpy Subsonic Oxygen and Carbon Dioxide Flows,” in: Proc. 3rd Europ. Symp. on Aerothermodynamics for Space Vehicles, ESTEC, Noordwijk, The Netherlands. 1999 (1999), p. 537.Google Scholar
- 13.A.F. Kolesnikov, I.S. Pershin, and S.A. Vasil’evskii, “Predicting Catalycity of Si-Based Coating and Stagnation Point Heat Transfer in High-Enthalpy CO2 Subsonic Flows for the Mars Entry Conditions,” in: Proc. Int. Workshop ‘Planetary Probe Atmospheric Entry and Descent Trajectory Analysis and Science’, Lisbon, Portugal, 2004 (2004), p. 77.Google Scholar
- 14.A.F. Kolesnikov, A.N. Gordeev, and S.A. Vasil’evskii, “Heat Transfer in Sub-and Supersonic Nonequilibrium Jets of Carbon Dioxide Plasmas,” in: Proc. 7th Eur. Symposium on Aerothermodynamics ESA SP-69. ESA Communications, ESTEC, Noordwijk, The Netherlands, 2011 (2011).Google Scholar
- 16.A.F. Kolesnikov, “The Concept of Local Simulation for Stagnation Point Heat Transfer in Hypersonic Flows: Application and Validation,” AIAA Paper No. 2515 (2000).Google Scholar