Comparison of hypersonic experiments and PNS predictions. I - Aerothermodynamics. II - Aerodynamics

Autor:	Clark H. Lewis, Bilal A. Bhutta
Rok vydání:	1991
Předmět:	Physics Hypersonic speed Shock (fluid dynamics) Angle of attack business.industry Aerospace Engineering Mechanics Perfect gas Aerodynamics Ideal gas symbols.namesake Mach number Space and Planetary Science symbols Aerospace engineering business Wind tunnel
Zdroj:	Journal of Spacecraft and Rockets. 28:387-393
ISSN:	1533-6794 0022-4650
DOI:	10.2514/3.26257
Popis:	A 3D parabolized Navier-Stokes (PNS) technique is examined in terms of applications to equilibrium-air and perfect-gas hypersonic flows at different Mach numbers and angles of attack. The method renders sublayer approximation unnecessary, and treats axis-normal coupling effects first followed by a shock solution and a corrector step. Predictions of hypersonic flowfields over several blunt conical configurations are found to agree with established wind-tunnel and flight data, although those for the Dhawan-Narasimha (1958) transition model vary from the experimental data. The PNS technique is also applied to predictions of wall-pressure distributions and force and moment data, and the results agree with experimental values. The PNS method allows the calculation of a wide variety of configurations with only a slight increase over traditional computing times.
Databáze:	OpenAIRE
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