High-temperature effects in hypersonic flows

Prabhu, DK (1993) High-temperature effects in hypersonic flows. Technical Report. National Aerospace Laboratories, Bangalore, India.

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The hypersonic (M = 25) flow past a 100 right circular cone at 0 angle of attack has been computed using an implicit, noniterative, finite-difference scheme for the parabolized Navier-Stokes (PNS) equations . Three different gas models have been considered in the study - (1)ideal gas (y =constant), (2) equilibrium air, and (3) five species (N 2 , 02 , NO, N, 0) chemical nonequilibrium air. For the nonequilibrium air case, three different models have been considered - (a) one in which the consituent species have no internal structure (i.e. . species are ideal gases), (b) one in which the consituent species have internal stucture (i.e., species are thermally perfect gases), and (c) one in which the species have internal structure and their thermodynamic properties have been obtained from quantum mechanical and spectroscopic calculations . Grid studies have been done for the ideal and nonequilibrium air cases . Code optimisation studies on the computing platforms in the CTFD Division have been carried out and the results documented .

Item Type: Monograph (Technical Report)
Uncontrolled Keywords: High-temperature effects;Hypersonic flows
Subjects: ENGINEERING > Fluid Mechanics and Thermodynamics
Depositing User: Mrs Neetu Chandra
Date Deposited: 11 Jul 2006
Last Modified: 24 May 2010 04:13
URI: http://nal-ir.nal.res.in/id/eprint/1642

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