A Thin-shock-layer Solution for Nonequilibrium, Inviscid Hypersonic Flows in Earth, Martian, and Venusian Atmospheres

A Thin-shock-layer Solution for Nonequilibrium, Inviscid Hypersonic Flows in Earth, Martian, and Venusian Atmospheres

Author: William L. Gose

Publisher:

Published: 1971

Total Pages: 164

ISBN-13:

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An approximate inverse solution is presented for the nonequilibrium flow in the inviscid shock layer about a vehicle in hypersonic flight. The method is based upon a thin-shock-layer approximation and has the advantage of being applicable to both subsonic and supersonic regions of the shock layer. The relative simplicity of the method makes it ideally suited for programming on a digital computer with a significant reduction in storage capacity and computing time required by other more exact methods. Comparison of nonequilibrium solutions for an air mixture obtained by the present method is made with solutions obtained by two other methods. Additional cases are presented for entry of spherical nose cones into representative Venusian and Martian atmospheres. A digital computer program written in FORTRAN language is presented that permits an arbitrary gas mixture to be employed in the solution. The effects of vibration, dissociation, recombination, electronic excitation, and ionization are included in the program.


Inverse-method and Method-of-characteristics Flow-field Programs

Inverse-method and Method-of-characteristics Flow-field Programs

Author: J. B. Moreno

Publisher:

Published: 1967

Total Pages: 136

ISBN-13:

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Two flow-field computer codes are described. The codes were developed to compute the flow about blunt axisymmetric or two-dimensional bodies moving with supersonic speeds at zero angle of attack. Boundary-layer effects and a variety of thermochemical options are included. A pair of auxiliary codes for machine-plotting the flow-field results is also described.