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Development and application of computational aerothermodynamics flowfield computer codes (Document No: 19930015547)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Venkatapathy, Ethiraj |
| Copyright Year | 1993 |
| Description | Computations are presented for one-dimensional, strong shock waves that are typical of those that form in front of a reentering spacecraft. The fluid mechanics and thermochemistry are modeled using two different approaches. The first employs traditional continuum techniques in solving the Navier-Stokes equations. The second-approach employs a particle simulation technique (the direct simulation Monte Carlo method, DSMC). The thermochemical models employed in these two techniques are quite different. The present investigation presents an evaluation of thermochemical models for nitrogen under hypersonic flow conditions. Four separate cases are considered. The cases are governed, respectively, by the following: vibrational relaxation; weak dissociation; strong dissociation; and weak ionization. In near-continuum, hypersonic flow, the nonequilibrium thermochemical models employed in continuum and particle simulations produce nearly identical solutions. Further, the two approaches are evaluated successfully against available experimental data for weakly and strongly dissociating flows. |
| File Size | 9804566 |
| Page Count | 262 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930015547 |
| Archival Resource Key | ark:/13960/t7sn53w3n |
| Language | English |
| Publisher Date | 1993-04-23 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Fluid Mechanics Thermochemistry Computational Fluid Dynamics Hypersonic Flow Molecular Relaxation Monte Carlo Method Computer Programs Navier-stokes Equation Shock Waves Thermochemical Properties Ionization Flow Distribution Continuum Mechanics Dissociation Aerothermodynamics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
