Equilibrium and nonequilibrium modeling of hypersonic inviscid flows
Hypersonic flows about ellipses at high angles of attack are analyzed by means of nonequilibrium, equilibrium and inert gas models. It is shown that the technique proposed for the nonequilibrium model, based on a streamline integration of the chemical rate equations, provides accurate results and al...
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| Veröffentlicht in: | Computers & fluids 1993, Vol.22 (2), p.369-380 |
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| container_title | Computers & fluids |
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| creator | Sabetta, F. Favini, B. Onofri, M. |
| description | Hypersonic flows about ellipses at high angles of attack are analyzed by means of nonequilibrium, equilibrium and inert gas models. It is shown that the technique proposed for the nonequilibrium model, based on a streamline integration of the chemical rate equations, provides accurate results and allows precise computation of the stagnation point conditions, where equilibrium must be attained. Compared with the nonequilibrium one, the equilibrium model underpredicts the bow shock stand-off distance and overpredicts the wall temperature, whereas the inert gas model can only be used as a crude approximation for evaluating the wall pressure. |
| doi_str_mv | 10.1016/0045-7930(93)90066-I |
| format | Article |
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| ispartof | Computers & fluids, 1993, Vol.22 (2), p.369-380 |
| issn | 0045-7930 1879-0747 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_746256236 |
| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Compressible flows shock and detonation phenomena Computational methods Exact sciences and technology Fluid dynamics Fundamental areas of phenomenology (including applications) Inert gases Mathematical models Physics Pressure Temperature |
| title | Equilibrium and nonequilibrium modeling of hypersonic inviscid flows |
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