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An entropy correction method for unsteady full potential flows with strong shocks
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Osher, S. J. Hafez, M. M. Whitlow Jr., W. |
| Copyright Year | 1986 |
| Description | An entropy correction method for the unsteady full potential equation is presented. The unsteady potential equation is modified to account for entropy jumps across shock waves. The conservative form of the modified equation is solved in generalized coordinates using an implicit, approximate factorization method. A flux-biasing differencing method, which generates the proper amounts of artificial viscosity in supersonic regions, is used to discretize the flow equations in space. Comparisons between the present method and solutions of the Euler equations and between the present method and experimental data are presented. The comparisons show that the present method more accurately models solutions of the Euler equations and experiment than does the isentropic potential formulation. |
| File Size | 630649 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19860020305 |
| Archival Resource Key | ark:/13960/t7vm94k87 |
| Language | English |
| Publisher Date | 1986-06-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Viscosity Shock Waves Approximation Nonisentropicity Supersonics Bias Euler Equations of Motion Unsteady State Entropy Fluxes Correction Factorization Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
