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Analysis of aerothermal loads on spherical dome protuberances
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Olsen, G. C. Smith, R. E. |
| Copyright Year | 1983 |
| Description | Hypersonic flow over spherical dome protuberances was investigated to determine increased pressure and heating loads to the surface. The configuration was mathematically modeled in a time-dependent three-dimensional analysis of the conservation of mass, momentum (Navier-Stokes), and energy equations. A boundary mapping technique was used to obtain a rectangular parallelepiped computational domain, a MacCormack explicit time-split predictor-corrector finite difference algorithm was used to obtain solutions. Results show local pressures and heating rates for domes one-half, one, and two boundary layer thicknesses high were increased by factors on the order of 1.4, 2, and 6, respectively. Flow over the lower dome was everywhere attached while flow over the intermediate dome had small windward and leeside separations. The higher dome had an unsteady windward separation region and a large leeside separation region. Trailing vortices form on all domes with intensity increasing with dome height. Discussion of applying the results to a thermally bowed thermal protection system are presented. |
| File Size | 693558 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19830014274 |
| Archival Resource Key | ark:/13960/t3nw49739 |
| Language | English |
| Publisher Date | 1983-04-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Predictor-corrector Methods Navier-stokes Equation Thermal Protection Protuberances Vortices Finite Difference Theory Aerodynamic Heating Hypersonic Flow Mathematical Models Aerothermodynamics Domes Structural Forms Loads Forces Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
