Multi-Fidelity Approach to Estimate Heating for Three-Dimensional Hypersonic Aeroshells

Autor:	John E. Theisinger, Stephen M. Ruffin, Ian G. Clark, Robert D. Braun, Matthew S. Bopp
Rok vydání:	2013
Předmět:	Physics Hypersonic speed Aerodynamic heating Rotational symmetry Aerospace Engineering Mechanics Physics::Fluid Dynamics symbols.namesake Boundary layer Classical mechanics Physics::Plasma Physics Space and Planetary Science Inviscid flow Euler's formula symbols Newtonian fluid Shape optimization
Zdroj:	Journal of Spacecraft and Rockets. 50:754-762
ISSN:	1533-6794 0022-4650
DOI:	10.2514/1.a32211
Popis:	In the early stages of aeroshell shape design, it is important to strike an appropriate balance between analysis fidelity and computational effort. Because the prediction of aerodynamic heating for axisymmetric flows is significantly faster than for three-dimensional flows, it is advantageous to employ an axisymmetric analysis method. The current work couples an equivalent axisymmetric body technique with different axisymmetric analysis methods, using a series of axisymmetric bodies to approximate the three-dimensional heating. Three levels of fidelity are considered: 1) a Newtonian inviscid solution coupled with an axisymmetric integral boundary layer approach, 2) an Euler solution coupled with an axisymmetric integral boundary-layer approach, and 3) a Navier–Stokes solution applied to each equivalent axisymmetric body. Approximate solutions for three-dimensional flows were compared with high-fidelity computational and experimental data, establishing the accuracy for various levels of fidelity. The multi-fidelity analysis showed that significant decreases in computational times could be achieved, at the same time maintaining sufficient accuracy to perform shape optimization.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59e1e83222208ee85344127be95cdcb9 https://doi.org/10.2514/1.a32211 Zobrazit plný text záznamu