Newly identified principle for aerodynamic heating in hypersonic flows

Parallel Computation in Hypersonic Aerodynamic Heating Problem

A parallel computational fluid dynamics code has been developed for the study of aerodynamic heating problem in hypersonic flows. The code employs the 3D Navier-Stokes equations as the basic governing equations to simulate the laminar hypersonic flow. The cell centered finite volume method based on structured grid is applied for spatial discretization. The AUSMPW+ scheme is used for the invisci...

The Analysis of Underexpanded Jet Flows for Hypersonic Aerodynamic Experiments in Vacuum Chambers

Underexpanded jets have become widely used in studies of rarefied-gas flows [1][3] and aerodynamics of hypersonic probes in wind tunnels [4]-[7]. The objective of the present study is to analyze shapes and flow parameters in internal regions of hypersonic underexpanded viscous jets, and to apply the jet theory to hypersonic studies. Analytical solutions [7] are used for estimating internal flow...

Thermo-viscopiastic Analysis of Hypersonic Structures Subjected to Severe Aerodynamic Heating

1 X - 33 Hypersonic Aerodynamic Characteristics

Lockheed Martin Skunk Works, under a cooperative agreement with NASA, will build and fly the X-33, a half-scale prototype of a rocket-based, single-stage-to-orbit (SSTO), reusable launch vehicle (RLV). A 0.007-scale model of the X-33 604B0002G configuration was tested in four hypersonic facilities at the NASA Langley Research Center to examine vehicle stability and control characteristics and t...

Turning Flows into Trees: Graph Analytics for Aerodynamic Flows

Computational Fluid Dynamics (CFD) provides valuable simulation tools to the industry. In recent years, the development of the underlying algorithms and hardware resulted in a steep increase in the size of the data generated by CFD-solvers. The resulting I/O bottleneck can be alleviated by the use of contour trees : trees that capture the nesting relationship of isosurfaces of scalar fields, an...