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Hypersonic Shock/Boundary-Layer Interaction Database.

N9115986

Publication Date	1990
Personal Author	Settles, G. S.; Dodson, L. J.
Page Count	156
Abstract	Turbulence modeling is generally recognized as the major problem obstructing further advances in computational fluid dynamics (CFD). A closed solution of the governing Navier-Stokes equations for turbulent flows of practical consequence is still far beyond grasp. At the same time, the simplified models of turbulence which are used to achieve closure of the Navier-Stokes equations are known to be rigorously incorrect. While these models serve a definite purpose, they are inadequate for the general prediction of hypersonic viscous/inviscid interactions, mixing problems, chemical nonequilibria, and a range of other phenomena which must be predicted in order to design a hypersonic vehicle computationally. Due to the complexity of turbulence, useful new turbulence models are synthesized only when great expertise is brought to bear and considerable intellectual energy is expended. Although this process is fundamentally theoretical, crucial guidance may be gained from carefully-executed basic experiments. Following the birth of a new model, its testing and validation once again demand comparisons with data of unimpeachable quality. This report concerns these issues which arise from the experimental aspects of hypersonic modeling and represents the results of the first phase of an effort to develop compressible turbulence models.
Keywords	Computational fluid dynamics Data bases Hypersonic flow Interactional aerodynamics Program verification (Computers) Shock wave interaction Turbulence models Turbulent boundary layer Hypersonic vehicles Mathematical models Navier-stokes equation Turbulent flow
Source Agency	National Aeronautics and Space Administration
NTIS Subject Category	51A - Aerodynamics
Corporate Authors	Pennsylvania State Univ., University Park. Dept. of Mechanical Engineering.; National Aeronautics and Space Administration, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	199112
Contract Number	NAG2-565

Hypersonic Shock/Boundary-Layer Interaction Database.

Hypersonic Shock/Boundary-Layer Interaction Database.
N9115986

Publication Date	1990
Personal Author	Settles, G. S.; Dodson, L. J.
Page Count	156
Abstract	Turbulence modeling is generally recognized as the major problem obstructing further advances in computational fluid dynamics (CFD). A closed solution of the governing Navier-Stokes equations for turbulent flows of practical consequence is still far beyond grasp. At the same time, the simplified models of turbulence which are used to achieve closure of the Navier-Stokes equations are known to be rigorously incorrect. While these models serve a definite purpose, they are inadequate for the general prediction of hypersonic viscous/inviscid interactions, mixing problems, chemical nonequilibria, and a range of other phenomena which must be predicted in order to design a hypersonic vehicle computationally. Due to the complexity of turbulence, useful new turbulence models are synthesized only when great expertise is brought to bear and considerable intellectual energy is expended. Although this process is fundamentally theoretical, crucial guidance may be gained from carefully-executed basic experiments. Following the birth of a new model, its testing and validation once again demand comparisons with data of unimpeachable quality. This report concerns these issues which arise from the experimental aspects of hypersonic modeling and represents the results of the first phase of an effort to develop compressible turbulence models.
Keywords	Computational fluid dynamics Data bases Hypersonic flow Interactional aerodynamics Program verification (Computers) Shock wave interaction Turbulence models Turbulent boundary layer Hypersonic vehicles Mathematical models Navier-stokes equation Turbulent flow
Source Agency	National Aeronautics and Space Administration
NTIS Subject Category	51A - Aerodynamics
Corporate Authors	Pennsylvania State Univ., University Park. Dept. of Mechanical Engineering.; National Aeronautics and Space Administration, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	199112
Contract Number	NAG2-565