Numerical simulation of a turbulent flow through a shock wave
| Autor: | Mohammad Farshchi, Gary D. Kuhn, David Nixon |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Physics
Shock wave Turbulence business.industry Astrophysics::High Energy Astrophysical Phenomena Mechanics Computational fluid dynamics Shock (mechanics) Physics::Fluid Dynamics symbols.namesake Mach number Physics::Space Physics Turbulence kinetic energy symbols Oblique shock business Transonic Astrophysics::Galaxy Astrophysics |
| Zdroj: | 21st Fluid Dynamics, Plasma Dynamics and Lasers Conference. |
| DOI: | 10.2514/6.1990-1641 |
| Popis: | This report describes the results of research into the interactions between shock waves and turbulent flows using numerical simulations. The research was conducted at transonic speeds with a normal shock wave and two dimensional turbulence, making use of existing knowledge and computational methods for developing insight to the shock/turbulence interaction. The results indicate that the shock has a significant effect on the turbulence. The shock produces a jump in the turbulence statistics, with a long relaxation distance to return to unshocked values. The turbulence kinetic energy is increased by as much as 30 percent by the shock. The density-velocity correlation becomes important during the shock jump and is greatly increased over the case without a shock. On the other hand, the pressure-velocity correlation is not so important. The shock speed and ripple were found to be important factors in determining the turbulence downstream of a shock wave. Shock speed and ripple correlations are the same size as other important turbulence correlations. The work must be extended to higher Mach numbers and three-dimensional turbulence, with oblique shocks and shear flows. The shock ripple may be more important for oblique shocks because of the larger v component. (jhd) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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