Viscous hypersonic shock-on-shock interaction on blunt cowl lips

Klopfer, G. H.; Yee, H. C.

doi:10.2514/6.1988-233

Cited by 69 publications

(32 citation statements)

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“…This jet impinges on the body, ending in a terminating strong shock. At the jet impingement point, extremely high surface pressures and heating rates are encountered' 9 ' 10 ' n ' 12 '. As the jet flow is expanded over the surface, it once again becomes supersonic.…”

mentioning

confidence: 99%

Unsteady shock-wave reflection and interaction in viscous flow with thermal and chemical nonequilibrium

Furumoto

Zhong

Skiba

1996

34th Aerospace Sciences Meeting and Exhibit

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Steady shock/boundary layer interactions and self-sustained unsteady type IV shock-shock interference heating problems with nonequilibrium real gas effects were studied by numerical simulations. We emphasized the effects of internal thermochemical excitation on surface heating rates, skin friction, and flow-field unsteadiness of the viscous shock interactions. The multicomponent Navier-Stokes equations with nonequilibrium rotational, vibrational, and chemical models for five-species air were solved by a finite-volume second-order TVD scheme together with a new third-order semi-implicit Runge-Kutta scheme. For the steady shock/boundary layer interaction on a flat plate, it was found that the real gas effects reduce the size of the shock-induced separation bubble and the magnitude of the surface heating rates. Type-IV shock-shock interference heating flows with real gas effects are inherently unsteady to a degree related to the location of the jet impingement on the cylinder relative to the stagnation point. For certain impingement positions, vortices are generated and shed off near the jet impingement point. (Author)

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mentioning

confidence: 99%

Unsteady shock-wave reflection and interaction in viscous flow with thermal and chemical nonequilibrium

Furumoto

Zhong

Skiba

1996

34th Aerospace Sciences Meeting and Exhibit

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show abstract

“…In two dimensions the present pseudo finite volume fornmlations can be made 'truly' finite volume by a slight modification of equations (14)- (16) 29,30] for the inviscid flow and as in reference [21] for the viscous flows. Studies [31] showed that proper treatment of numerical boundary conditions has a major impact on the stability and convergence rate of the scheme.…”

Section: General Assumptions and Limitations On The Numerical Studiesmentioning

confidence: 99%

High-resolution shock-capturing schemes for inviscid and viscous hypersonic flows

Yee

Klopfer

Montagne

1990

Journal of Computational Physics

138

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“…The surface pressure distributions for the last three instances compared with the steady-state case are given in figure 3. The first three surface pressure distributions are not given here and are sinlilar to the steady case [4]. The most critical condition in terms of surface pressures no longer seems to occur for the Type IV shock interaction, as it does for the steady state case.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…The interaction causes Complicated shock-on-shock patterns in steady flows. Such steady interactions were studied in [4]. However, even under steady cruise conditions the vehicle bow shock fluctuates about some mean position, and thus the interaction is unsteady.…”

Section: The Physical Problemmentioning

confidence: 99%

“…Such flows are of current interest in hypersonic aerodynamics. In a previous study [4] the steady viscous hypersonic blunt body flows with impinging shock waves were investigated. Some numerical simulations by other numerical methods for steady blunt body flows with impinging shocks have been reported in [5-81. Very little work has been done for viscous unsteady shock interaction flows at hypersonic speeds, in particular, numerical simulations by implicit methods.…”

Section: Introductionmentioning

confidence: 99%

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Numerical study of unsteady viscous hypersonic blunt body flows with an impinging shock

Klopfer

Yee

Kutler

11th International Conference on Numerical Methods in Fluid Dynamics

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Viscous hypersonic shock-on-shock interaction on blunt cowl lips

Cited by 69 publications

References 1 publication

Unsteady shock-wave reflection and interaction in viscous flow with thermal and chemical nonequilibrium

Unsteady shock-wave reflection and interaction in viscous flow with thermal and chemical nonequilibrium

High-resolution shock-capturing schemes for inviscid and viscous hypersonic flows

Numerical study of unsteady viscous hypersonic blunt body flows with an impinging shock

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