[PDF] Top 20 Compression Ramp Induced Shock Wave/Turbulent Boundary Layer Interactions on a Compliant Material.

... unsteady shock wave incident on a soft compliant ...such interactions range from dampening panel and control sur- face loading, reducing aerodynamic drag, and minimizing aeroacoustic fatigue ... See full document

... of shock-wave / turbulent boundary layer interactions (SWTBLIs) is frequently encountered on the surfaces of aeronautical/aerospace devices like air intake compression ... See full document

... pression ramp interactions were used as surrogates for the impinging/reflected SBLIs present in isolator shock ...the shock strength/compression ramp angle on the unsteady wall ... See full document

... inviscid shock maintains its strength all the way to the boundary layer edge at x = 10 mm (figure ...a shock spanwise location of z = ...overall compression was nearly identical to the ... See full document

... Simulations based on Navier-Stokes equations are now widely used in the determination of optimum performance evaluations and in arriving at optimum configurations. The supersonic reacting flow field over the ... See full document

... mental part was located at a distance of 6.0 m from the rectifying lattices. In order to shape the flat laminar boundary layer (LBL), a polished steel plate with sharp edges was used. The upper part of the ... See full document

... and compliant-wall velocity modes to study the impact of the compliant ...the compliant- wall boundary condition, namely a virtual wall ...critical layer mechanism and with the ... See full document

... The CRM was simulated at higher incidences to evaluate the development of shock-induced boundary layer separation at off-design flight conditions. In the previous section, it was found that ... See full document

... the near-bottom flow. During the southerly wind event, which was of short duration, subtidal flows were too weak to result in significant sediment transport. As a result, the sediment transport that could have ... See full document

... sandpaper-roughness boundary layer, well outside the roughness ...outer layer of the boundary ...the boundary layer with a scale on the order of δ when the spanwise spacing is ... See full document

... however, is mainly on the laminar flow case but some turbulent flow results will be discussed. The instabilities which arise when a plane channel is subjected to rotation about a spanwise axis differ in a number ... See full document

... Fig. 3.2: Simplified sketch of a typical ramjet inlet at design Mach number, without depicted expansions and shock reflections. The inlet is comprised of 3 parts: a supersonic diffuser section between positions 0  ... See full document

... Shock wave boundary layer interactions at compression ramps have been examined by high-speed ...the ramp angle effect on the SWBLI is thus ...the shock wave ... See full document

... The experimental investigation was undertaken at the Turbulent Shear Flow Laboratory at the North Carolina State University. This facility is a blow down type variable Mach number wind tunnel with a Mach number ... See full document

... reacting layer is developed within the boundary ...the shock layer exceeded 6600K and gas temperatures behind the leading bow shock reached 11000K ... See full document

... mesh layer on the plate and wall was less than 1. Apart from the boundary layer region, mesh nodes were clustered in vicinities of the expansion corner and shock ... See full document

... TITLE PAGE 2.1 Figure of Ahmed model 5 2.2 Boundary layer velocity gradient 10 2.3 Lamina/turbulent boundary layer transition 12 Low speed 2.4 Lamina/turbulent boundary layer transition [r] ... See full document

... both the fundamental and the harmonic modes, i s in accord with the relative variations observed experimen- tally and h a s been considered a s " abnormal" in view of the linear stability theory. However, no ... See full document

... characteristic-based boundary con- dition is used in order to minimize any reflected ...impinging shock wave, while downstream of the im- pinging shock location the upper boundary ... See full document

... laminar boundary layer instabilities, where a thin vibrating ribbon along the spanwise direction was placed very near the wall to introduce controlled oscillations in the ...a turbulent channel flow ... See full document