[PDF] Top 20 Flow instability in shock tube due to shock wave-boundary layer-contact surface interactions, a numerical study

... the shock tube and to note how its use has ...first shock tube by Vieille in France in 1899 ...on shock tube has been carried out in the 1940s in the United States and Canada, ... See full document

... the flow prop- erties were averaged during a period of 5 ...steady flow whereas by considering the tunnel upper and lower walls the self- sustained shock motion was obtained for that ...the ... See full document

... undisturbed boundary layer attached to the bottom wall and surface of the fin, where the turbulent structures are the classic quasi-streamwise horseshoe vortex attached to the wall 40 ...mixing ... See full document

... the flow control optimization of shock wave boundary layer interactiosn governed by the three dimensional Navier-Stokes ...minimizing flow distortion and maximizing total ... See full document

... oblique shock-wave generated by an 8 ° sharp wedge impinging onto a spatially-developing Mach ...turbulent boundary layer and their interactions has been carried out in this ...incoming ... See full document

... rigid surface and a compliant surface, could be enough to negate any beneficial FSI ...his study that the positive effects were only possible with proper selection of the flexible surface ... See full document

... reflected shock foot, which is thought to be the critical point of the reflected shock instability, and therefore most responsive to ...incoming boundary layer data; just upstream of ... See full document

... amplitude shock oscillations, with its onset occurring after a sufficient reduction of inlet mass ...buzz due to the effective blocking of the inlet from separation along the compression ramp surface ... See full document

... in shock wave turbulent boundary layer ...the surface heat flux unsteady characteristic of incident shock wave and turbulent boundary layer ... See full document

... The study of the linear stability for open and highly non-parallel flows was performed for the first time by Jackson (1987) and Zebib (1987) around a cylinder in incompressible ...swept flow around a ... See full document

... Abstract- Numerical solution is a cost effective alternative in various parametric studies including fluid dynamics ...The interactions of a shock wave produced by the compression ramp on a ... See full document

... time-averaged surface-streamline patterns on the tunnel floor and ...the surface flow topology. While the oil mixture follows the surface streamlines well and represents the flow ... See full document

... grid study is conducted by varying this base size as a multiplier of the the plate length to determine any requirements on mesh size to obtain a grid independent ...this study are covered in Section ... See full document

... bow shock stand-off distance appears to have been calculated ...However, flow separation occurred too far upstream, and thus induced a higher triple ...trailing shock foot for all turbulence model ... See full document

... Strong interactions of shock waves with boundary layers lead to flow separations and enhanced heat transfer ...approaching boundary layer is hypersonic and transitional the ... See full document

... the boundary layer from the free stream value at the outer edge to zero at the ...the surface of the cylinder) show only a minor change in axial ...the layer in contact with the wall ... See full document

... the shock wave, the nonlinear coupling of turbulence, vorticity and entropy waves and the unsteady shock-wave pumping ...shear layer in the SWTBLI is similar to the plane mixing ... See full document

... numbers (figure 8) for the coarse mesh. The lowest peak imbalance in the sum of the budget for the smallest Reynolds number was indicative of the fact that the coarse mesh was sufficiently resolved. But for the higher ... See full document

... mean flow level longitudinal streamwise vortices that induce low-speed regions downstream of vertex locations and high-speed regions at intermediate spanwise ...the boundary layer, which consist of ... See full document

... to study the linear, non-parallel stability characteristics of the modified basic state corresponding to the sum of the flat-plate boundary layer and the finite-amplitude optimal ...supersonic ... See full document