Dynamic structure of confined shocks undergoing sudden expansion

Shock wave diffraction in the presence of a supersonic co-flow jet

“…It is interpreted as the separation of the boundary layer attached to the upstream wall, and thus makes a discontinuity in the tangential velocity [9]. Large gradients in density were experimentally observed by Abate & Shyy [10] in the region occupied by the slipstream and the vortex, which is more turbulent and wider for smaller corner angles.…”

Compressible Flow Structures Interaction with a Two-Dimensional Ejector: A Cold-Flow Study

“…54 The reflected shock waves from the upper 10 and lower walls of the ejector interact with the two vortex cores and their propagation is altered, an observation consistent with Ellzey et al 55 Focusing on the lower vortex core which is rotating clockwise, we notice that the portion of the reflected shock wave to the right of the core travels more slowly; at the same time the portion of the reflected shock to the left of the core, which has just been reflected from the underside of the nozzle is also slowed down. The shock wave splitting phenomenon produces secondary shock waves which add to the complexity of our already intricate flow.…”

“…These are formed once the fluid through the uniform area section encounters the area change and begins to form a 'starting jet'. 54 The formation of the starting jet gives rise to these vortices generated due to the formation of a shear layer between emerging and external fluids. This is best illustrated in …”

Numerical simulation of shock wave diffraction over right angle on unstructured meshes

“…Плоские и осесимметричные течения, возникающие при распространении ударной волны в плос-ком и круглом канале с внезапным расширением, рассматриваются в работе [24] на основе данных физи-ческого и численного эксперимента. Генерация завихренности обусловливается тем, что градиенты дав-ления и плотности в области отрыва потока оказываются непараллельными [25].…”