Low Reynolds number flow past a transverse cylinder at Mach two.

Experimental investigation on compressible flow over a circular cylinder at Reynolds number of between 1000 and 5000

“…Map of the conditions investigated in the previous studies. Lindsey (1938): exp., drag measurement; Knowler & Pruden (1944): exp., drag and pressure measurement; Gowen & Perkins (1953): exp., drag and pressure measurement, shadowgraph; McCarthy & Kubota (1964): exp., pitot-pressure, static pressure and total temperature measurements, schlieren; Kitchens & Bush (1972): exp., hot-wire measurement, shadowgraph; Murthy & Rose (1977): exp., pressure and skin friction measurement; Dyment & Gryson (1979): exp., shadowgraph and schlieren; Rodriguez (1984): exp., shadowgraph and unsteady pressure measurement; Xu et al 2009 been investigated is interesting from the point of view of the physics of fluids, and it contributes to extending the knowledge of fluid mechanics. In the present study, we investigated the compressible low-Re flows over a circular cylinder at Re = O(10 3 ) and 0.1 M 0.5 using a low-density wind tunnel and examined the influence of M and Re on the fundamental characteristics of the flow field, such as flow patterns, the wake structure, St of vortex shedding, the pressure coefficient distributions and the drag force coefficient.…”

Compressibility effects on the secondary instabilities of the circular cylinder wake

“…Previous studies on compressibility effects on the flow around a circular cylinder have focused on Reynolds numbers of order in subsonic and transonic regimes (Lindsey 1938; Gowen & Perkins 1953; Murthy & Rose 1977; Rodriguez 1984; Xu, Chen & Lu 2009; Xia et al. 2016) and in the supersonic regime (Gowen & Perkins 1953; McCarthy & Kubota 1964; Kitchens & Bush 1972), while recent experimental (Nagata et al. 2020) and numerical (Canuto & Taira 2015) studies have analysed the effect of compressibility in the subsonic regime at even lower Reynolds numbers, and , respectively.…”