Nonsteady supersonic flow over spiked bodies

Experimental investigation of nonstationary flow in cavities in a supersonic flow

“…The data for h~o = 6 are taken from [4] and were obtained for T0/T w = 1.7. The values of G~ for points 1 and 2 were measured at T0/T w = 1.…”

“…Flow visualization was also employed~ To establish the pulsation frequency of the shock wave and compression waves, we used disk scanning [4], the slit being set up on the cylinder axis.…”

Aerothermodynamics of Spiked Bodies: Part I

“…However, in the Russian literature for some years later, oscillation and pulsation modes were termed as pulsation of the first kind and pulsation of the second kind, respectively. For instance, Antonov and his co-researchers conducted a number of experimental investigations on unsteady flow around spiked models [61,[62][63][64]. In [61], they investigated the flow around a spiked flat cylindrical model in a Mach 6, Reynolds 6 10 1 freestream.…”

“…In addition, Panaras [66,67] independently proposed the same conclusions as Antonov et al and proposed the same description and explanations. The cause of pulsation as explained by Antonov et al [64] and Kenworthy [65] is different and more comprehensive than that was first proposed by Mair [36] and prevailed in the later studies. In fact, the two explanations are based on the feeding or air from an external source.…”

“…A landmark study was conducted by Antonov et al [64], in which they implemented the same freestream conditions and used the same models of their previous studies. In this work, they managed to capture the evolution of pulsation flow mode for the first time and determined its cycle, mechanism, and cause based on scientific evidence.…”