Abstract
It is experimentally established that the pressure at the central point of an obstacle oriented perpendicular to the axis of a gas flow emerging from a channel increases when a fluid nozzle formed by the moving primary (head) and secondary vortices reaches the obstacle surface. This phenomenon has been observed in air-flow at a distance of ∼1–4 channel diameters behind the shock wave in the range of subsonic Mach numbers. The obtained experimental data are generalized in the form of dimensionless relationships.
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