Interaction of a shock wave with a turbulent air flow is investigated. A grid-generated turbulence was used. The shock wave propagates in a shock tube, reflects from a perforated disc and then interacts with the turbulent flow. The Mach numbers were equal to 1.9-4.0 for the incident shocks and to 1.6-2.5 for the reflected ones. The correlation functions for pressure fluctuations and for density fluctuations were determined. The turbulent length scale behind the incident shock was found. The length scale decreases behind the reflected shock and is of an order as small as its value ahead of the shock. The pressure behind the reflected shock is found to be 10% as large as the appropriate value in the laminar flow under the same conditions.
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