FIELD: engines and pumps.
SUBSTANCE: invention aims at reducing pulsation of low-speed flow in the tunnel operating section. Proposed tunnel comprises inlet contractor with prechamber, set of anti-turbulence screens, tapered nozzle, operating section and anti-turbulence elements. The latter represent means designed to kill vortex structures are arranged in outer turbulence boundary layer between tunnel operating section beginning and tested object location.
EFFECT: ruling out effects of alternating outer boundary of turbulence layer on intensity of flow pulsations in vortex core.
2 dwg
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