Abstract
This study considers a method of air flow cooling in closed-circuit wind tunnels by means of constant exhaust of a part of warm air and its change for colder outside air. The proposed options of air exchange arrangement for T-204 subsonic wind tunnel designed in TsAGI are designated for work in full power conditions in a closed test section at w=160 m/s provided that the ambient air temperature is Tf=20°C. The work delivers the results of air flow numerical study in wind tunnel duct parts in presence of air exchange holes.
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