METHOD OF GENERATING GAS FLOW IN WORKING SECTION OF WIND TUNNEL AND WIND TUNNEL Russian patent published in 2012 - IPC G01M9/02 

FIELD: physics.

SUBSTANCE: disclosed is a method of generating gas flow in the working section of a wind tunnel and a wind tunnel, in which a compressor rotates through a jet of liquefied gas and (or) cold high-pressure gas obtained from a condensate, flowing from jet nozzles installed on the rotor of the compressor, and (or) from hollow blades of the compressor, which enables to considerably lower temperature of the gas after the compressor compared to existing methods. Excess gas from the wind tunnel is first directed into pressure-reducing-generating unit, where electrical energy is generated and gas is cooled through its expansion in the turbine, and the gas is further cooled when it flows into a vacuum chamber and liquefied on cryopanels installed therein, which are first cooled (between launches into the wind tunnel) by a cooling machine to temperature lower than the condensation temperature of the gas used. The cryopanels are made from porous metal and have pore surface area per unit mass which is two or three orders higher than that of cryopanels made from solid metal. The liquefaction intensity is proportional to the surface area of the contact of the gas with the surface of the cooled cryopanel. Hence a small cooling apparatus can efficiently cool large portions of gas over a short period of time. The liquefied gas is collected in a reservoir and used to rotate the compressor.

EFFECT: reduced loss of energy when generating gas flow, increased uniformity of flow in the working section.

5 cl, 4 dwg