Because the hydrogen can significantly improve the arc voltage, make hydrogen plasma jet has high enthalpy, when mixed with argon plasma jet, the use of cutting ability is greatly increased.
After the study, further recongniztion are done to flow characteristics of high enthalpy free piston shock wave wind tunnel.
“The facility is to provide high enthalpy [thermal dynamic] model scramjet testing,” he says.
This experiment technology are adapt for high enthalpy free piston shock wave wind tunnel and makes a foundation for carrying out high enthalpy real gas effect experiment.
This paper proposes the method of hypersonic flow field display with high enthalpy gas self luminosity and introduces some primary results employing this method in the high enthalpy shock tunnel for the hypersonic flow fields over a2 dimension model.
The results show that the pressure value measured at plate probe is much higher than that of free steam in high enthalpy shock tunnel test section.
It is necessary to simulate the high enthalpy, high pressure, Mach number and the same concentration of oxygen species as air in hypersonic flight.
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