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Supersonic gas jets parameters research

Journal: Reporter of the Priazovskyi State Technical University. Section: Technical sciences (Vol.30, No. 1)

Publication Date:

Authors : ;

Page : 192-202

Keywords : a tuyere; nozzle; supersonic flow; ejection; additional mass; hitting range;

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Abstract

The influences of regime parameters (total pressure differential, surplus impulse, consumption etc.) on change of the blowing stream characteristics (hitting range of the jet joined to the gas mass jet from the surrounding medium, etc.) in discharge conditions without acoustic feedback through the nozzles with different Mach num-bers, the generatrix and the widening nozzle axis forming an angle have been analyzed. The corresponding dependencies for submerged (isothermal) jets have been received which practically coincide with the experimental data. The regimes undesirable for blowing have been shown. These results and the analyses of the parameters of the supersonic jet as a function of the melting blowing regime refers to the jet penetrating the liquid with the difference that it is necessary to take into account such additional factors as the gas composition and temperature of the gases surrounding the jet, opposite streams of gases, the availability of the second phase, and so on. The received results must be taken into account in designing, improving and operating blowing devices and burners. The received dependences to define the hitting range, additional mass, the jet section diameter on various factors, that is discharge parameters, blowing devices design and others can be used in choosing the peculiarities of the nozzle design in blowing devices and blowing regimes optimizatio

Last modified: 2015-11-26 21:49:13