Research of mixture of fuel with air in nozzles with the jet and twirled fuel supply

Аuthors

Baklanov A. V.

Kazan Motor Production Association, 1, Dementyeva str., Kazan, 420036, Russia

e-mail: andreybaklanov@bk.ru

Abstract

Mixture of gaseous fuel with air is key parameter. It defines efficiency of combustion of mix of fuel and air in the combustion chamber of the gas-turbine engine. In this article influence of a way of supply of fuel on processes of mixture in the twirled stream is considered. Two nozzles were investigated. The first nozzle, contains a swirler. Shovels are established at an angle 45 degrees. The nozzle also contains the mixing plug. The nozzle case the containing internal channel in which the jet spray is installed. The second nozzle differs from the first in the fact that the screw is installed in the internal channel of the case of a nozzle. It gives the twirled fuel stream to the mixing plug bench installation which is intended for test of nozzles Is presented. Tests are carried out by definition of mixture of fuel with air. As imitation of fuel gas CO2 carbon dioxide is used. Basic data for carrying out tests are given. Measurements of CO2 in streams of a torch are directed to definition of the field of concentration. It allows to track the rate of change of concentration along a stream axis.
For representation of intensity of process of mixture characteristics of CO2 = are provided by f(r). They display change of concentration on stream section at the exit from nozzles.
Results of mixture of fuel with air of two nozzles are received. The analysis by results of which conclusions are drawn on the mechanism of mixture of a nozzle with the jet spray and nozzles with the centrifugal spray is carried out.

Keywords:

combustion chamber, gas turbine engine, injector, fuel, mixing

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