Studying torch parameters behind the atomizer with jet and swirled fuel feeding


DOI: 10.34759/trd-2020-113-03

Аuthors

Baklanov A. V.*, Krasnov D. S.**, Garaev A. I.***

Kazan National Research Technical University named after A.N. Tupolev, 10, Karl Marks str., Kazan, 420111, Russia

*e-mail: andreybaklanov@bk.ru
**e-mail: dima-krasnov-09@mail.ru
***e-mail: almazsdf@mail.ru

Abstract

The discharges level of deleterious contaminants concentration in combustion products is one of the basic parameters, characterizing the combustion process effectiveness in combustion chambers.

The article being presented considers the impact of fuel feeding technique, realized in the atomizer, on the above said parameter variation. One of the considered atomizers ensures jet feeding of the fuel with the perforated atomizer, while the other one ensures swirled fuel feeding by the swirler integrated into the fuel passage. Basic geometrics of the atomizers, such as swirler sizes, the number of blades and the outlet nozzle diameter, are presented as well.

The flame tube simulator design, in which the tested atomizer is being placed, is regarded. The article presents the test bench installation designed for the atomizers testing in the flame tube simulator, as well as modes at which these tests were conducted. The results were obtained in the flame tube simulator with installed jet atomizers and atomizers with the swirled fuel jet. The analysis, by which results the inferences on the jet atomizers application efficiency were drawn, was performed. According to the performed studies, parameters of the atomizer with swirled fuel jet are being characterized by the presence of high values of CO and CH level in the combustion products, which is explained by the low mixing quality of fuel with air and, consequently, extremely low effectiveness of the fuel combustion. The atomizer with jet fuel feeding demonstrates low CO and CH values, which is indicative of the good quality of fuel mixing with air and high efficiency of combustion process organizing.

Keywords:

combustion chamber, gas turbine engine, atomizer

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