Using the phenomenon of electrical conduction of flame of non-homogeneous air-fuel mixture in design and development of combustion chamber

Abstract


The use of ionization sensors for the study and diagnosis of the combustion process in gas-turbine power plants is substantiated in the paper. The review of literature data and in-house research show that thermionic emission of electrons from incandescent carbon particles plays a decisive role in the mechanism of ionization of flame sprayed in a stream of liquid hydrocarbon fuels. It is shown that as liquid fuel is injected into the circulation area of a bluff body the area of maximum concentration of electrons that determine the conduction current is located in the circulation area. When liquid fuel is injected in the flame holder the zone of maximum electron density is located in the zone between the recirculation mixing zone and the slipstream. It was found experimentally that the distance between the region of maximum electron density and the stabilizer base is determined by the quantity of the fuel sprayed, the initial temperature, the flow turbulence and the gas flow rate. The results can be used to predict and monitor the characteristics of turbulent flame in combustion chambers of power plants with the help of ionization sensors. They also make it possible to create a system of continuous monitoring and control of ignition and combustion processes ensuring minimum concentration of toxic emissions in the exhaust combustion products.


About the authors

A. P. Shajkin

Togliatti State University

Author for correspondence.
Email: td@tltsu.ru

Russian Federation

Doctor of Science (Engineering)
Professor of the Department of Energy-Converting Machinery and Control Systems

P. V. Ivashin

Togliatti State University

Email: td@tltsu.ru

Russian Federation

Candidate of Science (Engineering)
Assistant Professor of the Department of Energy-Converting Machinery and Control Systems

I. R. Galiev

Togliatti State University

Email: sbs777@yandex.ru

Russian Federation

Candidate of Science (Engineering)
Assistant Professor of the Department of Design and Operation of Vehicles

A. D. Derjachev

Togliatti State University

Email: proscripts@mail.ru

Russian Federation

Candidate of Science (Engineering)
junior researcher

A. J. Tverdohljobov

Togliatti State University

Email: sarc@bk.ru

Russian Federation

junior researcher

References

  1. Reznik V.E., Tokarev V.V., Shaikin A.P. Electroconductivity of nonuniform-mixture flame plume with liquid fuel injection into circulation zone behind a bluff body. Soviet Aero-nautics (English translation of Izvestiya VUZ, Aviatsionnaya Tekhnika). 1977. V. 20, Iss. 3. Р. 70-73.

Statistics

Views

Abstract - 62

PDF (Russian) - 32

Article Metrics

Metrics Loading ...

PlumX

Dimensions

Refbacks

  • There are currently no refbacks.

Copyright (c) 2016 VESTNIK of Samara University. Aerospace and Mechanical Engineering

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies