Study on kerosene atomization process under a high speed air stream

• Autorzy: Perkowski W. , Irzycki A. , Snopkiewicz K. , Grudzień Ł. , Kawalec M.
• Języki publikacji: EN

Abstrakty

EN

For the needs of fuel-injection system development for the experimental detonation combustion chamber with a rotating detonation (PoiG - Project: "Turbine engine with detonation combustion chamber") a series of experiments with injection of kerosene under a high speed air stream was performed at the Institute of Aviation. The proper preparation of combustible mixture is very important for the initiation and sustenance of a rotating detonation. The task in case of kerosene-air mixture is far more difficult than for mixtures of hydrogen-air or kerosene-oxygen. A simple stream injector has been tested as a base system, and the kerosene was injected perpendicular to the air stream vector directly from the plane wall of the constant cross-section channel. The process of injection and atomization of kerosene was observed in the special transparent visualization chamber, enabling the spray observation of two mutually perpendicular directions. In subsequent experiments air pressure, air temperature and air flow velocity as well as and injection pressure of kerosene were varied. The tested process was photographed and, in case of chosen experiments, filmed using a high-speed digital camera. The surveys were aimed at identifying and assessing of following parameters of fuel atomization process: the range of the fuel stream and filling grade of research channel with aerosol, aerosol homogeneity and the size of forming it droplets, the possible presence of fuel streams flowing down the walls of channel. The resulting photos allowed for more comprehensive, but only a qualitative assess of the spraying process, while the filmed small regions of visualization chamber allowed the counting down and dimensioning of droplets. This paper presents a test facility and measuring techniques applied during the research activity and selected results of carried out tests.

Słowa kluczowe

EN

transport; aircraft engine; combustion chamber; fuel atomization

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2011
• Tom: Vol. 18, No. 4
• Strony: 341--347
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Perkowski W.

autor

Irzycki A.

autor

Snopkiewicz K.

autor

Grudzień Ł.

autor

Kawalec M.

• Institute of Aviation Krakowska Av. 110/114, 02-256 Warszawa tel.: [phone] w 373, fax: [phone],

Bibliografia

• [1] Konieczny, A., Orkisz, M., Theoretical evaluation influence selected geometrical and feed parameters on velocity flow o fair inside aeral injector and directions for form of fuel air mixture, Journal of KONES, Vol. 10, No. 3-4, 2003.
• [2] Wierzba, A., Deformation and breakup of liquid drops in a gas stream nearly critical Weber numbers, Experiments in Fluids, Springer - Verlag 1990.
• [3] Khavkin, Y., The theory and practice of swirl atomizers, Taylor&Francis 2004.
• [4] Ragucci, R., Bellafiore, A., Cavaliere, A., Breakup and breakdown of bent kerosene jets in gas turbine conditions, Proceedings of the Combustion Institute, Vol. 31, Naples 2007.
• [5] Armendariz, A., Leith, D., Concentration measurement and counting efficiency for the aerodynamic particle sizer 3320, Journal of Aerosol Science, Vol. 33, 2002.
• [6] Jet A/Jet A-1, Environment Canada, Emergencies Science and Technology (bulletin, data from Shell), 1999.