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http://dx.doi.org/10.15231/jksc.2014.19.4.008

Numerical Study on Flow Distribution of Fuel Nozzles for a Combustor in a Micro Gas Turbine  

Kim, Taehoon (Department of Plant Safety Technology, Korea Institute of Machinery and Materials (KIMM))
Do, Kyu Hyung (Department of Plant Safety Technology, Korea Institute of Machinery and Materials (KIMM))
Han, Yong-Shik (Department of Plant Safety Technology, Korea Institute of Machinery and Materials (KIMM))
Kim, Myungbae (Department of Plant Safety Technology, Korea Institute of Machinery and Materials (KIMM))
Choi, Byung-Il (Department of Plant Safety Technology, Korea Institute of Machinery and Materials (KIMM))
Publication Information
Journal of the Korean Society of Combustion / v.19, no.4, 2014 , pp. 8-13 More about this Journal
Abstract
Flow distribution of fuel nozzles for a combustor in a micro gas turbine is numerically investigated. The fuel supply system for the present study has 12 single nozzles with a diameter of several hundred micrometers. A uniform temperature distribution of a combustor outlet should be achieved for maximizing the lives of the turbine blades and nozzle guide vanes. For this, it is very important to uniformly supply fuel to a combustor. In order to investigate flow distributions of fuel nozzles, numerical models for fuel nozzles are made and solved by a commercial code, ANSYS FLUENT. An effect of a fuel nozzle diameter and fuel flow rates on flow distribution of fuel nozzles is numerically investigated. As a result, non-uniformity is increasing as a diameter of a single fuel nozzle increases. Finally, an appropriate diameter of a single fuel nozzle is suggested.
Keywords
Gas turbine; Combustor; Fuel nozzles; Flow distribution;
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