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First Thermal and Fluids Engineering Summer Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

FLOW DISTRIBUTION OF FUEL NOZZLES FOR A COMBUSTOR IN A MICRO GAS TURBINE

DOI: 10.1615/TFESC1.fnd.012715
pages 1001-1009

Tae Hoon Kim
Korea Institute of Machinery and Materials (KIMM), Daejeon 305-343, Republic of Korea; Korea University of Science and Technology (UST), Daejeon 305-350, Republic of Korea

Kyu Hyung Do
Korea Institute of Machinery and Materials (KIMM), Daejeon 305-343, Republic of Korea; Korea University of Science and Technology (UST), Daejeon 305-350, Republic of Korea

Yong-Shik Han
Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials, Republic of Korea

Byung-ll Choi
Korea Institute of Machinery and Materials (KIMM), Daejeon 305-343, Republic of Korea; Korea University of Science and Technology (UST), Daejeon 305-350, Republic of Korea

Myung-Bae Kim
Korea Institute of Machinery and Materials (KIMM), Daejeon 305-343, Republic of Korea; Korea University of Science and Technology (UST), Daejeon 305-350, Republic of Korea


KEY WORDS: Gas turbine, Combustor, Fuel nozzles, Flow distribution

Abstract

Flow distribution of fuel nozzles for a combustor in a micro 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 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.

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