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자료유형
학술대회자료
저자정보
정희윤 (한국항공우주연구원) 이동호 (한국항공우주연구원) 강영석 (한국항공우주연구원)
저널정보
한국유체기계학회 한국유체기계학회 학술대회 논문집 2020년 한국유체기계학회 하계학술대회
발행연도
2020.8
수록면
155 - 162 (8page)

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Turbojet type micro gas turbine engine has been widely adopted for an aero-propulsion system of small sized aircraft due to its simplicity and prominent thrust-to-weight ratio. The number of applications using micro gas turbine engine continues to grow with the development of various type in aerial vehicles. To adopt an appropriate micro gas turbine engine for a specific aero application, an evaluation of the engine performance is very important. A thermodynamic cycle analysis is an usual method for the gas turbine engine performance evaluation. Establishing the thermodynamic cycle model of turbojet engine is relatively simple and simulation time the shortest compared to other methods. However, details of engine characteristics would not be captured with the cycle model and the result might be incorrect if analysis condition were apart from component’s operational range. These deficiencies could be compensated by taking advantage of CFD analysis, which is capable of simulating the details of flow characteristics inside engine components such as stall, choke and shock. These flow phenomenons can degrade engine performance or can cause severe engine failure. This paper demonstrates performance analysis of micro gas turbine engine using CFD analysis. Major components in micro gas turbine engine, such as compressor, combustor, turbine and exhaust nozzle, were modeled and linked together to establish entire engine model. Fortran sub-routine was newly developed and embedded to CFD code, which is manipulating the fuel flow into combustor to match compressor and turbine torques. The sub-routine continue to run until it finds matching point of each components at designated rotating speed. Using this CFD model, not only engine cycle performance, but also component performance can be evaluated with a single calculation.

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ABSTRACT
1. 서론
2. 해석 방법
3. 해석결과
4. 결론
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UCI(KEPA) : I410-ECN-0101-2020-554-001309189