폐음향 경계조건을 갖는 가스터빈 연소기의 연소불안정 해석

다국어 초록 (Multilingual Abstract)

Combustion instability is a major issue in design of gas turbine combustors for efficient operation with low emissions. Combustion instability is induced by the interaction of the unsteady heat release of the combustion process and the change in the acoustic pressure in the combustion chamber. In an effort to develop a technique to predict self-excited combustion instability of gas turbine combustors, a new stability analysis method based on the transfer matrix method is developed. The method views the combustion system as a one-dimensional acoustic system with a side branch and describes the heat source as the input to the system. This approach makes it possible to use not only the advantages of the transfer matrix method but also well established classic control theories. The approach is applied to a gas turbine combustion system, which shows the validity and effectiveness of the approach.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 파동방정식에 의한 시스템 표현
• 3. 두 기존 해법
• 4. 전달매트릭스법
• 5. 사례연구 및 논의
• 6. 결언
• 후기
• 참고문헌

참고문헌 (Reference)

1 Richards, G. A, "Passive control of combustion dynamics in stationary gas turbines" 19 (19): 795-810, 2003

2 Phillips, C. L, "Feedback Control Systems, 4th ed."

3 Kadam, P, "Experimental formulation of four poles of three-dimensional cavities" 307 : 578-590, 2007

4 Kim, J, "Development of general procedure to formulate four pole parameters by modal expansion and its application to three dimensional cavities" 112 : 452-459, 1990

5 Culick, F. E. C, "Combustion instabilities in liquid-fueled propulsion systems-an overview" (450) : 1989

6 차동진, "Analysis of the combustion instability of a model gas turbine combustor by the transfer matrix method" 대한기계학회 23 (23): 1602-1612, 2009

7 Munjal, M. L, "Acoustics of Ducts and Mufflers"

8 Dowling, P. E, "Acoustic analysis of gas turbine combustors" 19 (19): 751-764, 2003