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논문 기본 정보

자료유형
학술대회자료
저자정보
신현태 (한국과학기술연구원) 안형준 (한국과학기술연구원) 최상민 (한국과학기술연구원) 최훈기 (창원대학교)
저널정보
한국연소학회 KOSCO SYMPOSIUM 논문집 2010년도 한국연소학회 제40회 춘계학술대회 KOSCO SYMPOSIUM 논문집
발행연도
2010.6
수록면
269 - 275 (7page)

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초록· 키워드

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In this study, both a numerical simulation and an experimental study were conducted in order to analyze the flow pattern in the transition zone of the vertical type HRSG prototype power plant. The swirl angle of gas turbine exhaust gas is one of the major factors that governs the flow characteristic in the HRSG, so two different swirl angles were set up to simulate possibly varying operating conditions of the prototype power plant according to the gas turbine load change. In the numerical simulation was done with the commercial CFD code of Fluent version 6.2. The RNG k-ε turbulence model was chosen to simulate the case. To simulate the tube zone, porous media was adopted to calculate the pressure drop and heat transfer in the tube zone. Fan swirl velocity modeling employed to express the swirl flow from the gas turbine. Root mean square (RMS) is selected as a parameter to evaluate the uniformity of the flow. In the experimental study, two 1/20 scale down flow modeling tests were conducted. 2-D water table model was conducted for visualization of flow pattern in transition zone. 3-D wind tunnel model was used for measuring velocity focused on flow uniformity. For simplicity, tube zone area was modeled by a lattice block whose pressure coefficient was similarly calculated from that of the prototype tube banks. Velocity distribution at test sections was measured by using a pitot tube and a manometer so that the uniformity of the flow was estimated by calculating RMS average and RMS deviation.

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ABSTRACT
1. 서론
2. 전산해석 및 모형실험
3. 결과 및 고찰
4. 결론
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UCI(KEPA) : I410-ECN-0101-2010-431-002483412