비정렬 유입 유동을 가지는 고 레이놀즈 수 조건 하 유동 균일도 향상을 위한 벨마우스의 형상 최적화 (Shape Optimization of the Bellmouth to Improve Flow Uniformity under High Reynolds Number with Non-aligned Inflow)

서지정보

· 발행기관 : 한국유체기계학회
· 수록지 정보 : 한국유체기계학회 논문집 / 25권 / 1호 / 26 ~ 35페이지
· 저자명 : 이남경, 이준석, 양재성, 허정훈, 민준기

초록

An optimized bellmouth shape of gas turbine casing with inlet reynolds number 50000 has been studied by using Computational Fluid Dynamics (CFD) procedure. The three dimensional governing equations of continuity, momentum in steady state and compressible condition are solved. Design variables for bellmouth shape optimization are inner radius, outer radius, height, and angle. From full factorial 81 case study, the fitted objective functions about reducing pressure drop and increasing uniformity in vane were found. The response surface for objective functions is introduced based on the relationship between 4 types of design variables. An increase of bellmouth inner diameter causes smaller pressure drop and low uniformity. By overlaid contour method, optimized shape of a bellmouth in gas turbine casing is introduced. Detailed results and discussions are quantitatively summarized.

영어초록

An optimized bellmouth shape of gas turbine casing with inlet reynolds number 50000 has been studied by using Computational Fluid Dynamics (CFD) procedure. The three dimensional governing equations of continuity, momentum in steady state and compressible condition are solved. Design variables for bellmouth shape optimization are inner radius, outer radius, height, and angle. From full factorial 81 case study, the fitted objective functions about reducing pressure drop and increasing uniformity in vane were found. The response surface for objective functions is introduced based on the relationship between 4 types of design variables. An increase of bellmouth inner diameter causes smaller pressure drop and low uniformity. By overlaid contour method, optimized shape of a bellmouth in gas turbine casing is introduced. Detailed results and discussions are quantitatively summarized.

참고자료

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