지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한기계학회 Journal of Mechanical Science and Technology Journal of Mechanical Science and Technology Vol.22 No.1
- 발행연도
- 2008.1
- 수록면
- 166 - 170 (5page)
이용수
초록· 키워드
오류제보하기
Phenomena such as hard landings or geometric flaws can cause non-axisymmetric tip clearance in turbines. Such geometric imperfections induce flow distortions which can, in turn, cause self-excited vibration of the rotor, or rotordynamic instability. Flow field perturbations in a single-stage, unshrouded impulse turbine caused by non-axisymmetric tip clearance have been investigated experimentally. Steady velocity and pressure data have been acquired at the design point with and without static turbine casing offset. Perturbations in tangential velocity and casing wall pressure have been obtained, and rotordynamic forces along and perpendicular to the axis of offset have been inferred. Compared to an unshrouded 20% reaction turbine, the forces due to tangential force asymmetry are much smaller, but the forces due to pressure asymmetry are comparable.
목차
Abstract
1. Introduction
2. Experimental facility
3. Flow survey results
4. Conclusions
Acknowledgment
References
참고문헌 (10)
참고문헌 신청
E. C. Ek , 1978 , Solution to the Subsynchronous Whirl Problem in the High Pressure Hydrogen Turbo-machinery of the Space Shuttle Main Engines , AIAA, ASME , SAE 14 th Joint Propulsion Confe-rence : 1 ~ 24
H. J. Thomas , 1958 , Unstable Natural Vibrations of Tur-bine Rotors Induced by the Clearance Flows in Glands and Blading , Bull. De. L.A.I.M 71 (11-12)
J. S. Alfords , 1965 , Protecting Turbomachinery from Self-Excited Rotor Whirl , ASME Journal of Engi-neering for Power : 333 ~ 344
K. Urlichs , 1983 , Clearance Flow-Generated Transverse Forces at the Rotors of Thermal Turbomachines
R. Wohlrab , 1983 , Experimental Determination of Gap-Flow Conditioned Forces at Turbine Stages, and Their Effect on the Running Stability of Simple Ro-tors
H. J. Thomas , 1958 , Unstable Natural Vibrations of Tur-bine Rotors Induced by the Clearance Flows in Glands and Blading , Bull. De. L.A.I.M 71 (11-12)
J. S. Alfords , 1965 , Protecting Turbomachinery from Self-Excited Rotor Whirl , ASME Journal of Engi-neering for Power : 333 ~ 344
K. Urlichs , 1983 , Clearance Flow-Generated Transverse Forces at the Rotors of Thermal Turbomachines
R. Wohlrab , 1983 , Experimental Determination of Gap-Flow Conditioned Forces at Turbine Stages, and Their Effect on the Running Stability of Simple Ro-tors
함께 읽어보면 좋을 논문
논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!
-
Inviscid Rotordynamic Damping Forces due to Non-Axisymmetric Tip Clearance in Turbines
International Conference on Fluid Machinery
1997 .10
-
Effect of Impulse Turbine Geometry on the Performance of a Dual-Turbine System for Wave Energy Conversion
International Journal of Fluid Machinery and Systems
2018 .03
-
Cross-Flow Turbine with Axisymmetric Casing for Wave Power Conversion
International Conference on Fluid Machinery
1997 .10
-
Study of Mechanism of Counter-rotating Turbine Increasing Two-Stage Turbine System Efficiency
International Journal of Fluid Machinery and Systems
2013 .09
-
WIND TURBINE AERODYNAMIC ANALYSIS IN NON-AXISYMMETRIC WAKE FLOW
AFORE
2011 .11
-
Study on Through-flow Model for Turbine System Considering Three-dimensional Flow Field Distortion Effect
International Journal of Fluid Machinery and Systems
2018 .12
-
상용 유한요소 해석 프로그램을 이용한 가스터빈 간극 설계의 가시화 방법
한국가시화정보학회지
2019 .04
-
파력발전용 링타입 임펄스터어빈의 성능 해석
한국해양공학회지
2006 .02
-
파력발전용 웰즈터빈의 공력특성에 관한 연구
한국마린엔지니어링학회 학술대회 논문집
2004 .05
-
Rotordynamic Forces due to Turbine Tip Leakage - Theory
한국항공우주학회 학술발표회 초록집
1995 .11
-
축류터빈 동익 내부의 누설유동에 관한 수치해석
동력시스템공학회지
2005 .02
-
진동 수주형 파력 발전을 위한 임펄스 터빈과 웰스 터빈 특성 연구
한국마린엔지니어링학회 학술대회 논문집
2010 .10
-
Rotordynamic Forces due to Turbine Tip Leakage - Experiment
한국항공우주학회 학술발표회 초록집
1995 .11
-
축류터빈 동익 내부의 누설유동에 관한 수치해석
한국전산유체공학회 학술대회논문집
2003 .08
-
대칭 팁 간극에 기인한 고속으로 회전하는 압축기에서의 유동
한국유체기계학회 학술대회 논문집
2002 .12
-
Computational study of tip clearance flow in Kaplan Turbine
한국유체기계학회 학술대회 논문집
2017 .12
-
7 MW급 증기터빈 기본형상설계 기법에 대한 연구
동력시스템공학회지
2019 .04
-
Design and Verification of Multi-Step Blade Tip Clearance Control System for Large Gas Turbine Using Hydraulic Pressure
Journal of the Korean Society for Precision Engineering
2020 .05
-
Comparative study on efficiency of impulse turbine and Wells turbine for OWC wave energy plant
한국해양환경·에너지학회 학술대회논문집
2015 .05
이 논문의 저자 정보
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2009-550-016214677