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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 1,650 - 1,657 (8page)
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Fluidelastic instability and nonlinear dynamics of tube bundles is a key issue in a steam generator. Especially, once the post-instability motion of the tube becomes larger than the clearance gap to othertubes, effective contact or impact between the tubes under consideration and the other tube inevitable. There is seldom theoretical analysis to the nonlinear dynamic characteristics of a tube array in two-phaseflow. In this paper, experimental and numerical studies were utilized to obtain the critical velocity of theflow-induced instability of a rotated triangular tube array. The calculation results agreed well with theexperimental data. To explore the post-instability dynamics of the tube array system, a Runge-Kuttascheme was used to solve the nonlinear governing equations of tube motion. The numerical resultsindicated that, when the flow pitch velocity is larger than the critical velocity, the tube array system isundergoing a limit cycle motion, and the dynamic characteristics of the tube array are almost similar fordifferent void fractions
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참고문헌 (14)
참고문헌 신청
S. S. Chen / 1982 / Experiment and analysis of instability of tube rows subject to liquid crossflow / J. Appl. Mech 49:704~709
M. J. Pettigrew / 1995 / Vibration of a tube bundle in two-phase Freon cross-flow / J. Press. Vessel Technol 117:321~329
M. J. Pettigrew / 2005 / Detailed flow and force measurements in a rotated triangular tube bundle subjected to two-phase cross-flow / J. Fluids Struct 20:567~575
C. Zhang / 2005 / Vibration excitation force measurements in a rotated triangular tube bundle subjected to two-phase cross flow / Proceedings of PVP 2005
C. Zhang / 2006 / Correlation between vibration excitation forces and the dynamic characteristics of two-phase flow in a rotated triangular tube bundle / Proceedings of PVP 2006
M. J. Pettigrew / 1995 / Vibration of a tube bundle in two-phase Freon cross-flow / J. Press. Vessel Technol 117:321~329
M. J. Pettigrew / 2005 / Detailed flow and force measurements in a rotated triangular tube bundle subjected to two-phase cross-flow / J. Fluids Struct 20:567~575
C. Zhang / 2005 / Vibration excitation force measurements in a rotated triangular tube bundle subjected to two-phase cross flow / Proceedings of PVP 2005
C. Zhang / 2006 / Correlation between vibration excitation forces and the dynamic characteristics of two-phase flow in a rotated triangular tube bundle / Proceedings of PVP 2006
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