Fluid-damping-controlled instability of tubes in crossflow
Conference
·
OSTI ID:292841
- Argonne National Lab., IL (United States)
- Electric Power Research Inst., Palo Alto, CA (United States). Nuclear Power Div.
A mathematical model for fluid damping controlled instability of tubes presented in this paper is based on the unsteady flow theory. Motion dependent fluid forces are measured in a water channel. From the measured fluid forces, fluid stiffness and fluid damping coefficients, are calculated as a function of reduced flow velocity, oscillation amplitude, and Reynolds number. Once these coefficients are known, the mathematical model can be applied to predict structural instability due to fluid damping. Many cases are considered: single tube, twin tubes, tube row, triangular array, and square arrays. The results show the instability regions based on the fluid damping coefficients and provide the answers to a series of questions on fluid elastic instability of tube arrays in crossflow.
- Research Organization:
- Argonne National Lab., Energy Technology Div., IL (United States)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 292841
- Report Number(s):
- ANL/ET/CP--92179; CONF-971115--; ON: DE97008664
- Country of Publication:
- United States
- Language:
- English
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