Mathematical model, instability mechanisms, and stability criteria of a group of circular cylinders subjected to crossflow. [LMFBR]
A mathematical model is presented for a group of circular cylinders subject to crossflow. The fluid-force coefficients in the model are determined from available experimental data. It is found that there are three dynamic instability mechanisms: galloping controlled by fluid damping, flutter controlled by fluidelastic force, and coupled galloping-flutter instability controlled by both fluid damping and fluidelastic force. Closed-form solutions of the critical flow velocity for galloping and flutter are obtained based on constrained modes. Experimental data are found to be in good agreement with the analytical results.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6513899
- Report Number(s):
- ANL-CT-81-22; ON: DE81024487
- Country of Publication:
- United States
- Language:
- English
Similar Records
Instability mechanisms and stability criteria of a group of circular cylinders subjected to cross-flow. Part 1: theory
Instability mechanisms and stability criteria of a group of circular cylinders subjected to cross-flow
Unsteady fluid forces and fluidelastic vibration of a group of circular cylinders
Journal Article
·
Fri Dec 31 23:00:00 EST 1982
· J. Vibr. Stress Reliab. Des; (United States)
·
OSTI ID:6970222
Instability mechanisms and stability criteria of a group of circular cylinders subjected to cross-flow
Journal Article
·
Tue Sep 01 00:00:00 EDT 1981
· Am. Soc. Mech. Eng., (Pap.); (United States)
·
OSTI ID:5079558
Unsteady fluid forces and fluidelastic vibration of a group of circular cylinders
Conference
·
Sun Dec 31 23:00:00 EST 1989
·
OSTI ID:6611744
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