Unsteady fluid forces and fluidelastic vibration of a group of circular cylinders

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6611744

Chen, S S

When a single cylinder oscillates in a quiescent fluid, its natural frequencies and model damping values are affected by the surrounding fluid; these fluid effects can generally be accounted for by fluid added mass and fluid damping forces. In a flowing fluid, added mass and fluid damping are dependent of flow velocity, and other fluid force components, fluid-stiffness force and fluid excitation force, are also important. In contrast to an isolated cylinder, the motion of a particular cylinder in a group will excite the surrounding cylinders; this type of oscillations is generally called fluidelastic vibration. Fluidelastic vibrations of multiply cylinders are attributed to fluid inertia, fluid damping, and fluid stiffness forces as well as fluid excitation forces. Once the fluid excitation forces and motion-dependent fluid forces acting on cylinders are known, coupled fluidelastic oscillations of a group of cylinders can be analyzed. The objectives of this note are to summarize recent development of the state-of-the-art of this subject, including quiescent fluid, axial flow, crossflow, and future research needs. 101 refs.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6611744
• Report Number(s): CONF-901109-8; ON: DE90013661
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
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COMPRESSIBILITY
DAMPING
DYNAMICS
FINITE ELEMENT METHOD
FLUID FLOW
FLUID MECHANICS
FLUID-STRUCTURE INTERACTIONS
FREQUENCY ANALYSIS
HOMOGENIZATION METHODS
HYDRAULICS
INSTABILITY
INTERACTIONS
MATHEMATICAL MODELS
MEASURING METHODS
MECHANICAL PROPERTIES
MECHANICAL VIBRATIONS
MECHANICS
NUMERICAL SOLUTION
OSCILLATIONS
PERFORMANCE TESTING
REYNOLDS NUMBER
STEADY-STATE CONDITIONS
TESTING
TUBES
TURBULENCE