Fluidelastic Instability of Loosely Supported Tubes

Conference · Thu Mar 14 04:00:00 EST 1991

OSTI ID:5634316

Cai, Y. ^[1]; Chen, S. S. ^[1]; Mulcahy, T. M. ^[1]

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1. Argonne National Laboratory (ANL), Argonne, IL (United States)

The supports for heat exchanger tubes are usually plates with drilled holes. To facilitate manufacture and to allow for thermal expansion of the tubes, small clearances are used between tubes and tube supports. When the clearance is relatively large, the tube may rattle inside some of the support clearances with small-amplitude oscillations. This type of mode, in which some supports do not provide effective support, is called tube-support-plate (TSP)-inactive mode. An analytical study of fluidelastic instability of loosely supported tubes, vibrating in a tube support plate (TSP)-inactive mode, is presented based on a bilinear mathematical model, which incorporates all motion-dependent fluid forces. Depending on the system parameters, the dynamic response of the tube includes periodic, quasiperiodic, and chaotic motions. Analytical results are compared with published experimental data; they agree reasonably well.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5634316
• Report Number(s): ANL/CP--73023; CONF-9105116--1; ON: DE91011836
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
97 MATHEMATICS AND COMPUTING
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
CROSSFLOW SYSTEMS
DIFFERENTIAL EQUATIONS
DYNAMICS
ELASTICITY
EQUATIONS
EQUATIONS OF MOTION
FAILURES
FLUID FLOW
HEAT EXCHANGERS
INSTABILITY
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MECHANICS
MOTION
OSCILLATIONS
PARTIAL DIFFERENTIAL EQUATIONS
SIMULATION
TENSILE PROPERTIES
TUBES
VELOCITY