Effect of tube-support interaction on the dynamic responses of heat exchanger tubes. [LMFBR]

Conference · Sat Jan 01 04:00:00 EST 1977

OSTI ID:5319282

Shin, Y S; Jendrzejczyk, J A; Wambsganss, M W

Operating heat exchangers have experienced tube damages due to excessive flow-induced vibration. The relatively small inherent tube-to-baffle hole clearances associated with manufacturing tolerances in heat exchangers affect the tube vibrational characteristics. In attempting a theoretical analysis, questions arise as to the effects of tube-baffle impacting on dynamic responses. Experiments were performed to determine the effects of tube-baffle impacting in vertical/horizontal tube orientation, and in air/water medium on the vibrational characteristics (resonant frequencies, mode shapes, and damping) and displacement response amplitudes of a seven-span tube model. The tube and support conditions were prototypic, and overall length approximately one-third that of a straight tube segment of the steam generator designed for the CRBR. The test results were compared with the analytical results based on the multispan beam with ''knife-edge'' supports.

• Research Organization: Argonne National Lab., Ill. (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5319282
• Report Number(s): CONF-770807-51
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
Breeding
BREEDER REACTORS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FLUID FLOW
FUNCTIONS
HEAT EXCHANGERS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MECHANICAL VIBRATIONS
REACTORS
RESPONSE FUNCTIONS
TUBES