Importance of Added Mass and Damping in Flow-Induced Vibration Analysis of Tubes Bundle: An Overview
Flow-induced vibration is of prime concern to the designers of heat exchangers subjected to high flows of gases or liquids. Excessive vibration may cause tube failure due to fatigue or fretting-wear. Tube failure results in, expensive plant upholding and suffers loss of production. Therefore, tube...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Mehran University of Engineering and Technology
2012-01-01
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| Series: | Mehran University Research Journal of Engineering and Technology |
| Subjects: | |
| Online Access: | http://publications.muet.edu.pk/research_papers/pdf/pdf200.pdf |
| Summary: | Flow-induced vibration is of prime concern to the designers of heat exchangers subjected to high flows of
gases or liquids. Excessive vibration may cause tube failure due to fatigue or fretting-wear. Tube failure
results in, expensive plant upholding and suffers loss of production. Therefore, tube failure due to
unwarranted vibration must be avoided in process heat exchangers and nuclear steam generators,
preferably at design stage. Such vibration problems may be avoided through a comprehensive flowinduced
vibration analysis before fabrication of heat exchangers. However, it requires an understanding
of vibration mechanism and parameters related to flow-induced vibration. For an accurate vibration
analysis, it is of prime importance to have good estimates of structural and flow related dynamic
parameters. Thus dynamic parameters such as added mass and damping are of significant concern in a
flow regime. The purpose of this paper is to provide an overview of our state of knowledge and role of
dynamic parameters in flow-induced vibration on tube bundles due to current trend of larger heat
exchangers. The present paper provides published data, analysis, evaluation, formulation, and experimental
studies related to hydrodynamic mass and damping by a large number of researchers. Guidelines for
experimental research and heat exchangers design related to added mass and damping mechanisms
subjected to both single and two-phase flow are outlined in this paper. |
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| ISSN: | 0254-7821 2413-7219 |