Added mass coefficient of elastic rods in cylindrical fluid

The shock resistance of multi-body structure in confined fluid is a hot topic in recent years because of widely using in nuclear reactors, evaporator and so on. The added mass coefficient of elastic rods which is influenced by many factors is one of key parameters in the research of shock resistance...

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Bibliographic Details
Published in:Nuclear engineering and design 2019-02, Vol.342, p.249-256
Main Authors: Teng, Xie, Jianhu, Liu, Haikun, Wang, Haitao, Li, Du, Pei, Bo, Yan
Format: Article
Language:English
Subjects:
Coefficients
Coordinate transformations
Design engineering
Evaporators
Flow theory
Nuclear engineering
Nuclear reactors
Potential flow
Rods
Shock resistance
Taylor series
Vibration
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Summary:The shock resistance of multi-body structure in confined fluid is a hot topic in recent years because of widely using in nuclear reactors, evaporator and so on. The added mass coefficient of elastic rods which is influenced by many factors is one of key parameters in the research of shock resistance. So the added mass coefficient of elastic rods in confined fluid is deduced based on potential flow theory and validated by an experiment. Taylor expansion and coordinate transformation are used in theoretical derivation. In the experiment, rods are stimulated by exciter and impactor and the results show that the added mass coefficient is related to the distance between rod and the boundary, distance between two rods, vibration phase, vibration direction, modes and the number of rods. There is no obvious difference between vibration and impact. Finally, the conclusion can be used in rapid engineering design of similar structure.
ISSN:0029-5493
1872-759X
DOI:10.1016/j.nucengdes.2018.12.010