Abstract
The tubes in heat exchangers are usually loosely supported and are vibrated by fluid. The interaction between tubes and supports caused by the fluid induced vibration (FIV) is influenced by different factors. In this work, a finite element code is established to investigate the interaction between tubes and supports. The comprehensive influence of clearance, tube offset and pre-load is studied by analysis of the contact parameters such as contact forces and displacements. The results show that the change of sliding velocity can affect the normal work rate at different the pre-loads and force ratios. The change law of the contact force and normal work rate caused by preload and force ratio differs in different clearances. The offset can affect the normal contact forces and the sliding velocity, and result in the decrease of normal work rate at offset value of 80%. The results of this work can be helpful in the design and further research of heat exchangers especially steam generators.
Publisher
International Institute of Acoustics and Vibration (IIAV)
Subject
General Biochemistry, Genetics and Molecular Biology,Cell Biology,Molecular Biology,Cell Biology,Genetics,Molecular Medicine,Cell Biology,Biochemistry,Cell Biology,Molecular Biology,Physiology,General Medicine,Cell Biology,Molecular Biology,Applied Microbiology and Biotechnology,Microbiology,Cell Biology,Histology,Pathology and Forensic Medicine,Ceramics and Composites,Materials Chemistry,Physical and Theoretical Chemistry,General Chemical Engineering,Ceramics and Composites,Analytical Chemistry,Materials Chemistry,Surfaces, Coatings and Films,Process Chemistry and Technology,Ceramics and Composites,Electronic, Optical and Magnetic Materials