Bestimmung der fluidelastischen Instabilität in querangeströmten Rohrbündeln
作者:
Horst Gelbe,
Kai Schröder,
期刊:
Chemie Ingenieur Technik
(WILEY Available online 1998)
卷期:
Volume 70,
issue 1‐2
页码: 80-88
ISSN:0009-286X
年代: 1998
DOI:10.1002/cite.330700106
出版商: WILEY‐VCH Verlag
数据来源: WILEY
摘要:
AbstractFor the design of tube bundle heat exchangers avoiding tube bundle damage caused by vibration, fluidelastic instability is the most important vibration excitation mechanism. In order to present a guideline in the VDI‐Wärmeatlas the existing recommendations ofCHEN,WEAVERandFITZPATRICKandPETTIGREWandTAYLORwere examined. They differ in the suggested equations for calculating critical velocities for single phase crossflow. With an extensive evaluation and test of consistency of the these and newly available data on this topic, better correlations could be derived. Consistent definitions of critical flow velocity, damping, natural frequency and hydrodynamic mass are used; their values are to be determined in the still fluid with the density ρ. Confident documented data show only a small scatter. The other data deviate more, but mainly to the safe s
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