The behaviour of a tube bundle near the stability limit
Date issued
2007
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of West Bohemia
Abstract
Tube heat exchangers are inseparable components of a great number of energetic machinery, where one fluid
flows through tubes and the other fluid flows around the tubes. Heat transfer occurs between these two fluids.
Apart from the problem of heat transfer, the problem of fluid-structure interaction is very important too. Mainly
the fluid flowing around the tubes may be very dangerous, because it causes vibrations of these tubes. Intensity
of vibration depends on the velocity of the flow. Under the certain, so-called critical velocity, vibration
amplitudes can have random pattern. The objective of this article is to determine the probability of up crossing of
some fixed level. It is necessary to avoid such regimes of operations, in which the damage of a heat exchanger as
a consequence of flow-induced vibration could be caused.
Description
Subject(s)
fluidoelastická interakce, kritická rychlost, náhodné vibrace, mez stability
Citation
Applied and Computational Mechanics. 2007, vol. 1, no. 1, p. 87-96.