Author:
Song Guangdong,Zhu Lina,Liu Mengmeng,Yu Huajin,Zhou Lijun,Gong Xiuyan
Abstract
Abstract
Flow induced vibrations in heat exchanger tubes have led to numerous accidents and economic losses in the past decades. The vibration characteristics of traditional heat tubes have been studied comprehensively through experiment, numerical simulations and theoretical analysis. Special tubes with spatial bended forms possess the great performance in nuclear engineering. The present work is motivated to understand the unclear flow-induced vibration features of these original heat exchanger tubes. An experimental system including of the tested objects are designed in water environment. The vibration responses and frequencies of spatial bended section of the heat exchanger tubes are tested and analysed. The results show that the spatial-bended tubes are safe enough to suffer the water flow within the velocity of 1m/s. The considerable vibration responses are in the bended areas with square configure, which should be specifically designed. The present work can be a guide for the special heat exchangers in nuclear engineering.
Subject
General Physics and Astronomy
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