折流板结构尺寸对热交换器振动的影响分析

摘要

In order to evaluate heat exchanger vibration impact affected by baffle structure,u-sing a typical example of heat exchanger as research object,by FORTRAN program language,to analyze all kinds of vibration mechanism of different baffle structure size.Research results show that,reducing baffle spacing is very effective to prevent fluid elastic instability,turbulence buffe-ting vibration,vortex shedding and resonance vibration.Changing baffle cutting rate have little effect of fluid elastic instability vibration,but very effective to prevent turbulence buffeting,vor-tex shedding and resonance vibration.Therefore,according to the different vibration problems, adjust the baffle spacing or cutting rate is very effective.%为了评估折流板结构尺寸对热交换器振动的影响，在分析各种振动机理的基础上，以海洋石油平台代表性热交换器实例为研究对象，利用 FORTRAN 语言编制计算程序，对不同折流板结构尺寸对热交换器振动的影响进行理论研究。研究结果表明，减小折流板间距对防止流体弹性不稳定振动、湍流抖振、漩涡脱落和声振均非常有效；减小折流板切割率对流体弹性不稳定振动影响不大，但对防止湍流抖振、漩涡脱落和声振较为有效。针对不同振动问题，调整折流板间距或切割率非常有效。