原子能科学技术2017，Vol.51Issue(1)：133-138,6.DOI:10.7538/yzk.2017.51.01.0133
传热管在内外流体及间隙作用下的非线性振动特性
Nonlinear Vibration Characteristics of Heat Transfer Tube Subjected to Internal and External Flows and Loose Support
摘要
Abstract
Based on force balance method , the nonlinear differential equation of heat transfer tube ,subjected to internal and external flows together with loose support ,was developed .The nonlinearity associated with the mean axial extension of the tube was accounted for in the current work .Meanwhile ,the interaction of tube vibration and fluid force induced by cross flow were modeled by wake oscillator model .The response of the coupling system was calculated using a fourth order Runge‐Kutta integration algo‐rithm and the nonlinear dynamics characteristics were studied .The bifurcation diagrams for vibration amplitude with cross flow velocities were constructed .The results show that the internal flow velocity has remarkable effect on coupling system of heat transfer tube with loose support .关键词
非线性振动/涡致振动/分叉/混沌运动/尾流振子模型Key words
nonlinear vibration/vortex induced vibration/bifurcation/chaotic motion/wake oscillator model分类
数理科学引用本文复制引用
冯志鹏,兰彬,臧峰刚,张毅雄,曾忠秀..传热管在内外流体及间隙作用下的非线性振动特性[J].原子能科学技术,2017,51(1):133-138,6.基金项目
国家自然科学基金资助项目 （）
