基于ANSYS的蒸汽发生器传热管流致振动分析程序

Flow-Induced Vibration Analysis of Steam Generator Heat Transfer Tube Based on ANSYS

基于通用有限元软件ANSYS的APDL语言编写蒸汽发生器传热管流致振动分析程序。采用三维梁单元建立传热管有限元模型,对传热管进行模态分析,计算传热管的流弹不稳定率和湍流激励响应,并与专用流致振动计算软件分析结果进行对比。结果表明,模态分析以及流弹不稳定率计算结果与流致振动专用计算软件分析结果一致,湍流激励响应更偏于保守。计算程序基于通用有限元软件,较专用软件建模方便、可读性强、适用范围广泛,可大大提高实际工程分析效率。

Based on general finite element software ANSYS using APDL language, steam generator heat transfer tube linear flow induced vibration analysis program is developed. The paper established tube finite element model with 3-D beam element, complete tube mode analysis, and the fluid-elastic instability ratio and turbulence response of the tube is calculated. Comparison of mode analysis result and fluid-elastic ratio calculated by ANSYS-APDL and program-specific shows that the two results are consistent, and the turbulence response calculated by ANSYS-APDL is more conservative. The computation program is based on the general finite element program ANSYS, it can greatly improve the efficiency of the practice engineering analysis with modeling convenience, strong readability and wide application range.