超高压管线系统气固耦合振动特性的仿真研究

基于工程气固耦合理论和伽辽金法,以某石化企业内压为300MPa的某管段为研究对象,建立了超高压管线系统气固耦合振动的数值模型,并应用任意拉格朗日-欧拉分析方法对管段充气前后的振动特性进行数值分析计算,通过与现场测试结果对比,验证了有限元模型和计算过程的合理性和可靠性,为超高压管线系统减振降噪研究提供理论参考。

Simulation Research on Gas-solid Coupling Vibration Characteristics of the Ultra-high Pressure Pipeline

In a petrochemical enterprise, the pipe of internal pressure 300MPa is researched, based on the engineering gas-solid coupling theory and Galerkin method. A gas-solid coupled vibration numerical model has been established in the ultra-high pressure pipeline. The pipe vibration characteristics are calculated by numerical analysis method, which is the application of Arbitrary Lagrangian-Eulerian method in analysis of the empty pipe and gas pipe. The ealculating result is basically consistent with the result of the test. Therefore, it suggests that the established model is reasonable, and the boundary condition as well as the calculating method is reliable. The present paper provides references for the research of vibration and noise reduction on the ultra-high pressure pipeline system.