Aiming at the vibration problem of petrochemical pipeline system,the numerical simulation method of ANSYS Workbench is used to calculate and analyze the process of fluid vibration when it passes through pipe bending,and the vibration of pipe bending is analyzed from two aspects of fluid excitation and sound vibration.The results of fluid-induced vibration show that the fluid flow rate has a great influence on the pipeline vibration.Increasing the flow rate will aggravate the instability of the pipeline operation,and the vibration will be more intense.The response frequency of fluid-induced vibration is lower,which is close to the low-order natural frequency of the pipeline.The results of acoustic vibration show that the excitation of acoustic resonance is usually high frequency,located near the high order natural frequency of the acoustic mode,and the amplitude is large.Through calculation and analysis,the vibration characteristics of the curved pipe are clearly revealed,which provides reference value for the subsequent research.
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