Finite Element Analysis on Frequency Characteristic of Elastic Tube Containing Fluid Flow

摘要

This paper presents the finite element (FE) model of elastic tube containing fluid flow, and simulation calculations are finished for different tubes including straight tube, 1/4 circular one and half circular one. Some conclusions which have instructional significance for designing sensing structure of resonant direct mass flowmeter are obtained. As a sensing unit, elastic tube plays an important part in resonant direct mass flowmeter. When flow through tube, not only Coriolis Effect will cause extra vibration of elastic tube and change its mode of vibration, but also the fluid velocity will change the frequency of elastic tube.