Abstract:
The Coriolis sass flowaeter is modelled using the theory of vibrating
beams. Tube deformations for the fundamental mode and the next two nodes
of natural (out-of-plane) vibration are worked out for many tube
geometries. An improved model taking into account the effects of elastic
boundary conditions and added masses of the electromagnetic drive and
detectors is also discussed. A method for predicting the optimum detection
positions is suggested in relation to signal-to-noise ratio. In addition,
an argument for prediction of the effects of a dilute suspension of small
bubbles or particles in the fluid is presented. Finally, experimental
studies are conducted in order to demonstrate the validity of the
theoretical models.
