A simple model for a vibrating element density meter in two phase flow

摘要

A vibrating element density meter is a mechanical oscillator with known properties, for example a tuning fork or a simple rod, driven to vibrate at a known frequency. The oscillator is immersed in a fluid and the resonant frequency measured. The density of the fluid can then be inferred. We consider an idealised meter immersed in two phase flows of various types, and investigate whether a simple, single phase interpretation allows us to deduce the density of the mixture.