Investigation on pressure wave propagation in two-phase flow

The investigation on pressure wave propagation in gas-water two-phase flow is one of the key subjects that emerged from wide industrial application. The propagation characteristics in bubble flow were studied in detail by experimental test and numerical simulation. The vapor fraction had a great effect on the propagation whereas the liquid velocity hardly did. The dispersion was an important characteristic of pressure wave but it could be omitted if the disturbed frequency became > 400 Hz. The pressure wave propagation in gas-liquid bubble flow could be predicted well with the presented mathematic model, which is based on the two-fluid model and small perturbation theory.