Measurement of bubble flow in liquid using optical tomography

Abstract

The paper present a design and application study of optical tomography for the detection of gas bubbles flowing in a liquid. In the applied method of measurements, the column is exposed to a homogeneous light beam and next the ray is detected with the use of optical wave guided detectors. There is a wide range of applications in the chemical process industry because of their simple operation and good heat and mass transfer. The average bubble diameter is one of these important hydrodynamic parameters, which yield information of the gas-liquid interfacial area as well as the mixing liquid in a column. However, until now, there is no accurate way to predict the size of bubbles. Influence of the structure and dynamics of the measuring path on errors in representation of gas-bubble shapes and velocities has been analyzed.