Radio Frequency (R-F) Probe for Bubble Size and Velocity Measurements

摘要

A radio frequency (r-f) probe that can provide local void fraction and interface velocity measurements in a gas-liquid two phase flow was developed. The probe response to bubble passage was investigated with single bubble controlled experiments. For fixed geometry, the probe response was dependent on the dielectric constant of the medium surrounding the probe tip, (air or water), and on the frequency of the carrier signal supplied to the probe. Bubble lengths (