New Electrode-Wire CT Scanner for Void Distribution Measurements

Abstract

We have developed a new electrode-wire CT scanner for void distribution measurements. This CT scanner is an extension of the electrical probe method. The CT scanning method, which utilizes conductance values as projection data to use in the reconstruction of void distribution, is composed of electrode-wires stretched over a cross section of the flow area. The scanner is simpler and safer than conventional X-ray CT scanners. In this paper we describe the new CT scanner and discuss its applicability to void distribution measurements. Some examples of void measurements under both steady and unsteady two-phase flow conditions are shown.