Tomographic Measurement Techniques- Visualization of Multiphase Flows
by
Marc Lörcher
Universität Hannover, Institut für Verfahrenstechnik, Callinstr. 36, 30167 Hannover
Coauthors: Dirk Schmitz, Dieter Mewes

A new tomographic measurement technique visualises the field of local void fraction in the two phase flow of air and water in the mixing chamber of a two-phase-nozzle. With this measurement technique a high spatial and temporal resolution can be achieved. The measured physical property is the different electric conductivity of the two fluids water and air. In the measurement plane the conductivity is measured between many wires strained in the investigated cross section. The measurement values are proportional to the relative liquid fraction. With an algebraic reconstruction technique (ART) the field of the liquid fraction in the investigated cross-section is calculated from the measurement values. The quality of the reconstruction is increased by a-priori-knowledge.

Date received: January 28, 1999

Copyright © 1999 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # cacp-18.