Setup and Fabrication of Cost Effective, Robust Fiber Optical Needle Probes for Application in Multiphase Flows

Bloch, G.; Elfner, J.; Finke, K.; Schleicher, E.; Sattelmayer, Th.

Setup and Fabrication of Cost Effective, Robust Fiber Optical Needle Probes for Application in Multiphase Flows

Bloch, G.; Elfner, J.; Finke, K.; Schleicher, E.; Sattelmayer, T.

A fiber optical probe for detection of void fraction in multiphase flows consisting of silica fibers with core diameters of 200 and 400 µm is presented. Using beam splitter optics with a polarizing filter and a diode laser for illumination, a robust and cost-efective sensor was developed and evaluated in two phase flows with and without phase change. The setup and manufacturing process of the components as well as the post processing of the signals are described in detail.

Keywords: Fiber Optics; Fluid Mechanics; Instruments; Optical Methods; Signal Processing

Contribution to proceedings
21. GALA-Fachtagung "Lasermethoden in der Strömungsmesstechnik", 03.-05.09.2013, München, Bundesrepublik Deutschland
Proceedings der 21. GALA-Fachtagung "Lasermethoden in der Strömungsmesstechnik", Karlsruhe: GALA e.V., 978-3-9805613-9-6, 10-1-10-8

Permalink: https://www.hzdr.de/publications/Publ-17949