Title :
A Novel Needle Probe Based on High-Speed Complex Permittivity Measurements for Investigation of Dynamic Fluid Flows
Author :
Silva, Marco Jose Da ; Schleicher, Eckhard ; Hampe, Uwe
Author_Institution :
Inst. of Safety Res., Dresden
Abstract :
For the investigation of multiphase or multicomponent flows, which are of interest, for instance, in oil extraction and processing or in chemical engineering, there are only few suitable measuring techniques. For this reason, we have developed a high-speed complex permittivity needle probe. Such probes are able to distinguish the different phases or components of a flow by measuring the complex value of the electrical permittivity at a high data rate (up to 20 000 samples/s). The performance of the system, as well as its ability to differentiate organic substances, has been analyzed. A time-resolved experiment in an oil-water-gas flow, as well as a two-substance mixing experiment in a stirred tank, is presented.
Keywords :
flow measurement; mixing; multiphase flow; permittivity measurement; chemical engineering; dynamic fluid flows; electrical permittivity; high-speed complex permittivity measurements; high-speed complex permittivity needle probe; multicomponent flows; multiphase flows; oil extraction; oil processing; oil-water-gas flow; stirred tank; two-substance mixing; Chemical engineering; Electric variables measurement; Fluid dynamics; Fluid flow; Fluid flow measurement; Needles; Permittivity measurement; Petroleum; Phase measurement; Probes; Complex permittivity measurement; concentration measurement; heterogeneous mixture; multicomponent flow; multiphase flow; needle probe;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2007.900419
