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Tomographische Meßverfahren – Visualisierung zweiphasiger Strömungsfelder
Author(s) -
Reinecke Nicolas,
Petritsch Georg,
Schmitz Dirk,
Mewes Dieter
Publication year - 1997
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330691003
Subject(s) - temporal resolution , tomography , image resolution , visualization , materials science , detector , resolution (logic) , electrical capacitance tomography , optics , capacitance , physics , computer science , electrode , artificial intelligence , quantum mechanics
Some applications of electrical tomographic techniques for the measurement of gas/liquid flows in packed columns are described. Electrical tomography is nonintrusive, of high temporal resolution, low cost, engenders no radiation hazard and is easy to implement. This mainly encourages the development of capacitance, resistance and inductance sensing techniques which are applied within volumetric fields of density, pressure, concentration, temperature, velocity or void fraction. The mentioned fields are instationary most of the time or they are of transient character. Therefore, not only temporal but also spatial resolution is required. X‐ray tomography is used for the visualisation of gas‐liquid flow inside packed columns. The measurement system consists of a fixed X‐ray tube and an array of 15 detectors. The spacial resolution is of the order of 0.4 × 0.4 mm, the temporal resolution is increased by use of only 12 steps of rotation and a filtered back‐projection algorithm.