Abstract
Transient three-dimensional multiphase flows are a characteristic feature ofmany industrial processes. The experimental observations and measurements ofsuch flows are extremely difficult, and industrial process tomography has beendeveloped over the last decade into a reliable method for investigating thesecomplex phenomena. Gas-solids flows, such as those in pneumatic conveyingsystems, exhibit many interesting features and these can be successfullyinvestigated by using electrical capacitance tomography. This paperdiscusses the current state of the art in this field, advantages andlimitations of the technique and required future developments.Various levels of visualization and processing of tomographic data obtainedin a pilot-plant-scale pneumatic conveying system are presented. A case studyoutlining the principles of measuring the mass flow rate of solids in a verticalchannel is shown.
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