Comparison of Optical Tomography and Wire-Mesh Sensor Applied to Visualize Two-Phase Flow
T.P. Vendruscolo1, E.N. Santos1, E. Schleicher2, U. Hampel2,3, C. Martelli1, M.J. Da Silva1
1 Department of Electrical Engineering (CPGEI), Universidade Tecnológica Federal do Paraná, Curitiba, Brazil
2 Institute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
3 Technische Universität Dresden, Institute of Power Engineering, AREVA Endowed Chair of Imaging Techniques in Energy and Process Engineering, Dresden, Germany
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Two-phase gas-liquid flows often occur in many industrial processes such as oil and gas recovery and processing. Such flow may assume different type of geometrical configurations known as flow patterns according to the spatial distribution and superficial velocity of each substance. The investigation of the behavior of each substance that composes the flow is useful in the development and validation of flow simulators as well as in online monitoring of process conditions, ensuring safety and/or efficiency in industrial plants. Thus, different measurement techniques have been developed and applied in the past for the monitoring of gas-liquid flows. In this paper, we applied two different imaging techniques: Wire-Mesh sensor and optical tomography system, which were used to monitor vertical two-phase gas-liquid flow at some experimental conditions. Flow patterns investigated are in bubbly, slug and churn flow. The article will discuss the flow images obtained during the measurements as well as compare the images obtained from optical tomograph based on a simple reconstruction technique with the images from wire-mesh sensor.
Keywords: Optical Tomography, Two-Phase Flow, Wire-Mesh Sensor.
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