Title :
Study on a voidage measurement method based on ERT system and Otsu algorithm
Author_Institution :
Coll. of Inf. & Electron. Eng., Zhejiang Gongshang Univ., Hangzhou
Abstract :
A new voidage measurement method for gas-liquid two-phase flow based on electrical resistance tomography (ERT) and Otsu algorithm is studied. A 16-electrode ERT system carries out for data collection and image reconstruction. Otsu algorithm is used to select the threshold adaptively and binarize the reconstructed images. According to the binarized images, the cross-sectional void fraction of gas-liquid two-phase flow is calculated. Then the average void fraction can be achieved through continuous sampling. Experiments show that the errors of the measured average void fraction values are within 8% and the method is effective.
Keywords :
flow measurement; flow visualisation; image reconstruction; mechanical engineering computing; tomography; two-phase flow; Ostu algorithm; binarized images; cross-sectional void fraction; electrical resistance tomography; gas-liquid two-phase flow; image reconstruction; voidage measurement method; Electric resistance; Electric variables measurement; Electrical resistance measurement; Fluid flow measurement; Image reconstruction; Image sampling; Tomography; ERT; Otsu algorithm; Two-phase flow; reconstruction;
Conference_Titel :
Control and Decision Conference, 2008. CCDC 2008. Chinese
Conference_Location :
Yantai, Shandong
Print_ISBN :
978-1-4244-1733-9
Electronic_ISBN :
978-1-4244-1734-6
DOI :
10.1109/CCDC.2008.4598267
