Title :
Parameter measurements of two-phase bubbly flow using digital image processing
Author :
Shi, Lilian ; Zhou, Zekui ; Ren, Shapu
Author_Institution :
Dept. of Control, Zhejiang Univ., Hangzhou, China
Abstract :
A new method was presented to measure flowing parameters in two-phase flow. The flowing images were captured by a CCD camera. An image-subtracted algorithm was used to remove the background noise, an iteration algorithm was used to calculate the optimizing threshold, and some morphological functions were applied to modify bubbles shape. The method can measure the bubbles area, perimeter, diameter, gas area fraction and bubbles velocity in gas-liquid two-phase bubbly flow.
Keywords :
CCD image sensors; bubbles; image processing; iterative methods; optimisation; spatial variables measurement; two-phase flow; velocity measurement; CCD camera; bubbles area measurement; bubbles diameter measurement; bubbles perimeter measurement; bubbles velocity measurement; digital image processing; flowing parameter measurement; gas area fraction measurement; gas-liquid two phase bubbly flow; image subtracted algorithm; iteration algorithm; morphological functions; threshold optimization; Area measurement; Background noise; Cameras; Charge coupled devices; Charge-coupled image sensors; Digital images; Fluid flow measurement; Image processing; Size measurement; Water storage;
Conference_Titel :
Intelligent Control and Automation, 2004. WCICA 2004. Fifth World Congress on
Print_ISBN :
0-7803-8273-0
DOI :
10.1109/WCICA.2004.1342213
