XUE Ting,XU Ling-shuang,ZHANG Shang-zhen.Bubble behavior characteristics based on virtual binocular stereo vision[J].Optoelectronics Letters,2018,14(1):44-47 Bubble behavior characteristics based on virtual binocular stereo vision Author Name Affiliation XUE Ting  School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China  XU Ling-shuang  School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China  ZHANG Shang-zhen  School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China  Abstract:       The three-dimensional (3D) behavior characteristics of bubble rising in gas-liquid two-phase flow are of great importance to study bubbly flow mechanism and guide engineering practice. Based on the dual-perspective imaging of virtual binocular stereo vision, the 3D behavior characteristics of bubbles in gas-liquid two-phase flow are studied in detail, which effectively increases the projection information of bubbles to acquire more accurate behavior features. In this paper, the variations of bubble equivalent diameter, volume, velocity and trajectory in the rising process are estimated, and the factors affecting bubble behavior characteristics are analyzed. It is shown that the method is real-time and valid, the equivalent diameter of the rising bubble in the stagnant water is periodically changed, and the crests and troughs in the equivalent diameter curve appear alternately. The bubble behavior characteristics as well as the spiral amplitude are affected by the orifice diameter and the gas volume flow. Hits: 4158 Download times: 0 View Full Text    Download reader