Title :
Velocity measurement of microchannel flow with micro-PIV using optical flow estimation
Author :
Yingchun, Wu ; Xuecheng, Wu ; Linghong, Chen ; Zhihua, Wang ; Shiliang, Pu ; Hao, Zhou ; Kunzan, Qiu ; Kefa, Cen
Author_Institution :
Inst. for Thermal Power Eng., State Key Lab. of Clean Energy Utilization, Zhejiang Univ., Hangzhou, China
Abstract :
An optical flow technique based on the local intensity-based differential method was applied to evaluate the velocity field of flow in a microchannel with micro-PIV. It is shown that the vector field with optical flow technique agrees well with the one using classical cross correlation. Results show that both the velocity field and the averaged velocity profile appear quite physically reasonable. With the advantage of yielding the subpixel accuracy robustly at spare tracing particle density, the optical flow method show potential in flow estimation.
Keywords :
flow visualisation; image sequences; microchannel flow; velocity measurement; averaged velocity profile; classical cross correlation; flow velocity field; local intensity-based differential method; micro-PIV; microchannel flow; optical flow estimation; optical flow method; particle density; particle image velocimetry; subpixel accuracy; vector field; velocity measurement; Adaptive optics; Biomedical optical imaging; Estimation; Fluids; Microchannel; Optical diffraction; Optical imaging; Micro-PIV; microchannel flow; optical flow;
Conference_Titel :
Electric Information and Control Engineering (ICEICE), 2011 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-8036-4
DOI :
10.1109/ICEICE.2011.5776989