Author(s): Cheng Chen, Yunfeng Xia, Ziyang Li, Xin Wang
Linked Author(s): Cheng Chen
Keywords: Model test, flow measurement, particle image velocimetry, detection method, rotating platform
Abstract: In the experimental study of large-scale river model in China, LSPIV (Large-Scale Particle Image Velocimetry) measurement technique for surface flow field has been applied widely. The measurement accuracy of LSPIV is affected by seeding particle, camera resolution, lens distortion, mounting height, time control precision of image acquisition, PIV algorithm, etc. In the process of the actual use of LSPIV measurement system, the size of the correlation window can also directly lead to measurement error. In order to analyze the LSPIV technique in river model test, it is necessary to research the detect method for the measurement accuracy. A new detection method for LSPIV in river model test is introduced in this paper. Water flow can be simulated by a uniform rotating platform with precisely controlled system. The measured data of LSPIV system has been compared with the true value of rotating platform to detect the accuracy of LSPIV system
Year: 2017