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iDEA: Drexel E-repository and Archives > Drexel Academic Community > College of Engineering > Department of Civil, Architectural,and Environmental Engineering > Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405] > Irrigation canal discharge measurement by using commercial digital video camera

Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/1454

Title: Irrigation canal discharge measurement by using commercial digital video camera
Authors: Huang, W. C.
Lee, M. C.
Leu, J. M.
Lai, C. J.
Chan, H. C.
Keywords: Flow measurements;Experimental hydraulics
Issue Date: 13-Sep-2006
Publisher: Michael Piasecki and College of Engineering, Drexel University
Citation: Proceedings of the Seventh International Conference on Hydroscience and Engineering, Philadelphia, PA, September 2006. http://hdl.handle.net/1860/732
Abstract: This study present the image measurement techniques on the surface velocity field and water stage. The images of free surface and stage gauge are obtained from commercial digital video camera. Time series of surface velocity and stage had been collected simultaneously. Knowledge of flow filed in a irrigation canal was essential for computing discharge. Large scale particle image velocimetry( LSPIV)was used to determine surface velocities in the irrigation canal. LSPIV proceeds by using the bubbles float on the water surface as the tracer particles, and making crosscorrelation analys is between two continuous images. Thus, it can calculate the speed and direction of tracer particles. The whole surface velocity distribution in a irrigation canal can be obtained. The water stage of canal obtains from the digital video camera images by making use of image segment to separate stage gauge and background. Discharge computed by using the surface velocities and water stage via open channel velocity distribution theory. Comparing the image techniques measured discharge with Parshall flume data shows the differences are to be less then 5%. The results suggest that the developed image measurement techniques can be used in the applications to estimate irrigation canal discharge effectively.
Description: Paper presented at The Seventh International Conference on HydroScience and Engineering (ICHE) hosted by the College of Engineering at Drexel Univeristy on September 10-13, 2006 in Philadelphia, Pennsylvania. The conference theme was IT in the Field of HydroSciences. It included several mini-symposia that emphasized IT topics in HydroSciences and the yearly meeting of the metadata group of the International Oceanographic Data and Information Exchange organization.
URI: http://hdl.handle.net/1860/1454
ISBN: 0977447405
Appears in Collections:Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405]

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