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Title: Acoustic discharge measurements for the performance testing of low-head hydroelectric turbines under disturbed flow conditions
Authors: Doering, JC
Gawne, KD
Keywords: acoustic discharge measurement
disturbed flow
performance testing
Issue Date: 29-Feb-2000
Citation: 0315-1468; CAN J CIVIL ENG, FEB 2000, vol. 27, no. 1, p.160 to 165.
Abstract: The detection, measurement, and characterization of frazil ice particles is a necessary first step in advancing our understanding of frazil ice processes as well as improving models. The detection of frazil ice has been accomplished in a number of ways. Herein, a digital image processing system to characterize frazil in a laboratory environment is described. The system is part of an ice research facility that uses a counter-rotating flume to generate frazil ice. Frazil ice is detected using a cross-polarized light technique. The system acquires digital gray-scale images of frazil ice that are analyzed and manipulated digitally to elucidate the temporal and spatial variation of frazil ice characteristics. For example, the system can be readily used to determine the size distribution of frazil ice particles, the vertical distribution of frazil, or the concentration of frazil ice.
Appears in Collection(s):Research Publications (UofM Student, Faculty and Staff only access)

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