Experimental and numerical analysis of weir structures in open channel flows
Abstract
Weirs are important water structures used to hold water in dams and canals and to safely transfer water
from upstream to downstream. Due to these features, these structures, which have been used for years,
have many different designs. In this study, a rectangular labyrinth weir and an inclined-bed rectangular
weir were studied experimentally and numerically. The weir geometries used in the experiment were
produced in a 3D printer and transferred to the numerical simulation with the same dimensions. The
discharge and discharge coefficients corresponding to five different upstream heights obtained from the
experiment and numerical simulation were obtained and the data were compared. Comparison of
numerical and experimental results showed a good agreement. Where the difference between the tests is
maximum was calculated at H0/P = 0.1 m where the water load is the lowest.
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