Discharge Coefficient of a Triangular Side-Weir Located on a Curved Channel
Publication: Journal of Irrigation and Drainage Engineering
Volume 130, Issue 5
Abstract
This study aims to obtain sharp crested triangular side-weirs discharge coefficients both in the straight channel and along the bend by using a total of 1,735 experiments. It was found that triangular side-weirs discharging coefficients along the bend depend on the upstream Froude number in the main channel , the apex angle of side-weir , and the bend angle . Because there is much greater intensity of secondary flow created by lateral flow with an increase of the overflow length, sharp crested triangular side-weirs discharge coefficients of the apex angle were achieved more frequently than the others even at the straight channel in subcritical flow conditions. In a curved channel, the path of maximum velocity and the secondary current created by the bend both cause a much greater deviation angle towards the side-weir which is involved within and . Therefore, triangular side-weirs discharging coefficients along the bend are greater than the values obtained in the straight channel.
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Copyright © 2004 ASCE.
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Published online: Oct 1, 2004
Published in print: Oct 2004
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