Side Discharges into Open Channels: Mathematical Model
Publication: Journal of Hydraulic Engineering
Volume 109, Issue 12
Abstract
The paper presents a three‐dimensional numerical mathematical model for calculating the near field of side discharges into open channel flow. The method employs the standard turbulence model for determining the turbulent stresses. Two discretization schemes are considered, namely, the hybrid central/upwind differencing scheme and the quadratic, upstream‐weighted differencing scheme. The latter has been shown by previous investigators to produce improved numerical solutions for a number or recirculating flows. This finding is confirmed by the present investigation. The predictions are compared with experimental observations of earlier investigators of isothermal side discharges into both rough‐ and smooth‐bed open channel flows; each at discharge to cross flow velocity ratios of 0.3 and 4.0. The agreement is in the main, satisfactory for all the different cases considered.
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Published In
Journal of Hydraulic Engineering
Volume 109 • Issue 12 • December 1983
Pages: 1707 - 1722
Copyright
Copyright © 1983 ASCE.
History
Published online: Dec 1, 1983
Published in print: Dec 1983
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