Simulation of Flow Suspended Load in Weirs by Using Flow3D Model
Abstract: Sharp-crested weir
and side-channel weirs can be considered among the control and flow-measuring
structures which are greatly applicable in channels, dam spillways and other
hydraulic structures. Discharge coefficient in these two types of weirs is
affected by the structural geometry and the hydraulics of the flow. Suspended
load is one of the main factors which may affect the hydraulics of the flow and
consequently modify the flow discharge coefficient. Using different geometrical
and hydraulic conditions, the discharge coefficient relation in sharp-crested
and side channel weirs for the case of suspended load can be extracted. Flow3D
numerical model is capable of precisely simulation the flow containing
suspended and bed load in the main channel. The discharge coefficient equation
is deduced and presented based on the Froude number, by numerical iterations.
The numerical results reveal that the discharge coefficient in the two cases of
clear water and the flow containing suspended load are totally different. At
the same hydraulic load, the discharge coefficient in the case of existing
suspended load is greater than the case of clear water; In addition, the
discharge coefficient is reduced by increasing the Froude number in all cases
with different load concentrations.
Author: Mehdi Taghavi, Hesam
Ghodousi
Journal Code: jptsipilgg150034
Artikel Terkait :
Jp Teknik Sipil gg 2015
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