Flow measurement is very important in sewers and water transmission systems. Many types of instruments such as weir, gate and parshall flume…. is use to measuring discharge in free surfaces flow. If there are sediment or crash in water the work of measuring system were done trouble. Using two control system flow "gate-weir" increases the accurate of flow measurement. Weir and gate system is a plate that seated at end of canal and the flow current from over and under it. Sediment through out under and buoyancy material current over the weir-gate system. The aim of this research is study the characteristics of flow hydraulic and cross section geometry on coefficient discharge in two control system weir -gate. A rectangular plate fixed at the end of a pipe with 240 mm diameter and 8000 mm length and flow was measured for each part (weir and gate). The results show that the new system can modify the flow pattern upstream and the characteristic flow nearer to theory condition, that increases the accurate of estimation coefficient discharge and flow measurement relate to common weirs
Flow measurement is very important in sewers and water transmission systems. Many types of instruments such as weir, gate and parshall flume…. is use to measuring discharge in free surfaces flow. If there are sediment or crash in water the work of measuring system were done trouble. Using two control system flow "gate-weir" increases the accurate of flow measurement. Weir and gate system is a plate that seated at end of canal and the flow current from over and under it. Sediment through out under and buoyancy material current over the weir-gate system. The aim of this research is study the characteristics of flow hydraulic and cross section geometry on coefficient discharge in two control system weir -gate. A rectangular plate fixed at the end of a pipe with 240 mm diameter and 8000 mm length and flow was measured for each part (weir and gate). The results show that the new system can modify the flow pattern upstream and the characteristic flow nearer to theory condition, that increases the accurate of estimation coefficient discharge and flow measurement relate to common weirs.
Esmaili, K. (2011). The Study of effect cross section changes on modification pattern flow and increase of coefficient discharge for two control systems in open channels. Irrigation and Water Engineering, 1(3), 71-81.
MLA
kazem Esmaili. "The Study of effect cross section changes on modification pattern flow and increase of coefficient discharge for two control systems in open channels". Irrigation and Water Engineering, 1, 3, 2011, 71-81.
HARVARD
Esmaili, K. (2011). 'The Study of effect cross section changes on modification pattern flow and increase of coefficient discharge for two control systems in open channels', Irrigation and Water Engineering, 1(3), pp. 71-81.
VANCOUVER
Esmaili, K. The Study of effect cross section changes on modification pattern flow and increase of coefficient discharge for two control systems in open channels. Irrigation and Water Engineering, 2011; 1(3): 71-81.
)