Table 7

Head discharge observations (experimental and CFD approach) for modified compound weir geometry

Sr. No.Head over weir, h (expt) (cm)Time to collect 100 litres (sec)Qexpt (lps)QCFD (lps)Qth (lps) for corresponding step sizeCd (expt approach)=[Qexpt/Qth]×0.6Cd (CFD approach)Remarks
4.87 49.79 2.006 2.01 0.6 0.6 Exact prediction of discharge values. Cd remains constant for various flow ranges 
6.03 35.502 2.82 2.82 2.8 0.596 0.6 
7.01 27.784 3.59 3.6 3.6 0.594 0.6 
7.89 22.622 4.42 4.39 4.4 0.602 0.6 
8.68 19.134 5.22 5.19 5.2 0.602 0.6 
9.41 16.554 6.03 5.97 0.598 0.6 
10.08 14.682 6.806 6.78 6.8 0.596 0.6 
10.78 13.152 7.602 7.68 7.6 0.596 0.61 
11.31 11.81 8.47 8.53 8.4 0.6 0.61 
10 11.87 10.822 9.24 9.45 9.2 0.6 0.62 
Sr. No.Head over weir, h (expt) (cm)Time to collect 100 litres (sec)Qexpt (lps)QCFD (lps)Qth (lps) for corresponding step sizeCd (expt approach)=[Qexpt/Qth]×0.6Cd (CFD approach)Remarks
4.87 49.79 2.006 2.01 0.6 0.6 Exact prediction of discharge values. Cd remains constant for various flow ranges 
6.03 35.502 2.82 2.82 2.8 0.596 0.6 
7.01 27.784 3.59 3.6 3.6 0.594 0.6 
7.89 22.622 4.42 4.39 4.4 0.602 0.6 
8.68 19.134 5.22 5.19 5.2 0.602 0.6 
9.41 16.554 6.03 5.97 0.598 0.6 
10.08 14.682 6.806 6.78 6.8 0.596 0.6 
10.78 13.152 7.602 7.68 7.6 0.596 0.61 
11.31 11.81 8.47 8.53 8.4 0.6 0.61 
10 11.87 10.822 9.24 9.45 9.2 0.6 0.62 
Close Modal

or Create an Account

Close Modal
Close Modal