gvf calculation

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This is an example of using the standard step method to do a backwater calculation fo Standard step metho Backwater integration Values in yellow boxes are required for each different problem Enter the values and press the button Inputs Depth Area Perimeter EG (m) Sf (So-Sf)mea Flow (m3/ 11.3 1.5240 9.2918 9.1450 1.5998 0.0009 Manning n 0.025 1.4236 8.6796 8.9442 1.5105 0.0011 0.0006 Slope 0.0016 1.3530 8.2492 8.8030 1.4492 0.0013 0.0004 Width (m) 6.097 1.3090 7.9811 8.7150 1.4118 0.0014 0.0002 Initial d 1.524 1.2837 7.8264 8.6643 1.3906 0.0015 0.0001 Step (m) 150.0 1.2699 7.7423 8.6367 1.3791 0.0015 0.0001 Length (m 1950.0 1.2623 7.6964 8.6217 1.3729 0.0016 0.0000 Tolerance 0.0010 1.2589 7.6756 8.6148 1.3701 0.0016 0.0000 1.2574 7.6663 8.6118 1.3688 0.0016 0.0000 1.2567 7.6621 8.6104 1.3683 0.0016 0.0000 1.2564 7.6603 8.6098 1.3680 0.0016 0.0000 1.2563 7.6596 8.6096 1.3679 0.0016 0.0000 1.2562 7.6592 8.6095 1.3679 0.0016 0.0000 1.2562 7.6591 8.6094 1.3678 0.0016 0.0000 -2500.0 -2000.0 -1500.0 -1000 Backwater Profile Distance (m) Depth (m)

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gvf example

Transcript of gvf calculation

Sheet1This is an example of using the standard step method to do a backwater calculation for a rectangular channelStandard step methodBackwater integration

Values in yellow boxes are required for each different problemEnter the values and press the buttonInputsDepthAreaPerimeterEG (m)Sf(So-Sf)meanDelE (m)IterationsEC (m)Distance (m)Flow (m3/s)11.31.52409.29189.14501.59980.00091.59980.0Manning n0.0251.42368.67968.94421.51050.00110.0006-0.088541.5113-150.0Slope0.00161.35308.24928.80301.44920.00130.0004-0.060341.4502-300.0Width (m)6.0971.30907.98118.71501.41180.00140.0002-0.037241.4121-450.0Initial depth (m)1.5241.28377.82648.66431.39060.00150.0001-0.021131.3907-600.0Step (m)150.01.26997.74238.63671.37910.00150.0001-0.011221.3794-750.0Length (m)1950.01.26237.69648.62171.37290.00160.0000-0.005511.3736-900.0Tolerance0.00101.25897.67568.61481.37010.00160.0000-0.002511.3704-1050.01.25747.66638.61181.36880.00160.0000-0.001111.3690-1200.01.25677.66218.61041.36830.00160.0000-0.000511.3683-1350.01.25647.66038.60981.36800.00160.0000-0.000211.3680-1500.01.25637.65968.60961.36790.00160.0000-0.000111.3679-1650.01.25627.65928.60951.36790.00160.0000-0.000011.3679-1800.01.25627.65918.60941.36780.00160.0000-0.000011.3678-1950.0

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