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Excel formula for Circular Pipe Flow, given Q/Q-full, find D/D-full.

Excel formula for Circular Pipe Flow, given Q/Q-full, find D/D-full.

Excel formula for Circular Pipe Flow, given Q/Q-full, find D/D-full.

(OP)
Can anybody please help me with excel formula for the following:

1. Given are, Manning's n, Slope S, Pipe diameter D and discharge in the circular pipe Q.

2. How can I find the flow depth "D" in the for a given discharge in the pipe "Q".

Please help.

Thanks

RE: Excel formula for Circular Pipe Flow, given Q/Q-full, find D/D-full.

I would plot three or four points on a graph with the depth on the horizontal axis and the Q,(flow), on the vertical axis.  Add more points near the location of the Q given and then interpolate.  Land Desk and other programs have flow curves equations built in, just enter the required variables.

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