how to calculate max flow without velocity info
how to calculate max flow without velocity info
(OP)
I need to determinate the maximum flow that can go trough an open flow channel (without measuring it) by calculating the max flow that can go through a bridge upstream. That is, I need to calculate the max flow using the area of the bridge opening and the terrain inclination.
Any thoughts?
Any thoughts?





RE: how to calculate max flow without velocity info
Obtain a copy of Open-channel Hydraulics by Ven Te Chow (my bible for opern channel hydraulics). Towards the back of the book is a section which will be useful for calculating the flow through a bridge. The only problem - you will need to read the first 300 pages to really understand what you are doing.
Good luck.
RE: how to calculate max flow without velocity info
There are a number of sheets that might be applicable.
TTFN
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RE: how to calculate max flow without velocity info
RE: how to calculate max flow without velocity info
but how can you calculate the maximum flow using the area of the bridge opening and the terrain inclination in this situation?
Patricia Lougheed
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RE: how to calculate max flow without velocity info
....additional to above, I was just contemplating before I saw your picture the situation when the stream was so strong or high the bridge didn't hold any longer...
For calculation: Either you could go the long way, or you could probably make a 'guesstimate' setting up an approximate 'static based' situation in a spreadsheet and play with variables like height of fall, max and minimum water speed and come out with a variation of very rough amounts of flow per seconds, giving at least an idea of max and min values.