Manning’s equation to calculate velocity and discharge for a rectangular open channel

Worked example of how to calculate mean velocity and discharge for a rectangular open channel using Mannings equation

[@fluidsexplained1901]

Check out new content on this channel about the flume I built in my office:
ruclips.net/video/sppaBqpIT-w/видео.html

[@SACHINKUMAR-pu3fs]

THIS IS THE BEST CONCEPT, I am your subscriber from INDIA .

[@fluidsexplained1901]

Thanks!

[@kopanokatebela8842]

@@fluidsexplained1901 GREAT from south africa

[@adesokantitilope3152]

Nice one
Practically,is 'n' and 's' will be given
If not,what are conditions or code to get those values if not given
Or are they constant values

[@fluidsexplained1901]

I am currently working on a new hydraulics lesson series, using models and real world examples. The first part of the first lesson can be found here:
ruclips.net/video/EYvudBeHhWQ/видео.html

[@123Ismael]

Thank you very much indeed, helped a lot .

[@fluidsexplained1901]

Glad it helped!

[@jamalfuzail4369]

If flow (Q) is given or known what is the formula to calculate cross sectional area for a concrete channel. Kindly answer. Thank you.

[@liagitakha1314]

What if the width of the x-section isn't given.. Only depth, bed slope, n is given. And in question it is asked to estimate discharge. Its a rectangular channel.

[@tariqulislam4098]

calculate the normal and critical depth for a rectangular channel having discharge per width is 3 m^3/l. mannings co efficient is 0.025

[@danielcuevas3276]

thanks

[@naomiokemwa7167]

Good 👍 now I have a clue

[@fluidsexplained1901]

Thanks for the comment!

[@jamalfuzail4369]

Say flow (Q) knows is 100 lit/sec.

[@FreeSoloPCgamer]

Why the fuck would you use U for velocity. I love how everyone uses their own symbols

[@fluidsexplained1901]

It’s a good question, but it is fairly standard in hydraulics and (as far as I know) applied fluid dynamics. In hydraulics, u is normal the velocity in the primary direction and v in the secondary. So in the context of pipe flow, u would be velocity along the pipe and v across the pipe.