Open Channel Flow

Рет қаралды 142,010

Martin Crapper

12 жыл бұрын

Presentation describing some of the important features of Open Channel Flow
(c) The University of Edinburgh 2007-2012

Пікірлер: 26

@mlfb01ag 3 жыл бұрын

1:18 : lab experiment 1 3:08 : lab experiment 2 Thanks a lot! Very clear. In particular, the arrows indicating the critical head on the weir are simple but precious.

@jawazik 7 жыл бұрын

Clear explanation of concepts. Well done

@maryherrera9356 Жыл бұрын

This was so helpful, and clear to understand with practical reality examples. Thank you!

@AlbyBattyTECHannel 6 жыл бұрын

I'm studying Hydraulic Engineer right now and I've realized laboratory video on open channel flow like this before, so I can say that this is a very well done video!! :D

@iamfarh Жыл бұрын

Excellent demonstration

@muneebahmad6631 5 жыл бұрын

Thank you so much it was very helpful

@UmairKhan-hx4nz 9 ай бұрын

that was so much helpful very thankful

@GordonCrapper 12 жыл бұрын

Very Good!

@arissira6086 4 жыл бұрын

Thankyou so much.

@gonegirl5817 2 жыл бұрын

very well explained with practical point of view...thank you a lot

@hiyazala8701 2 жыл бұрын

Thank you ☺️

@adityakumarnag9953 6 жыл бұрын

What are the dimensions or specific criteria to classify low slope, medium slope and large slope of open channel flow? Briefly explain?

@martincrapper 6 жыл бұрын

Those terms mean nothing to me. For a particular flow rate a slope is mild if normal depth is subcritical and steep if normal depth is supercritical. So the same geometric slope can be either depending on flow rate.

@BritishEngineer Жыл бұрын

Very nice video, I am studying hydraulic/hydrodynamic and structural civil engineering, Id like to specialise in sanitation engineering/ storm drains/culverts/anthropogenic drainage and watercourse canals.

@leonguyen9760 3 жыл бұрын

thanks for your useful video. I have a question. If the weir do not have a crest, so can we measure a flow discharge with the height of the fluid? Thanks you

@waterresourcecivilengineeringa 2 жыл бұрын

do visit my channel and comment on explanation of Reynolds number and Froude number: video link are kzfaq.info/get/bejne/adyWl9Katce3XYk.html kzfaq.info/get/bejne/fZ2VpbKpppvTpmw.html thanks

@junugurirajkumar1816 3 жыл бұрын

Thank u alot

@mureithikivuti 7 жыл бұрын

I thought the sluice gate came before the hydraulic jump??

@Hud_Adnan 4 жыл бұрын

Mureithi Kivuti hydraulic jump occurs after sluice gate but is it’s a condition not a must

@2175Wook 11 жыл бұрын

I just haven't been able to work out the following question at the moment. The cross section of a closed channel is a square with one diagonal vertical, s is the side of the square and y is the depth of the water line below the apex. Show that for maximum discharge y=0.127s and for maximum velocity y=0.414s?

@dilbagsingh4505 3 жыл бұрын

Just one question. Why we take chezzys and manning coefficient independent of fluid viscosity. i.e. According to my thinking, there will always be a fluid layer sticking to the bed (no slip condition) and the effect of bed roughness is propagated to other layers of fluid via viscosity. But both these coefficients doesn't have viscosity component in them. For example if I apply the Mannings equation for hot areas where water temp is at 30 Centigrade and in cold areas where the temperature is 5-10Centrigrade. In both, the case Mannings equation will yield the same Flow rate but I think the flow rate will be different in both cases for the same channel.. Please help me with this.

@martincrapper 3 жыл бұрын

Both are crude empirical coefficients (developed for European applications in the 19th century, or early 20th century). The roughness is such a crude parameter that variations in viscosity are insignificant. If you need that level of detail use CFD, not simple 1-D channel models.

@dilbagsingh4505 3 жыл бұрын

@@martincrapper thanks

@haroldbn6816 3 жыл бұрын

Your concerns are valid, neither manning nor Chezy take viscosity as a crucial parameter.