The mechanical energy loss due to frictional effects (conversion to thermal energy) causes the EGL and HGL to slope downward in the direction of flow. The slope is a measure of the head loss in the pipe. A component, such as a valve, that generates significant frictional effects causes a sudden drop in both EGL and HGL at that location.
At 1:30 it looks wrong, at least in general. How is z+p/(rho*g) increasing downstream? Since v^2/2g is constant (pipe diameter is constant), that would mean you gain Energy. It has to be wrong!
2:14 If the diameter of the pipe is constant, why the velocity head change and the pressure head stay constant? Shouldn´t the velocity head be kept constant and the pressure head decrease?
elevation has increased so the potential energy increased. These increases Hydraulic grade line. Also that diagram is not totally correct . Don't focus too much on it. Focus the diagram of 3:02
@@NiLTime I guess that he is correct HGL should decrease, Elevation head doesn't matter. Because, the difference between TEL and HGL is velocity head not elevation head. But maybe you did that for Demonstration purpose. Anyway thank you it's a great video.
@alipacheco8149, you are right. Everything from 1:30 onward is wrong. Velocity is constant in time and space so HGL can only decrease in the downstream direction!!!
In minute 1.06 if the pipe different elevation (z2 > z1), and pipe diameter is constant (d1 = d2) why pressure head 1 and 2 same?. And velocity head different?, if d1 = d2 the v1 = v2, so velocity head must be constant.
that diagram is not totally correct . Made it for some visualization purpose .. sorry for that. Don't focus too much on it. Focus the diagram of 3:02 ^^
Thank you I have listened to this video many times and every time I understand a new thing.
The mechanical energy loss due to frictional effects (conversion to thermal
energy) causes the EGL and HGL to slope downward in the direction of flow. The
slope is a measure of the head loss in the pipe. A component, such as a valve,
that generates significant frictional effects causes a sudden drop in both EGL and
HGL at that location.
🤝🏻👏🏻 better than our University lecturers and their abnormal attitudes. Thanks for conveyance of science. 💙
Best video till date
Thank you so much for this! This is the best video abt HGL and EGL that I have ever watched. Understood it easily now.
Great to hear! ^^
Fabulous....this is a way to teach...
Thee way*
At 1:30 it looks wrong, at least in general. How is z+p/(rho*g) increasing downstream? Since v^2/2g is constant (pipe diameter is constant), that would mean you gain Energy. It has to be wrong!
Yeah, hgl and egl should be horizontal (no loss considered)
Thank you for your valuable explanation and crystal clear animation. I got my concepts cleared...
#KEEP UP THE GOOD WORK !!! 💐😄🍫
This is great. What software or program do you use to make your videos ?
Just love you bro
Thank for good explanation...😊
Perfect one goes here
2:14 If the diameter of the pipe is constant, why the velocity head change and the pressure head stay constant? Shouldn´t the velocity head be kept constant and the pressure head decrease?
elevation has increased so the potential energy increased. These increases Hydraulic grade line. Also that diagram is not totally correct . Don't focus too much on it. Focus the diagram of 3:02
@@NiLTime I guess that he is correct HGL should decrease, Elevation head doesn't matter. Because, the difference between TEL and HGL is velocity head not elevation head. But maybe you did that for Demonstration purpose.
Anyway thank you it's a great video.
@alipacheco8149, you are right. Everything from 1:30 onward is wrong. Velocity is constant in time and space so HGL can only decrease in the downstream direction!!!
Excellent work ❤
In minute 1.06 if the pipe different elevation (z2 > z1), and pipe diameter is constant (d1 = d2) why pressure head 1 and 2 same?. And velocity head different?, if d1 = d2 the v1 = v2, so velocity head must be constant.
that diagram is not totally correct . Made it for some visualization purpose .. sorry for that. Don't focus too much on it. Focus the diagram of 3:02 ^^
It's not the same, the pressure head is different between 1,2, and 3, the velocity head is the same in all points as the diameter is constant
Thankyou so much 🔥❤️❤️
Great explaination
Thank you!
Thank you
Thank you so much you. You are the best.
Thank you ^^
Very informative video ❤️🔥
Tq
great work brother
Great video 👍
You are best
thank you so much
welcome ^^
Thanks a lot👍
Welcome ^^
Egl never rise in real flow
Unless pump or any energy adding devise is used
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For myself, and I suspect others, a computer generated narration is an immediate turn off. Thanks anyway....
Thank you!