CEEN 341 - Lecture 9 - Flow Nets
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- Опубликовано: 5 фев 2017
- This lecture talks about flow nets and how to draw them by hand. A flow net is drawn by hand as a demonstration, and various calculations including head, pressure, uplift force, and gradient are performed with it.
Critical Questions to Consider:
1) What types of things can we compute from a flow net?
2) What do the equipotential lines represent? Flow lines?
3) Why is the smallest element on a flow net associated with the largest hydraulic gradient?
Thank you so much Dr. frank,this video is way much better than my Professor’s two hours lecture
Thank you so much for this lecture and all other ones on the playlist, Dr. Frank.
Thank you very much for this lecture Dr Frank
great lecture! very-well explained.
This video is so sick!
Amazing ..... Thank you very very much
thanks GOD bless u more.........
Step by step video solutions of civil engineering questions
Hi sir thank you very much. i tried 10 hours trying to understand what my lecturer said but it took me 30 mins to und what you say!
brilliant. thanks!
i thought the music was out from my head phones at 09:15 while watching this video in my office. nice explanation.
Good job. I learned alot even if im not E speaker due to your slowly talk
Thank you so much.
Hi,
I know that one needs to ensure the areas or cells between flow lines and equipotential lines must be curvilinear squares in order to be able to draw a correct flow net.
However, what is the scientific meaning behind it? Or it is purely empirical?
Thank you very much
Good video
Thanks alot for this valuable lecture.
Good
Good
Hello guys! Can you recommend any underground flow book with solved exercises?
I wish I could access your powerpoint slides. but thanks it helped a lot.
Please someone explain what am I missing when calculating for pore pressure at drop A and at E, I got a different value from what is shown in his solution. Drop A, = 1454 psf and at E= 315 psf
@14:13 "Stop it. Get some help" micheal jordan meme. Good video btw
How can I determine number of flow line
Find here
Question. How did you find the interval 15 ft for determining the uplift force under the dam?
Nellvin Cervantes It all depends on you. It’s a personal preference, how much time time you can spare to do it.
It all depends on you. It’s a personal preference, how much time time you can spare to do it.
30:33 why did you count the boundary at the tailend side to be the 11.8 drop? The 11th equipotential line is within the soil layer NOT at the boundary.
How do you know that how many flow lines or equipotential lines are needed to be drawn?
It all depends on you. It’s a personal preference, how much time can you afford to do it.
i need software download link
sir how we draw flow net practically to get amount of seepage , please answer me sir (i am finding it from many days but i did not get it
Find here
hi sir , g0od evening.
how manage to get the 0.8H drop.?
how you able to assume 0.8H? it maybe can be 0.6 or 0.7 or 0.9?
is 0.8 given? how can we get?
it is usually given
I was a little confused by the part about the boxes being "square". Isn't it only required that the flow and potential lines intersect at right angles? Since the flow lines are of unequal total length, it would be necessary for the "boxes" to necessarily have different top and bottom lengths, but it would still be possible to draw the orthogonal intersections at right angles. One could use the average of top/bottom and left/right lines to imagine the effective "square". No??
You aren't really drawing true squares, but "quasi-squares." You need to use a lot of imagination here, but the approximate horizontal distance and vertical distance through the center of the element need to be about the same. That is what I mean by "quasi-square."