Seepage calculation for flow net

  • Thread starter tzx9633
  • Start date
  • #1
tzx9633

Homework Statement


In the 3rd pictures , it's stated that q ( flow rate) = vA = kiA , so , i = hydraulic gradiene = difference in head between 2 points/ length . But , i am not sure why A ( area) is given by $$l_1$$ , $$l_2$$ and $$l_3$$ only ?

Homework Equations




The Attempt at a Solution



I think the author is wrong . It should be ($$l_1$$^ 2 ) ... instead , because it's forming the square elements( in 2nd picture) . Correct me if i am wrong .[/B]
 

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Answers and Replies

  • #2
tzx9633
Or the area is considered as length here ? So, only $$l1$$ , $$l2$$ and $$l3$$ are considered ??
 
  • #3
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The other length forming the area is not the other side of the square. The area A is oriented perpendicular to the direction of seepage, and the other length is "into the page." They are getting the seepage flow per unit width into the page.
 
  • #4
tzx9633
They are getting the seepage flow per unit width into the page.
Thanks !
 

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