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Flow in network of pipes

  1. May 23, 2016 #1
    1. The problem statement, all variables and given/known data
    from the diagram , we know that the junction is lower than the pipe at B . why the author wanna make an assumption that the junction is located at 20m from the datum ? is it correct to do so ?

    2. Relevant equations


    3. The attempt at a solution
    eventually , i found the ans is 25.2m , the delta Q is close to 0 ,
    but , i also tried with 18m , then slowly change to 16m and 14m , by using Q1+Q2 - Q3 , i found the ans is getting bigger , does it mean the junction has to be higher?


    P/s : to admin , hopefully , i moved to an appropriate place to get better response
     

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  2. jcsd
  3. May 28, 2016 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
     
  4. May 28, 2016 #3
    no , can someone reply ?
     
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