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Pathline and Streamline problem

  1. Jul 27, 2016 #1
    Screen Shot 2016-07-27 at 17.55.55.png 1. The problem statement, all variables and given/known data
    As above

    2. Relevant equations
    Not sure.

    3. The attempt at a solution
    I've only ever seen one of these problems and it was in the form of V=Axi-Ayj, so much simpler and even then it was poorly explained by the lecturer. I understand what a velocity field is but not much more.
     
  2. jcsd
  3. Jul 27, 2016 #2

    BvU

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    Hi, Abigail, :welcome:

    Try A=0 to get started. The velocity vector at point ##(1,1)## is ?
     
  4. Jul 29, 2016 #3

    BvU

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    first paragraph counts as an attempt at solution, I would say. (Choosing C as parameter is unfortunate, though, if the problem statement already has a C.)
    Can't guess what u and v are; the components of ##\vec v## ?
    You found the streamlines at t =0 from ##\vec v = Bx\hat\imath + Cy\hat\jmath##
    Aren't the streamlines for t=1 given by simply substituting t=1 and doing the same thing ?
     
  5. Jul 29, 2016 #4
    Yeah I realised that and changed it to D :) correct, u and v represent the x and y components of V. As for the subbing in t=1, thats what I thought but I cannot seem to get the correct answer (e^3/2) but I'm probably making a silly mistake somewhere and just can't see it
     
  6. Jul 30, 2016 #5

    BvU

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    Check the non-moving dashes in the first picture here (watch out for headaches).
    These dashes at fixed grid points you can draw for t=1 in your exercise. They should suggest the ##e^{3\over 2}##
     
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