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I Pressure wave through liquid in pipe

  1. Aug 31, 2016 #1
    Hello,

    I'm a bit rusty with my fluid mechanics and can't seem to find the answer anywhere. Basically I have a pressure wave travelling in a liquid at the speed of sound through a pipe of the shape shown in the attachment (basically a semicircle of constant cross sectional area and then a cone of increasing area. At point A I know the wave has planar wavefront. Is there any formula to work out the shape of the wavefront at the end of the cone at point B, which I suppose will have a slight spherical curvature due to the changing cross-sectional size of the pipe?

    Thanks
     

    Attached Files:

  2. jcsd
  3. Aug 31, 2016 #2

    boneh3ad

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    Gold Member

    There isn't really "a formula" that you can use to determine this by just plugging some numbers in. You could solve the system pretty accurately by modeling it with a wave equation and letting the wave propagate through your geometry to see how it ends up. That's quite a bit more involved than just using a formula to spit out an answer, though.
     
  4. Aug 31, 2016 #3
    Do you happen to know if a software like COMSOL or other similar programs can perform such analysis numerically?

    Thanks
     
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