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COMSOL modeling of toroidal flow

  1. Jun 6, 2009 #1
    I'm having lots of difficulty modeling toroidal flow in COMSOL. What I'm eventually getting at is a simulation of a semicircular canal, but am attacking the problem one step at a time.

    The most fundamental model would just be cylindrical flow that wraps around in a circle, w/o no inlet/outlet i.e. a toroid.

    Then I try to impart an initial radial velocity so that I can generate video watching the flow decline due to viscous forces at the wall. I've also tried to create a force field that varies w/ radius (toroid centered at (0,0) ).

    Both methods error me to no end. Some solvers at least converge, but the results look whacky.

    Any tips? Maybe a better way to model it would be a regular cylinder where the inlet's conditions were dtermined by the outlet's...?

  2. jcsd
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