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Homework Help: Lagrangian for vortex

  1. Jun 13, 2015 #1
    1. The problem statement, all variables and given/known data

    Do you know how to find Lagrangian for 2D Vortices?
    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Jun 15, 2015 #2


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    Education Advisor
    Gold Member

    Welcome to the forum.

    You are going to want to read the notes on here about how to post. Because you are posting in a homework help forum you need to follow certain rules.

    A vortex is a solution to equations of motion. A Lagrangian is a way of expressing the equations of motion for a particular system. That is, you are putting things a bit out of order. A Lagrangian is not "for 2D vortices." It is the Lagrangian of a certain system, and some systems happen to have vortex solutions.

    Maybe you meant: Can we name a system that exhibits vortices? And what is the Lagrangian for that system? And how can one calculate a vortex in that system?

    First part is easy, if you count a smoke ring as a vortex.

    For the rest, you should go back and ask your question correctly.
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