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Lagrangian for vortex

  • #1

Homework Statement



Hello,
Do you know how to find Lagrangian for 2D Vortices?

Homework Equations




The Attempt at a Solution

 

Answers and Replies

  • #2
DEvens
Education Advisor
Gold Member
1,203
452
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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