Hello
I'm using PDE to study a fluid flow problem. My vector field is called u (defined by default). Velocity field components are called u and v ('cause 2D).
At some point I want to add an equation including divergence of my vector field. So, I've already tried:
* divu
* ux +vy
* d(u,x) + d(v,y)
When running simulation, same error always shows up: Failed to evaluate variable v or Undefined variable vy.
Does someone have an idea why it is happening?
Thanks in advance, Jhoan