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How to define divergence in COMSOL 5.5?
Posted Mar 6, 2020, 11:34 AM EST Computational Fluid Dynamics (CFD), Parameters, Variables, & Functions, Equation-Based Modeling Version 5.5 1 Reply
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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:
* 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