Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Issue regarding coupling piezoelectric and Fluid surface interaction

Please login with a confirmed email address before reporting spam

Hello,

I am trying to simulate piezo actuated valve. I am having some problems with couplaing piezo and fluid surface interaction. I have used moving mesh for fluid domain however, the fluid domain does not seem to move according to the structural deformation (caused by piezo). I have used fully coupled along with iterative solver. However, I seem to get this error.

  • Feature: Stationary Solver 1 (sol6/s1) Undefined value found.
    • Detail: Undefined value found in the equation residual vector. There are 218 degrees of freedom giving NaN/Inf in the vector for the variable comp1.spatial.u. at coordinates: (-0.00045691,-0.0002), (-0.000503455,-0.0002), (-0.000410365,-0.0002), (-0.000496554,-0.000191171), (-0.000451259,-0.000190817), ...

There are 218 degrees of freedom giving NaN/Inf in the vector for the variable comp1.spatial.v. at coordinates: (-0.00045691,-0.0002), (-0.000503455,-0.0002), (-0.000410365,-0.0002), (-0.000496554,-0.000191171), (-0.000451259,-0.000190817), ...

Can someone please let me know what could be the problem?



0 Replies Last Post 03.08.2020, 11:27 GMT-4
COMSOL Moderator

Hello Shrutika Agarwal

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.