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.

meshing volume element internal problem in fluid structure

Please login with a confirmed email address before reporting spam

does anybody know about the following error

Division by zero.
- Function: /
Failed to evaluate variable.
- Variable: comp1.fsi.sigma_dg_ns
- Defined as: ((96*nojac(up(comp1.fsi.mu)))*meshvol_spatial)/comp1.fsi.meshVolInt
Failed to evaluate expression.
- Expression: (((comp1.fsi.umxTnFace*comp1.fsi.rhoFace)*(-(((zeta*(eps_inf*comp1.unit_A_cf))*(comp1.unit_s_cf^3))*(1/(u_0*(mu*(comp1.unit_m_cf*comp1.unit_kg_cf)))))))+(-(comp1.fsi.sigma_dg_ns*(-(((zeta*(eps_inf*comp1.unit_A_cf))*(comp1.unit_s_cf^3))*(1/(u_0*(mu*(comp1.unit_m_cf*comp1.unit_kg_cf)))))))))*dvol_spatial
Failed to evaluate Jacobian of expression.
- Expression: (((comp1.fsi.nymesh*(-comp1.fsi.pFace))+((comp1.fsi.umxTnFace*comp1.fsi.rhoFace)*comp1.fsi.ujumpy))+(comp1.fsi.KStressn_avy-(comp1.fsi.sigma_dg_ns*comp1.fsi.ujumpy)))*dvol_spatial
Failed to evaluate Jacobian of expression.
- Expression: (comp1.fsi.KStressn_avx*test(comp1.u_fluid)+comp1.fsi.KStressn_avy*test(comp1.v_fluid)+comp1.fsi.KStressTestn_avx*comp1.fsi.ujumpx+comp1.fsi.KStressTestn_avy*comp1.fsi.ujumpy-comp1.fsi.sigma_dg_ns*comp1.fsi.ujumpx*test(comp1.u_fluid)-comp1.fsi.sigma_dg_ns*comp1.fsi.ujumpy*test(comp1.v_fluid)+comp1.fsi.upwind_ns+comp1.fsi.upwindCont+comp1.fsi.consFlux)*(dvol_spatial)
- Feature: Time-Dependent Solver 1 (sol2/t1)

0 Replies Last Post 02.04.2016, 09:30 GMT-4
COMSOL Moderator

Hello Shirsendu Mitra

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.