Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
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.
what's different between 'frequency domain' and 'frequency domain, perturbation'?
Posted 12 lug 2013, 00:37 GMT-4 Low-Frequency Electromagnetics, Fluid & Heat, Computational Fluid Dynamics (CFD) Version 4.3 1 Reply
Please login with a confirmed email address before reporting spam
Hello guys
I'm simulating a cantilever sensor, which contains three modules, 'laminar flow', 'electric currents', and 'particle tracing in fluid flow'.
For this, in electric currents module, AC voltages are applied, with frequency of 1kHz.
As dielectrophoretic force is needed, electric currents module is solved by frequency domain.
Laminar flow is solved by stationary solver, and particle tracing in fluid flow is coupled.
When I couple stationary(spf) - frequency domain(ec) - particle trajectories(fpt), it works well.
But when I couple stationary(spf) - frequency domain, perturbation(ec) - particle trajectories(fpt), it cannot be coupled with an error of 'complex number faces in real expression' like this.
Can you tell me why perturbation solver cannot be used?
I'm simulating a cantilever sensor, which contains three modules, 'laminar flow', 'electric currents', and 'particle tracing in fluid flow'.
For this, in electric currents module, AC voltages are applied, with frequency of 1kHz.
As dielectrophoretic force is needed, electric currents module is solved by frequency domain.
Laminar flow is solved by stationary solver, and particle tracing in fluid flow is coupled.
When I couple stationary(spf) - frequency domain(ec) - particle trajectories(fpt), it works well.
But when I couple stationary(spf) - frequency domain, perturbation(ec) - particle trajectories(fpt), it cannot be coupled with an error of 'complex number faces in real expression' like this.
Can you tell me why perturbation solver cannot be used?
1 Reply Last Post 26 lug 2013, 10:48 GMT-4
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
As I know, " frequency domain, perturbation" maybe only work in the simulation about "Small-Signal Analysis", like the tutorial model "Small-Signal Analysis of an Inductor" in ACDC mode