Can someone help me understand why even though I tell all my study steps under one study to use only a single physics interface the solver still tries to find dependent values for variables under the other unselected physics interfaces?
Specifically I have a model with two components. These components are actually not meant to be linked in any way, they are simply included in the same model so that I can export their results together into a single report. I understand this makes things confusing for COMSOL since it likes to couple everything but it's much easier for me to do this as long as I understand how the solvers and solutions work. And it looks like I don't.
My first component only uses the "magnetic fields (mf)" interface. My second component uses "Pressure Acoustics, Frequency Domain (acpr)" and "Electrical Circuit (cir)". In my first study step I only do a small signal analysis (stationary and freq-domain, perturbation). For both steps I only select the "mf" physics interface, but for some reason when I expand down to "Solution 1" and it's "Dependent Variables 1" I am seeing variables for "acpr" and "cir". This ends up giving me unexpected, unwanted, and empty solutions in the results.
Any idea if I'm doing something wrong, and if so, what I could be doing wrong? Is there any way I can better isolate the components from each other in the study steps, solvers, and solutions?
Also, one more question. I want to do a parametric sweep on the geometry for the stationary step only. I want to run a frequency domain, perturbation biased around the stationary solver, but only at the original resting position of the geometry. Is there a "best" why to do this? Right now I just run the stationary and parametric sweep with the freq-domain, perturbation disabled then disable the parametric sweep and run the freq-domain, perturbation.
Thanks in advance for any help.
Specifically I have a model with two components. These components are actually not meant to be linked in any way, they are simply included in the same model so that I can export their results together into a single report. I understand this makes things confusing for COMSOL since it likes to couple everything but it's much easier for me to do this as long as I understand how the solvers and solutions work. And it looks like I don't.
My first component only uses the "magnetic fields (mf)" interface. My second component uses "Pressure Acoustics, Frequency Domain (acpr)" and "Electrical Circuit (cir)". In my first study step I only do a small signal analysis (stationary and freq-domain, perturbation). For both steps I only select the "mf" physics interface, but for some reason when I expand down to "Solution 1" and it's "Dependent Variables 1" I am seeing variables for "acpr" and "cir". This ends up giving me unexpected, unwanted, and empty solutions in the results.
Any idea if I'm doing something wrong, and if so, what I could be doing wrong? Is there any way I can better isolate the components from each other in the study steps, solvers, and solutions?
Also, one more question. I want to do a parametric sweep on the geometry for the stationary step only. I want to run a frequency domain, perturbation biased around the stationary solver, but only at the original resting position of the geometry. Is there a "best" why to do this? Right now I just run the stationary and parametric sweep with the freq-domain, perturbation disabled then disable the parametric sweep and run the freq-domain, perturbation.
Thanks in advance for any help.