Hi,
I am working through the tutorial of the bent waveguide that uses the VectorHelholtz solver and am a little confused by the boundary condition values given to the boundaries,
Why is the Electric Robin Coeffcient im for the output equal to $beta0? Because isn't the outport suppose to be assigned an absorbing boundary condition and by consulting the Models manual it says that it should be omega*sqrt(e_0*mu_0).
Bent Waveguide VectorHelmholtz solver Tutorial
Re: Bent Waveguide VectorHelmholtz solver Tutorial
Does anyone know why it is like this? Any information will be helpful as I am still confused!
Re: Bent Waveguide VectorHelmholtz solver Tutorial
Hi,
I suppose that the model that the tutorial uses implicitly is the total-field/scattered-field formalism and it assumes that scattered field and primary field are some waveguide modes (probably TE_01).
I suppose that the model that the tutorial uses implicitly is the total-field/scattered-field formalism and it assumes that scattered field and primary field are some waveguide modes (probably TE_01).
Re: Bent Waveguide VectorHelmholtz solver Tutorial
Hi thanks for your answer,
but how does equating the Electric robin coefficient yeild the primary and scattered fields to be waveguide modes?
but how does equating the Electric robin coefficient yeild the primary and scattered fields to be waveguide modes?
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Re: Bent Waveguide VectorHelmholtz solver Tutorial
You are making better progress than me. I just installed Elmer on Windows using nightlybuild from github. I cannot find the waveguide_bend.step file...... What folder is that? I fear that I have a mal-installation.
Duh.... Found it. The folder was not where I was expecting
D:\Program Files (x86)\Elmer 8.3-c30fff2\share\ElmerGUI\samples\step
and the file name was
bent_waveguide.step
Ok. That was the easy bit. Now I just need to get it to converge. I've attached the SIF file. I get the error that
WARNING:: LoadInputFile: > Equation 1 < not used in any Body!
Duh^2... I saw this note online.
Duh.... Found it. The folder was not where I was expecting
D:\Program Files (x86)\Elmer 8.3-c30fff2\share\ElmerGUI\samples\step
and the file name was
bent_waveguide.step
Ok. That was the easy bit. Now I just need to get it to converge. I've attached the SIF file. I get the error that
WARNING:: LoadInputFile: > Equation 1 < not used in any Body!
Duh^2... I saw this note online.
Now it runsAfter making changes in the GUI, you must always generate the SIF and save the project before re-running the solver with these changes (in this order!)
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