[COMSOL_Users] Re: RF modelling change from axial symmetry to 2D no symmetry

[s***@ymail.com]

any solutions?

same problem in 43a !!
Ex and Beta..
Ex=amplitude/x
amplitude=sqrt(power.sqrt(mu/epsi)/(pi.sqrt(eps).ln(D/d)) ?
Beta=omega.sqrt(mu.epsi) ?

thanks

how to see the variables in comsol? how is mu written? emw.mu0.mur?

Hello,
I have just started Comsol simulating a few weeks ago. I have been
successful with using the RF module to simulate an RF generator
heating tissue through a dielectric. I was using an axial symmetry
workspace and defined one boundary as the port with coaxial wave
excitation. I needed to change the symmetry in the geometry (not a
symmetrical coax cable anymore) and therefore changed the workspace
from axial symmetry to 2D and completed the geometry to reflect that
(basically changed the workspace and added the mirror image in
gemoetry). Changing the workspace changed some of the boundary
conditions in the sense that I am no longer able to choose a coax
option for Port setting. Now, my RF generator is not heating anymore.
Can anyone help me with this...??
Thanks,
Radha

[Mike Mi]

About the variables, in the COMSOL Multiphysics window, you can check the "Equation View" 
by clicking the "show" button (an eys symbol), then chose "Equation View". In the "Equation View" ,
there is a "Variables" section for each "physics" you added in your programe.
 
Also, you can check "C:\Program Files\COMSOL\COMSOL43a\doc\pdf\mph\COMSOLMultiphysicsUsersGuide.pdf
P153 and P158" for more information.
 
good luck!
 


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发送日期 2013幎1月23日, 星期䞉, 1:16 䞋午
䞻题: [COMSOL_Users] Re: RF modelling change from axial symmetry to 2D no symmetry


 

any solutions?

same problem in 43a !!
Ex and Beta..
Ex=amplitude/x
amplitude=sqrt(power.sqrt(mu/epsi)/(pi.sqrt(eps).ln(D/d)) ?
Beta=omega.sqrt(mu.epsi) ?

thanks

how to see the variables in comsol? how is mu written? emw.mu0.mur?

Hello,
I have just started Comsol simulating a few weeks ago. I have been
successful with using the RF module to simulate an RF generator
heating tissue through a dielectric. I was using an axial symmetry
workspace and defined one boundary as the port with coaxial wave
excitation. I needed to change the symmetry in the geometry (not a
symmetrical coax cable anymore) and therefore changed the workspace
from axial symmetry to 2D and completed the geometry to reflect that
(basically changed the workspace and added the mirror image in
gemoetry). Changing the workspace changed some of the boundary
conditions in the sense that I am no longer able to choose a coax
option for Port setting. Now, my RF generator is not heating anymore.
Can anyone help me with this...??
Thanks,
Radha