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postint over multiple FEMs
Posted Oct 1, 2009, 12:14 p.m. EDT 3 Replies
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This question is regarding post processing. I am using the RF Module>Perpendicular waves>Hybrid mode waves. I wanted to know if doing the following is possible. If so, how?
I define a waveguide structure. Mesh it. Solve for the fundamental mode of the waveguide at a particular wavelength. Let us call this Sol1.
Now with the same struture (and everything else same i.e. Mesh etc) I just change the wavelength and solve again to obtain sol2.
I can do this with a Matlab script with a for loop for the wavelength.
While in the for loop I can store the fem in variables fem1 and fem2 for the two wavelengths.
Now I want to postint the product of the Pozav_rfwv (fundamental mode) of fem1 and Pozav_rfwv (fundamental mode) of fem2 over a region of the waveguide.
So basically I want to integrate the product of poynting vector for the fundamental mode @ wavelength 1 and poynting vector for the fundamental mode @ wavelength 2 for the same structure.
Is it possible to do the above?
Thanks,
Ravi
Hello RAVI TUMMIDI
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Why not trying to use "parametric solver"!!
But this : "So basically I want to integrate the product of poynting vector for the fundamental mode @ wavelength 1 and poynting vector for the fundamental mode @ wavelength 2 for the same structure." is a bit not clear!!
You want to integrate the product of the same parameter (Poynting vector) but each one of them is in different solution!!??
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Hello, I think I have a solution.
to integrate two different postevaluate quantities, I use this script and it works well.
% First, you "must" create a fem object with two applications mode (your case) or more applications.
% exemple for N application (It's my script for EMconductiveMediaDC) :
for i=1:N;
clear appl
appl.mode.class = ...;
appl.module = ...;
appl.dim={(sprintf('V%i',i))}; % My case, I solve electrical potential "V"
appl.sshape = ...;
appl.name = (sprintf('emdc%i',i)); % ...
appl.assignsuffix=(sprintf('_emdc%i',i));
clear pnt
pnt.Qj0 = ...;
pnt.ind = ...;
appl.pnt = ...;
clear bnd
bnd.type = ...;
bnd.ind = ...;
appl.bnd = ...;
clear equ
equ.sigma = ...;
equ.ind = ...;
appl.equ = equ;
fem.appl{i} = appl;
end
fem.frame = {'ref'};
fem.border = 1;
clear ode
clear units;
units.basesystem = 'SI';
ode.units = units;
fem.ode=ode;
fem=multiphysics(fem);
fem.xmesh=meshextend(fem);
% Now, you have the structure without solutions %
% I store before all fem object (two in your case) in a FEMS object :
% FEMS{1} = fem1;
% FEMS{2} = fem2; ... ; It's just to concatenate solutions
conc=[];
for i=1:N
u=FEMS{i}.sol.u;
conc=[conc , u];
end
solution=reshape(conc',[],1);
fem.sol=femsol(solution);
% Now, you have your object with all applications mode, so you can use the "postint function" %
Partial_der = postint ( fem , ' Pozav_rfwv1 * Pozav_rfwv2 ' , '' dl '' , [...] );
% Pozav_rfwv1 = application mode 1, Pozav_rfwv2 = application mode 2 %