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Use of elliptic functions in COMSOL
Posted Jan 26, 2010, 7:33 a.m. EST 1 Reply
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Hello,
I have a problem regarding the use of elliptical functions in Comsol.
I plan to use Matlab's "ellipke" function:
www.mathworks.com/access/helpdesk/help/techdoc/ref/ellipke.html
whose syntax is [K,E] = ellipke(M) with M varying between 0 and 1.
In my model, I need both functions of first and second type, i.e. both K and E, to be used in the coefficients of the Physics Settings. The problem is that if I call the function "ellipke" in COMSOL, only K (first type) is
computed.
The use of script seems unavoidable. However, even in the script environment, how can I have both components calculated?
Thank you very much for your help.
Francesco
I have a problem regarding the use of elliptical functions in Comsol.
I plan to use Matlab's "ellipke" function:
www.mathworks.com/access/helpdesk/help/techdoc/ref/ellipke.html
whose syntax is [K,E] = ellipke(M) with M varying between 0 and 1.
In my model, I need both functions of first and second type, i.e. both K and E, to be used in the coefficients of the Physics Settings. The problem is that if I call the function "ellipke" in COMSOL, only K (first type) is
computed.
The use of script seems unavoidable. However, even in the script environment, how can I have both components calculated?
Thank you very much for your help.
Francesco
1 Reply Last Post Jan 27, 2010, 2:16 a.m. EST
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Posted:
1 decade ago
Hi
I'm not sure I understand correctly your point here, but itis clear in the matlab environment you can use all matlab functions, however within the COMSOL GUI's you cannot call independent matlab functions just like that.
But if the elliptic integral is part of your equations cannt you do some algebra and expand it such that you let COMSOL solve it with the rest ?
Good luck
Ivar
I'm not sure I understand correctly your point here, but itis clear in the matlab environment you can use all matlab functions, however within the COMSOL GUI's you cannot call independent matlab functions just like that.
But if the elliptic integral is part of your equations cannt you do some algebra and expand it such that you let COMSOL solve it with the rest ?
Good luck
Ivar