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How can express the Gradient of function

Posted Aug 23, 2010, 10:22 a.m. EDT 3 Replies

MohammadHasan Khaliji Oskouei
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Hi

can you help me to express the Gradient of F=(aX,bY,cZ) in the comsol.how can i defined that?

best regard
mohammad
3 Replies Last Post Aug 24, 2010, 10:01 a.m. EDT
aboozar ghafari
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Posted: 1 decade ago Aug 23, 2010, 1:44 p.m. EDT
salam mohandes (HI..)
najursan?
I think you can use MATLAB functions in any Expression field for example i used this expression to compute divergence of electrical flux density D :
(8.85e-12)*(gradient(Ex_emdc,1)+gradient(Ey_emdc,2))
refer to MATLAB for more help about this command!
ya hagh..
salam mohandes (HI..) najursan? I think you can use MATLAB functions in any Expression field for example i used this expression to compute divergence of electrical flux density D : (8.85e-12)*(gradient(Ex_emdc,1)+gradient(Ey_emdc,2)) refer to MATLAB for more help about this command! ya hagh..
MohammadHasan Khaliji Oskouei
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Posted: 1 decade ago Aug 24, 2010, 9:52 a.m. EDT

thanks I triy

mishe khodeton ro morefi konin ya mail khodeton ro bedin
thanks I triy mishe khodeton ro morefi konin ya mail khodeton ro bedin
MohammadHasan Khaliji Oskouei
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Posted: 1 decade ago Aug 24, 2010, 10:01 a.m. EDT
i can not understand how can set it, can you explane it more ?

my another question is about the normal of function,how can i set the normal of function in the comsol?

best regard
mohammad
i can not understand how can set it, can you explane it more ? my another question is about the normal of function,how can i set the normal of function in the comsol? best regard mohammad

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