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lagrange multipliers
Posted Jun 6, 2010, 5:37 p.m. EDT 1 Reply
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Dear all,
I used mos model and for calculation of current I needed to use lagrange multipliers as below:
Boundary expressions:
Jn=-q*lm3
Jp=q*lm4
Integration over boundary
Id=Jn+Jp
Since my geometry is deferent than the mos geometry should I change the number of lm from (lm3, lm4) to something new like (lm5, lm6)?
Actually, my question is: what is the origin of the numbers at the end of (lm)? are they related to the variables or to the dimensions and geometry of the model?
I used mos model and for calculation of current I needed to use lagrange multipliers as below:
Boundary expressions:
Jn=-q*lm3
Jp=q*lm4
Integration over boundary
Id=Jn+Jp
Since my geometry is deferent than the mos geometry should I change the number of lm from (lm3, lm4) to something new like (lm5, lm6)?
Actually, my question is: what is the origin of the numbers at the end of (lm)? are they related to the variables or to the dimensions and geometry of the model?
1 Reply Last Post Jun 7, 2010, 5:55 a.m. EDT
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Posted:
1 decade ago
Hi
the "lm#" number "#" is set by COMSOL in the order these are defined, and that depends on which physics/application mode you have turned on the weak form or not. Check the variables for your physics and use the corresponding names
Good luck
Ivar
the "lm#" number "#" is set by COMSOL in the order these are defined, and that depends on which physics/application mode you have turned on the weak form or not. Check the variables for your physics and use the corresponding names
Good luck
Ivar