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how to apply a parameter(like electric potential) as the boundary condition to a surface which varies spatially over the surface
Posted May 8, 2011, 6:38 a.m. EDT Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 3.5a 2 Replies
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Can anyone tell me how to apply a parameter (line electric potential) as a boundary condition to a surface that varies along the surface in a continuous manner.Its like I want to use a surface as the top part of a resister with a current flowing along it.Since it has a current along it the potential from one side of the surface to the other drops from some to zero. I don't want to model the current it self just this variation.Also I am using comsol 3.5.
thanks in advance
cheers
vikrant
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if I understand you right, you want to write someting like
my_BC_V = V0[V]+Vslope[V/m]*s[m]
for an edge in 2D where s[m] moves from 0 to 1 along the edge in the sens of the arrow
In 3D it's probably easier, if you are aligned lets say along "x" something like
my_BC_V = V0[V]+Vslope[V]*(x-X0)/(X1-X0)
where X0 i the starting value of X and X1 the ending value
Try to look at the initial conditions before you solve the full model
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Good luck
Ivar
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