[Gmsh] ... electric field lines ...

[Matt Koch]

Hi All,

this seems to be a simple matter of solving the following equations for 
F = (Fx,Fy,Fz) as the vector (yeah right, NOTHING is EVER simple):

dx/ds = Fx/|F|
dy/ds = Fy/|F|
dz/ds = Fz/|F|

with |F| = sqrt(Fx^2 + Fy^2 + Fz^2)

Even a dumb Runge-Kutta approach could probably do. I might could give 
it a try, but I'd need to know how to write plugins (how to 
programmatically access fields calculated by GetDP, how to 
programmatically draw in GMsh, and such), and perhaps get some feedback 
from y'all on how long it might take to write a "typical" plugin? Would 
some sort of Runge-Kutta driver or other ODE solver be accessible to a 
plugin, or would that have to be developed from scratch, or pulled in 
from GSL, for example?

Thanks,

Matt Koch


Christophe Geuzaine wrote:

> Matt Koch wrote:
>
>> Hello there!
>>
>> what a wonderful program GMsh is! It takes a little while to get used 
>> to its GUI, but once you get the hang of it, it is extremely useful 
>> and intuitive! However, one thing I have not been able to figure out 
>> yet is how to make electric field lines from an electric field vector 
>> solution. I looked into the StreamLines PlugIn, but that seems to 
>> only work off of a velocity field. Any thoughts?
>
>
> Maybe this could be a good idea for a new plugin?
>
>
>>
>> Thanks,
>>
>> Matt Koch
>> mattkoch at scitex.us
>> www.scitex.us
>> _______________________________________________
>> gmsh mailing list
>> gmsh at geuz.org
>> http://www.geuz.org/mailman/listinfo/gmsh
>>
>
>