nonlinear coupled differential equation

[chap_japan]

hi!

i want to know how to deal with the nonlinear coupled dfifferential equations? can anybody help me in that regard? if some one can paste matlab links/programs to solve the equations, it will be highly appreciated.

regards,

chap

[PerennialII]

I use Femlab from Comsol [previously a matlab module]:

http://www.comsol.com/

I think it may be problematic to find non-commercial (?) alternatives, but if anyone has some I'd be really interested as well.