On 10/2/2013 9:34 AM, Roya wrote: > Hi there, > I have a system of nonlinear equations that need to be solved > simultaneously. The result of these equations, then is needed to be > incorporated to a system of PDEs. I know that for the first part I can > use "Fsolve", and for the second one I can use "pdetool" but I don't > know if i want to link them, that is solve all the equations as one > system, how that would be possible.
I am not sure exactly what you mean. Is it really possible to first solve the nonlinear equations, then feed the result into PDE functions? If so, then I think you should do it that way, because solving a larger simultaneous equation-PDE system is bound to take more time and memory.
And "pdetool" is the graphical user interface for the PDE functions. You can certainly do everything at the command line if you like, and that might make it easier to "glue" the two problems together, the nonlinear equations and the PDE. Take a look at the PDE Problem Setup section of the documentation: http://www.mathworks.com/help/pde/index.html
Alan Weiss MATLAB mathematical toolbox documentation