Which subroutine do you recommend to solve ODEs in FORTRAN? I have used for a while LSODA, and I heard that ARKODE and FATODE are much better. Any comment? thanks in advance
Hey guys I have an exam on friday, can you please help me with these questions? I do not understand why ODE45 would not be good for a stiff problem. I mean, should it not be more suitable to use an adaptive method like ODE45 in order to get the most accurate solution for a stiff system, since it adapts its step-size according to the real solution? I know that it takes more time to obtain the solution, but it should be more accurate than ODE15s which does not have this adaptive ability and therefore increases the approximation of the solution? Am I the one understanding everything in reverse? Is the solver-choice based on the time consumption rather than accuracy?
i am sorry for the late reply but just for your knowledge , ode 45 is more generally used and its fixed solver type as he said u need a variable type solver inoder to solve for stiff systems
