Calling solve() again after a successful solution no longer automatically
triggers a Jacobian update. This enables relatively efficient sensitivity
analysis by sequentially perturbing the reaction multipliers and re-solving
the system. Since the perturbed system is close to the orignal, the solution
can be found after only a few steps, even when using the original Jacobian.
Sometimes, while trying to solve the steady-state problem, the Newton solver
would get stuck in a loop where it couldn't find a suitable damping ratio even
after re-revaluating the Jacobian, causing it to get stuck in an loop where it
would keep re-evaluating the Jacobian at the same point (i.e. without having
made a successful damped step).
This change detects this condition and stops the Newton solver so that the 1D
solver can advance the solution by timestepping before trying to solve the
steady-state problem again.
These changes make it unnecessary to copy header files around during
the build process, which tends to confuse IDEs and debuggers. The
headers which comprise Cantera's external C++ interface are now in
the 'include' directory.
All of the samples and demos are now in the 'samples' subdirectory.
2012-02-12 02:27:14 +00:00
Renamed from Cantera/src/oneD/MultiNewton.cpp (Browse further)