[petsc-users] Pseudo time stepping

[Dharmendar Reddy]

Hello,
I need to slove a nonlinear problem :
F(x)= 0  with x = xd specified on the boundary. I have setup an snes based
solver. I need to modify it to handle the situation described below.

The bc value xd  takes a set of values
xd = {x1, x2 ......., xn}, xj > xi for j > i .

Parametrising xd(t)= x1 + (xn - x1) * t  such that by selcting t between 0
and 1 I get all the xd values mentioned above.

I want the solver to automatically increase or decrease the t based on
convergence criteria ( i.e., go back to earlier converged step and try
again with a smaller step, ofcourse report divergence if the step size is
smaller than a specified minimum step size) and solve system of equations.

Can I setup this problem as a TS ?
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