NewtonSolver¶
-
class
dolfin.cpp.la.
NewtonSolver
(*args)¶ Bases:
dolfin.cpp.common.Variable
This class defines a Newton solver for nonlinear systems of equations of the form \(F(x) = 0\).
Overloaded versions
NewtonSolver()
Create nonlinear solver
NewtonSolver(solver, factory)
Create nonlinear solver using provided linear solver
- Arguments
- solver (
GenericLinearSolver
) The linear solver.
- factory (
GenericLinearAlgebraFactory
) The factory.
- solver (
-
static
default_parameters
()¶ Default parameter values
- Returns
Parameters
- Parameter values.
-
iteration
()¶ Return Newton iteration number
- Returns
- int
- The iteration number.
-
linear_solver
()¶ Return the linear solver
- Returns
GenericLinearSolver
- The linear solver.
-
relative_residual
()¶ Return current relative residual
- Returns
- float
- Current relative residual.
-
residual
()¶ Return current residual
- Returns
- float
- Current residual.
-
solve
()¶ Solve abstract nonlinear problem \(F(x) = 0\) for given \(F\) and Jacobian \(\dfrac{\partial F}{\partial x}\).
- Arguments
- nonlinear_function (
NonlinearProblem
) - The nonlinear problem.
- x (
GenericVector
) - The vector.
- nonlinear_function (
- Returns
- (int, bool)
- Pair of number of Newton iterations, and whether iteration converged)
-
thisown
¶ The membership flag