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Add use_update_stabilization parameter.

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This makes it easier to run without, for example for debugging.
The default is 'true', preserving existing behaviour.
This commit is contained in:
Atgeirr Flø Rasmussen 2016-01-15 11:30:07 +01:00
parent 6fed5a50c3
commit 3776ccab9e
3 changed files with 19 additions and 12 deletions
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26
opm/autodiff/BlackoilModelBase_impl.hpp
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@ -299,20 +299,22 @@ namespace detail {
// Compute the nonlinear update.
V dx = asImpl().solveJacobianSystem();
// Stabilize the nonlinear update.
bool isOscillate = false;
bool isStagnate = false;
nonlinear_solver.detectOscillations(residual_norms_history_, iteration, isOscillate, isStagnate);
if (isOscillate) {
current_relaxation_ -= nonlinear_solver.relaxIncrement();
current_relaxation_ = std::max(current_relaxation_, nonlinear_solver.relaxMax());
if (terminalOutputEnabled()) {
std::string msg = " Oscillating behavior detected: Relaxation set to "
+ std::to_string(current_relaxation_);
OpmLog::info(msg);
if (param_.use_update_stabilization_) {
// Stabilize the nonlinear update.
bool isOscillate = false;
bool isStagnate = false;
nonlinear_solver.detectOscillations(residual_norms_history_, iteration, isOscillate, isStagnate);
if (isOscillate) {
current_relaxation_ -= nonlinear_solver.relaxIncrement();
current_relaxation_ = std::max(current_relaxation_, nonlinear_solver.relaxMax());
if (terminalOutputEnabled()) {
std::string msg = " Oscillating behavior detected: Relaxation set to "
+ std::to_string(current_relaxation_);
OpmLog::info(msg);
}
}
nonlinear_solver.stabilizeNonlinearUpdate(dx, dx_old_, current_relaxation_);
}
nonlinear_solver.stabilizeNonlinearUpdate(dx, dx_old_, current_relaxation_);
// Apply the update, applying model-dependent
// limitations and chopping of the update.

2
opm/autodiff/BlackoilModelParameters.cpp
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@ -49,6 +49,7 @@ namespace Opm
solve_welleq_initially_ = param.getDefault("solve_welleq_initially",solve_welleq_initially_);
update_equations_scaling_ = param.getDefault("update_equations_scaling", update_equations_scaling_);
compute_well_potentials_ = param.getDefault("compute_well_potentials", compute_well_potentials_);
use_update_stabilization_ = param.getDefault("use_update_stabilization", use_update_stabilization_);
}
@ -67,6 +68,7 @@ namespace Opm
solve_welleq_initially_ = true;
update_equations_scaling_ = false;
compute_well_potentials_ = false;
use_update_stabilization_ = true;
}

3
opm/autodiff/BlackoilModelParameters.hpp
View File

@ -53,6 +53,9 @@ namespace Opm
/// controlled wells
bool compute_well_potentials_;
/// Try to detect oscillation or stagnation.
bool use_update_stabilization_;
/// Construct from user parameters or defaults.
explicit BlackoilModelParameters( const parameter::ParameterGroup& param );