void AdaptiveTimeStepping::
init(const parameter::ParameterGroup& param)
{
// valid are "pid" and "pid+iteration"
std::string control = param.getDefault("timestep.control", std::string("pid") );
// iterations is the accumulation of all linear iterations over all newton steops per time step
const int defaultTargetIterations = 30;
const double tol = param.getDefault("timestep.control.tol", double(1e-1) );
if( control == "pid" ) {
timeStepControl_ = TimeStepControlType( new PIDTimeStepControl( tol ) );
}
else if ( control == "pid+iteration" )
{
const int iterations = param.getDefault("timestep.control.targetiteration", defaultTargetIterations );
timeStepControl_ = TimeStepControlType( new PIDAndIterationCountTimeStepControl( iterations, tol ) );
}
else if ( control == "iterationcount" )
{
const int iterations = param.getDefault("timestep.control.targetiteration", defaultTargetIterations );
const double decayrate = param.getDefault("timestep.control.decayrate", double(0.75) );
const double growthrate = param.getDefault("timestep.control.growthrate", double(1.25) );
timeStepControl_ = TimeStepControlType( new SimpleIterationCountTimeStepControl( iterations, decayrate, growthrate ) );
} else if ( control == "hardcoded") {
const std::string filename = param.getDefault("timestep.control.filename", std::string("timesteps"));
timeStepControl_ = TimeStepControlType( new HardcodedTimeStepControl( filename ) );
}
else
OPM_THROW(std::runtime_error,"Unsupported time step control selected "<< control );
// make sure growth factor is something reasonable
assert( growth_factor_ >= 1.0 );
}
AdaptiveTimeStepping::AdaptiveTimeStepping( const parameter::ParameterGroup& param )
: timeStepControl_()
, restart_factor_( param.getDefault("solver.restartfactor", double(0.1) ) )
, growth_factor_( param.getDefault("solver.growthfactor", double(1.25) ) )
// default is 1 year, convert to seconds
, max_time_step_( unit::convert::from(param.getDefault("timestep.max_timestep_in_days", 365.0 ), unit::day) )
, solver_restart_max_( param.getDefault("solver.restart", int(3) ) )
, solver_verbose_( param.getDefault("solver.verbose", bool(false) ) )
, timestep_verbose_( param.getDefault("timestep.verbose", bool(false) ) )
, last_timestep_( -1.0 )
{
// valid are "pid" and "pid+iteration"
std::string control = param.getDefault("timestep.control", std::string("pid+iteration") );
// iterations is the accumulation of all linear iterations over all newton steops per time step
const int defaultTargetIterations = 30;
const double tol = param.getDefault("timestep.control.tol", double(1e-3) );
if( control == "pid" ) {
timeStepControl_ = TimeStepControlType( new PIDTimeStepControl( tol ) );
}
else if ( control == "pid+iteration" )
{
const int iterations = param.getDefault("timestep.control.targetiteration", defaultTargetIterations );
const double maxgrowth = param.getDefault("timestep.control.maxgrowth", double(3.0) );
timeStepControl_ = TimeStepControlType( new PIDAndIterationCountTimeStepControl( iterations, tol, maxgrowth ) );
}
else if ( control == "iterationcount" )
{
const int iterations = param.getDefault("timestep.control.targetiteration", defaultTargetIterations );
const double decayrate = param.getDefault("timestep.control.decayrate", double(0.75) );
const double growthrate = param.getDefault("timestep.control.growthrate", double(1.25) );
timeStepControl_ = TimeStepControlType( new SimpleIterationCountTimeStepControl( iterations, decayrate, growthrate ) );
}
else
OPM_THROW(std::runtime_error,"Unsupported time step control selected "<< control );
// make sure growth factor is something reasonable
assert( growth_factor_ >= 1.0 );
}
