void Godunov::MultiPhase(const double & CFL, unsigned phase) {
double t = 0;
Cell leftCell;
Cell rightCell;
bool phaseInteraction;
while (t < getMax()) {
BoundaryConditions();
for (unsigned i = 0; i < getCell().size(); ++i) {
phaseInteraction = false;
leftCell = getCell()[i % getCell().size()];
rightCell = getCell()[(i + 1) % getCell().size()];
if (i == getCell().size() - 2)
continue;
for (unsigned j = 0; j < phase; ++j)
if (leftCell.getPhase()[j].getPhi()
!= rightCell.getPhase()[j].getPhi()) {
phaseInteraction = true;
break;
}
if (!phaseInteraction) {
for (unsigned j = 0; j < phase; ++j)
detachedRiemann(leftCell, rightCell, i, j);
}
}
computeDT(CFL);
timeIntegration();
for (unsigned i = 0; i < getCell().size(); ++i) {
setCell()[i].computeScalFromCons();
}
t += getDt();
}
}
void
Transient::execute()
{
preExecute();
// NOTE: if you remove this line, you will see a subset of tests failing. Those tests might have a wrong answer and might need to be regolded.
// The reason is that we actually move the solution back in time before we actually start solving (which I think is wrong). So this call here
// is to maintain backward compatibility and so that MOOSE is giving the same answer. However, we might remove this call and regold the test
// in the future eventually.
if (!_app.isRecovering())
_problem.copyOldSolutions();
// Start time loop...
while (true)
{
if (_first != true)
incrementStepOrReject();
_first = false;
if (!keepGoing())
break;
computeDT();
takeStep();
endStep();
_steps_taken++;
}
postExecute();
}
Real
PostprocessorDT::computeInitialDT()
{
if (_has_initial_dt)
return _initial_dt;
else
return computeDT();
}
void Godunov::Solve(const double& CFL) {
//dt_ = 0.00005;
computeDT(CFL);
if (getCell()[0].getPhase().size() == 1)
SinglePhase(CFL);
else
MultiPhase(CFL, getCell()[0].getPhase().size());
BoundaryConditions();
}
void
Transient::init()
{
if (!_time_stepper.get())
{
InputParameters pars = _app.getFactory().getValidParams("ConstantDT");
pars.set<FEProblem *>("_fe_problem") = &_problem;
pars.set<Transient *>("_executioner") = this;
/**
* We have a default "dt" set in the Transient parameters but it's possible for users to set other
* parameters explicitly that could provide a better calculated "dt". Rather than provide difficult
* to understand behavior using the default "dt" in this case, we'll calculate "dt" properly.
*/
if (!_pars.isParamSetByAddParam("end_time") && !_pars.isParamSetByAddParam("num_steps") && _pars.isParamSetByAddParam("dt"))
pars.set<Real>("dt") = (getParam<Real>("end_time") - getParam<Real>("start_time")) / static_cast<Real>(getParam<unsigned int>("num_steps"));
else
pars.set<Real>("dt") = getParam<Real>("dt");
pars.set<bool>("reset_dt") = getParam<bool>("reset_dt");
_time_stepper = MooseSharedNamespace::static_pointer_cast<TimeStepper>(_app.getFactory().create("ConstantDT", "TimeStepper", pars));
}
_problem.initialSetup();
_time_stepper->init();
if (_app.isRestarting())
_time_old = _time;
Moose::setup_perf_log.push("Output Initial Condition","Setup");
_problem.outputStep(EXEC_INITIAL);
Moose::setup_perf_log.pop("Output Initial Condition","Setup");
// If this is the first step
if (_t_step == 0)
_t_step = 1;
if (_t_step > 1) //Recover case
_dt_old = _dt;
else
{
computeDT();
// _dt = computeConstrainedDT();
_dt = getDT();
}
}
void
Transient::init()
{
if (_time_stepper == NULL)
{
InputParameters pars = _app.getFactory().getValidParams("ConstantDT");
pars.set<FEProblem *>("_fe_problem") = &_problem;
pars.set<Transient *>("_executioner") = this;
pars.set<Real>("dt") = getParam<Real>("dt");
pars.set<bool>("reset_dt") = getParam<bool>("reset_dt");
_time_stepper = static_cast<TimeStepper *>(_app.getFactory().create("ConstantDT", "TimeStepper", pars));
}
_problem.initialSetup();
_time_stepper->init();
Moose::setup_perf_log.push("Output Initial Condition","Setup");
_output_warehouse.outputInitial();
if (_output_initial)
{
_problem.output();
_problem.outputPostprocessors();
_problem.outputRestart();
}
Moose::setup_perf_log.pop("Output Initial Condition","Setup");
// If this is the first step
if (_t_step == 0)
_t_step = 1;
if (_t_step > 1) //Restart case
{
_dt_old = _dt;
}
else
{
computeDT();
// _dt = computeConstrainedDT();
_dt = getDT();
}
}
void
TimeStepper::computeStep()
{
if (_t_step < 2 || (_reset_dt && !_has_reset_dt))
{
_has_reset_dt = true;
if (converged())
_current_dt = computeInitialDT();
else
_current_dt = computeFailedDT();
}
else
{
if (converged())
_current_dt = computeDT();
else
_current_dt = computeFailedDT();
}
}
void PostdominatorTree::analyze(ir::IRKernel& kernel) {
// form a vector of the basic blocks in post-order
report("Building post-dominator tree.");
cfg = kernel.cfg();
report(" Starting with post order sequence");
// form a vector of the basic blocks in post-order
ir::ControlFlowGraph::BlockPointerVector
post_order = cfg->reverse_topological_sequence();
ir::ControlFlowGraph::reverse_pointer_iterator it = post_order.rbegin();
ir::ControlFlowGraph::reverse_pointer_iterator end = post_order.rend();
for (; it != end; ++it) {
blocks.push_back(*it);
blocksToIndex[*it] = (int)blocks.size()-1;
p_dom.push_back(-1);
report(" " << (*it)->label());
}
computeDT();
}
void
Transient::init()
{
if (!_time_stepper.get())
{
InputParameters pars = _app.getFactory().getValidParams("ConstantDT");
pars.set<FEProblem *>("_fe_problem") = &_problem;
pars.set<Transient *>("_executioner") = this;
pars.set<Real>("dt") = getParam<Real>("dt");
pars.set<bool>("reset_dt") = getParam<bool>("reset_dt");
_time_stepper = MooseSharedNamespace::static_pointer_cast<TimeStepper>(_app.getFactory().create("ConstantDT", "TimeStepper", pars));
}
_problem.initialSetup();
_time_stepper->init();
if (_app.isRestarting())
_time_old = _time;
Moose::setup_perf_log.push("Output Initial Condition","Setup");
_problem.outputStep(EXEC_INITIAL);
Moose::setup_perf_log.pop("Output Initial Condition","Setup");
// If this is the first step
if (_t_step == 0)
_t_step = 1;
if (_t_step > 1) //Recover case
_dt_old = _dt;
else
{
computeDT();
// _dt = computeConstrainedDT();
_dt = getDT();
}
}
void Godunov::SinglePhase(const double & CFL) {
double t = 0;
while (t < getMax()) {
BoundaryConditions();
for (unsigned i = 0; i < getCell().size(); ++i) {
if (i == getCell().size() - 2)
continue;
RiemannSolver riemann(getCell()[i % getCell().size()],
getCell()[(i + 1) % getCell().size()], 1);
riemann.solve();
riemann.phase_star_[0].Sample(0, setCell()[i].setPhase()[0].setU_half(),
setCell()[i].setPhase()[0].setP_half(),
setCell()[i].setPhase()[0].setD_half(), riemann.phase_star_[0].pstar[0]
, riemann.phase_star_[0].ustar[0]);
setCell()[i].setPhase()[0].InterCellFlux();
}
computeDT(CFL);
timeIntegration();
for (unsigned i = 0; i < getCell().size(); ++i) {
setCell()[i].setPhase()[0].computeScalFromCons();
}
t += getDt();
}
}
Real
FunctionDT::computeInitialDT()
{
return computeDT();
}
Real
AdaptiveTransient::computeConstrainedDT()
{
_diag.str("");
_diag.clear();
Real dt_cur = computeDT();
// Don't let the time step size exceed maximum time step size
if (dt_cur > _dtmax)
{
dt_cur = _dtmax;
_diag << "Limiting dt to dtmax: "
<< std::setw(9)
<< std::setprecision(6)
<< std::setfill('0')
<< std::showpoint
<< std::left
<< _dtmax
<< std::endl;
}
// Limit the timestep to limit change in the function
//TODO: handle conflict of this with dtmin
Real function_limited_dt = limitDTByFunction(dt_cur);
if (function_limited_dt < dt_cur)
{
dt_cur = function_limited_dt;
_diag << "Limiting dt to limit change in function. dt: "
<< std::setw(9)
<< std::setprecision(6)
<< std::setfill('0')
<< std::showpoint
<< std::left
<< dt_cur
<< std::endl;
}
// Don't allow time step size to be smaller than minimum time step size
if (dt_cur < _dtmin)
{
dt_cur = _dtmin;
_diag << "Increasing dt to dtmin: "
<< std::setw(9)
<< std::setprecision(6)
<< std::setfill('0')
<< std::showpoint
<< std::left
<< _dtmin
<< std::endl;
}
// Don't let time go beyond simulation end time
if (_time_old + dt_cur > _end_time)
{
dt_cur = _end_time - _time_old;
_diag << "Limiting dt for end time: "
<< std::setw(9)
<< std::setprecision(6)
<< std::setfill('0')
<< std::showpoint
<< std::left
<< _end_time
<< " dt: "
<< std::setw(9)
<< std::setprecision(6)
<< std::setfill('0')
<< std::showpoint
<< std::left
<< dt_cur
<< std::endl;
}
// Adjust to the next sync time if needed
if (_remaining_sync_time && _time_old + dt_cur >= _curr_sync_time_iter->first)
{
dt_cur = _curr_sync_time_iter->first - _time_old;
_synced_last_step = true;
_last_sync_type = _curr_sync_time_iter->second;
if (_last_sync_type == SYNC)
_diag << "Limiting dt for sync time: ";
else
_diag << "Limiting dt to sync with dt function time: ";
_diag << std::setw(9)
<< std::setprecision(6)
<< std::setfill('0')
<< std::showpoint
<< std::left
<< _curr_sync_time_iter->first
<< " dt: "
<< std::setw(9)
<< std::setprecision(6)
<< std::setfill('0')
<< std::showpoint
<< std::left
<< dt_cur
<< std::endl;
if (++_curr_sync_time_iter == _sync_times.end())
_remaining_sync_time = false;
_prev_dt = _dt;
}
if (_diag.str().size() > 0)
{
Moose::out << _diag.str() << std::endl;
}
return dt_cur;
}
