本文整理汇总了C++中Transient::preStep方法的典型用法代码示例。如果您正苦于以下问题：C++ Transient::preStep方法的具体用法？C++ Transient::preStep怎么用？C++ Transient::preStep使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Transient的用法示例。
在下文中一共展示了Transient::preStep方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: swapper
bool
TransientMultiApp::solveStep(Real dt, Real target_time, bool auto_advance)
{
if (!_has_an_app)
return true;
_auto_advance = auto_advance;
_console << "Solving MultiApp " << name() << std::endl;
// "target_time" must always be in global time
target_time += _app.getGlobalTimeOffset();
Moose::ScopedCommSwapper swapper(_my_comm);
bool return_value = true;
// Make sure we swap back the communicator regardless of how this routine is exited
try
{
int rank;
int ierr;
ierr = MPI_Comm_rank(_orig_comm, &rank);
mooseCheckMPIErr(ierr);
for (unsigned int i = 0; i < _my_num_apps; i++)
{
FEProblemBase & problem = appProblemBase(_first_local_app + i);
Transient * ex = _transient_executioners[i];
// The App might have a different local time from the rest of the problem
Real app_time_offset = _apps[i]->getGlobalTimeOffset();
// Maybe this MultiApp was already solved
if ((ex->getTime() + app_time_offset + 2e-14 >= target_time) ||
(ex->getTime() >= ex->endTime()))
continue;
if (_sub_cycling)
{
Real time_old = ex->getTime() + app_time_offset;
if (_interpolate_transfers)
{
AuxiliarySystem & aux_system = problem.getAuxiliarySystem();
System & libmesh_aux_system = aux_system.system();
NumericVector<Number> & solution = *libmesh_aux_system.solution;
NumericVector<Number> & transfer_old = libmesh_aux_system.get_vector("transfer_old");
solution.close();
// Save off the current auxiliary solution
transfer_old = solution;
transfer_old.close();
// Snag all of the local dof indices for all of these variables
AllLocalDofIndicesThread aldit(libmesh_aux_system, _transferred_vars);
ConstElemRange & elem_range = *problem.mesh().getActiveLocalElementRange();
Threads::parallel_reduce(elem_range, aldit);
_transferred_dofs = aldit._all_dof_indices;
}
// Disable/enable output for sub cycling
problem.allowOutput(_output_sub_cycles); // disables all outputs, including console
problem.allowOutput<Console>(_print_sub_cycles); // re-enables Console to print, if desired
ex->setTargetTime(target_time - app_time_offset);
// unsigned int failures = 0;
bool at_steady = false;
if (_first && !_app.isRecovering())
problem.advanceState();
bool local_first = _first;
// Now do all of the solves we need
while ((!at_steady && ex->getTime() + app_time_offset + 2e-14 < target_time) ||
!ex->lastSolveConverged())
{
if (local_first != true)
ex->incrementStepOrReject();
local_first = false;
ex->preStep();
ex->computeDT();
if (_interpolate_transfers)
{
// See what time this executioner is going to go to.
Real future_time = ex->getTime() + app_time_offset + ex->getDT();
// How far along we are towards the target time:
Real step_percent = (future_time - time_old) / (target_time - time_old);
//.........这里部分代码省略.........