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* [1] Meineke, et al., J. Comp. Chem. 26, 252-271 (2005). |
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* [2] Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006). |
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* [3] Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008). |
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* [4] Vardeman & Gezelter, in progress (2009). |
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* [4] Kuang & Gezelter, J. Chem. Phys. 133, 164101 (2010). |
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* [5] Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011). |
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*/ |
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/** |
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#include "integrators/VelocityVerletIntegrator.hpp" |
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#include "integrators/DLM.hpp" |
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#include "utils/StringUtils.hpp" |
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#include "utils/ProgressBar.hpp" |
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namespace OpenMD { |
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VelocityVerletIntegrator::VelocityVerletIntegrator(SimInfo *info) : Integrator(info), rotAlgo(NULL) { |
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void VelocityVerletIntegrator::initialize(){ |
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forceMan_->init(); |
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forceMan_->initialize(); |
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// remove center of mass drift velocity (in case we passed in a |
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// configuration that was drifting) |
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velocitizer_->removeComDrift(); |
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// initialize the forces before the first step |
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calcForce(true, true); |
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calcForce(); |
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// execute the constraint algorithm to make sure that the system is |
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// constrained at the very beginning |
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if (info_->getNGlobalConstraints() > 0) { |
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rattle->constraintA(); |
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calcForce(true, true); |
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calcForce(); |
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rattle->constraintB(); |
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//copy the current snapshot to previous snapshot |
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info_->getSnapshotManager()->advance(); |
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dumpWriter->writeDumpAndEor(); |
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progressBar = new ProgressBar(); |
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//save statistics, before writeStat, we must save statistics |
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thermo.saveStat(); |
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saveConservedQuantity(); |
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needStress = false; |
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} |
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void VelocityVerletIntegrator::doIntegrate() { |
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integrateStep(); |
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postStep(); |
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} |
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finalize(); |
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} |
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statWriter->writeStat(currentSnapshot_->statData); |
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progressBar->setStatus(currentSnapshot_->getTime(), runTime); |
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progressBar->update(); |
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needPotential = false; |
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needStress = false; |
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currStatus += statusTime; |
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void VelocityVerletIntegrator::integrateStep() { |
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moveA(); |
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calcForce(needPotential, needStress); |
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calcForce(); |
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moveB(); |
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} |
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void VelocityVerletIntegrator::calcForce(bool needPotential, |
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bool needStress) { |
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forceMan_->calcForces(needPotential, needStress); |
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void VelocityVerletIntegrator::calcForce() { |
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forceMan_->calcForces(); |
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} |
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DumpWriter* VelocityVerletIntegrator::createDumpWriter() { |