error_mesh_criteria.h

Go to the documentation of this file.

// KRATOS  ___|  |                   |                   |
//       \___ \  __|  __| |   |  __| __| |   |  __| _` | |
//             | |   |    |   | (    |   |   | |   (   | |
//       _____/ \__|_|   \__,_|\___|\__|\__,_|_|  \__,_|_| MECHANICS
//
//  License:         BSD License
//                   license: StructuralMechanicsApplication/license.txt
//
//  Main authors:    Anna Rehr
//                   Vicente Mataix Ferrandiz
//
 
#pragma once
 
// System includes
 
// External includes
 
// Project includes
#include "includes/model_part.h"
#include "includes/kratos_parameters.h"
#include "utilities/color_utilities.h"
#include "solving_strategies/convergencecriterias/convergence_criteria.h"
 
// Processes
#include "custom_processes/spr_error_process.h"
 
namespace Kratos
{
 
 
 
 
 
 
template<class TSparseSpace, class TDenseSpace>
class ErrorMeshCriteria
    : public ConvergenceCriteria< TSparseSpace, TDenseSpace >
{
public:
 
    KRATOS_CLASS_POINTER_DEFINITION( ErrorMeshCriteria );
 
    typedef ConvergenceCriteria< TSparseSpace, TDenseSpace >        BaseType;
 
    typedef TSparseSpace                                     SparseSpaceType;
 
    typedef typename BaseType::TDataType                           TDataType;
 
    typedef typename BaseType::DofsArrayType                   DofsArrayType;
 
    typedef typename BaseType::TSystemMatrixType           TSystemMatrixType;
 
    typedef typename BaseType::TSystemVectorType           TSystemVectorType;
 
    typedef ModelPart::ConditionsContainerType           ConditionsArrayType;
 
    typedef ModelPart::NodesContainerType                     NodesArrayType;
 
    typedef std::size_t                                              KeyType;
 
    typedef std::size_t                                             SizeType;
 
 
 
    explicit ErrorMeshCriteria(Parameters ThisParameters = Parameters(R"({})"))
        : ConvergenceCriteria< TSparseSpace, TDenseSpace >(),
          mThisParameters(ThisParameters)
    {
        Parameters default_parameters = Parameters(R"(
        {
            "error_mesh_tolerance" : 5.0e-3,
            "error_mesh_constant"  : 5.0e-3,
            "compute_error_extra_parameters":
            {
                "echo_level"                          : 0
            }
        })" );
 
        mThisParameters.ValidateAndAssignDefaults(default_parameters);
 
        mErrorTolerance = mThisParameters["error_mesh_tolerance"].GetDouble();
        mConstantError = mThisParameters["error_mesh_constant"].GetDouble();
 
    }
 
    ErrorMeshCriteria( ErrorMeshCriteria const& rOther )
      :BaseType(rOther)
      ,mErrorTolerance(rOther.mErrorTolerance)
      ,mConstantError(rOther.mConstantError)
    {
    }
 
    ~ErrorMeshCriteria() override = default;
 
 
    void Initialize(ModelPart& rModelPart) override
    {
        BaseType::Initialize(rModelPart);
    }
 
    bool PostCriteria(
        ModelPart& rModelPart,
        DofsArrayType& rDofSet,
        const TSystemMatrixType& A,
        const TSystemVectorType& Dx,
        const TSystemVectorType& b
        ) override
    {
        // The process info
        const ProcessInfo& process_info = rModelPart.GetProcessInfo();
 
        // Computing error
        if (process_info[DOMAIN_SIZE] == 2) {
            SPRErrorProcess<2> compute_error_process = SPRErrorProcess<2>(rModelPart, mThisParameters["compute_error_extra_parameters"]);
            compute_error_process.Execute();
        } else {
            SPRErrorProcess<3> compute_error_process = SPRErrorProcess<3>(rModelPart, mThisParameters["compute_error_extra_parameters"]);
            compute_error_process.Execute();
        }
 
        // We get the estimated error
        const double estimated_error = process_info[ERROR_RATIO];
 
        // We check if converged
        const bool converged_error = (estimated_error > mErrorTolerance) ? false : true;
 
        if (converged_error) {
            KRATOS_INFO_IF("ErrorMeshCriteria", rModelPart.GetCommunicator().MyPID() == 0 && this->GetEchoLevel() > 0) << "NL ITERATION: " << process_info[NL_ITERATION_NUMBER] << "\tThe error due to the mesh size: " << estimated_error << " is under the tolerance prescribed: " << mErrorTolerance << ". " << BOLDFONT(FGRN("No remeshing required")) << std::endl;
        } else {
            KRATOS_INFO_IF("ErrorMeshCriteria", rModelPart.GetCommunicator().MyPID() == 0 && this->GetEchoLevel() > 0)
            << "NL ITERATION: " << process_info[NL_ITERATION_NUMBER] << "\tThe error due to the mesh size: " << estimated_error << " is bigger than the tolerance prescribed: " << mErrorTolerance << ". "<< BOLDFONT(FRED("Remeshing required")) << std::endl;
        }
 
        return converged_error;
    }
 
 
 
 
 
protected:
 
 
 
 
 
 
 
 
private:
 
 
    Parameters mThisParameters; 
 
    double mErrorTolerance;     
    double mConstantError;      
 
 
 
 
 
 
 
}; // Class ErrorMeshCriteria
 
 
}  // namespace Kratos