[FluidDynamicsApplication] Two-fluid Navier-Stokes formulation with fractional splitting approach

applications/FluidDynamicsApplication/custom_elements/data_containers/two_fluid_fractional_navier_stokes/two_fluid_navier_stokes_fractional_convection_data.h

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+//    |  /           |
+//    ' /   __| _` | __|  _ \   __|
+//    . \  |   (   | |   (   |\__ `
+//   _|\_\_|  \__,_|\__|\___/ ____/
+//                   Multi-Physics
+//
+//  License:         BSD License
+//                   Kratos default license: kratos/license.txt
+//
+//  Main authors:    Uxue Chasco
+//
+
+
+#pragma once
+
+#include "fluid_dynamics_application_variables.h"
+#include "custom_elements/data_containers/fluid_element_data.h"
+#include "utilities/element_size_calculator.h"
+#include "custom_utilities/fluid_element_utilities.h"
+namespace Kratos {
+
+///@addtogroup FluidDynamicsApplication
+///@{
+
+///@name Kratos classes
+///@{
+
+template< size_t TDim, size_t TNumNodes >
+class TwoFluidNavierStokesFractionalConvectionData : public FluidElementData<TDim,TNumNodes, true>
+{
+public:
+
+///@name Type Definitions
+///@{
+
+using NodalScalarData = typename FluidElementData<TDim,TNumNodes, true>::NodalScalarData;
+using NodalVectorData = typename FluidElementData<TDim,TNumNodes, true>::NodalVectorData;
+using ShapeFunctionsType = typename FluidElementData<TDim, TNumNodes, true>::ShapeFunctionsType;
+using ShapeDerivativesType = typename FluidElementData<TDim, TNumNodes, true>::ShapeDerivativesType;
+using MatrixRowType = typename FluidElementData<TDim, TNumNodes, true>::MatrixRowType;
+
+static constexpr std::size_t BlockSize = TDim + 1;
+///@}
+///@name Public Members
+///@{
+
+
+NodalVectorData FractionalVelocity;
+NodalVectorData VelocityOldStep1;
+NodalVectorData VelocityOldStep2;
+NodalVectorData MeshVelocity;
+
+double DeltaTime;		   // Time increment
+double DynamicTau;         // Dynamic tau considered in ASGS stabilization coefficients
+double bdf0;
+double bdf1;
+double bdf2;
+double ElementSize;
+
+///@}
+///@name Public Operations
+///@{
+
+void Initialize(const Element& rElement, const ProcessInfo& rProcessInfo) override
+{
+
+
+    const auto& r_geometry = rElement.GetGeometry();
+    this->FillFromHistoricalNodalData(VelocityOldStep1,VELOCITY,r_geometry,1);
+    this->FillFromHistoricalNodalData(VelocityOldStep2,VELOCITY,r_geometry,2);
+    this->FillFromHistoricalNodalData(FractionalVelocity, FRACTIONAL_VELOCITY, r_geometry, 0);
+    this->FillFromHistoricalNodalData(MeshVelocity,MESH_VELOCITY, r_geometry, 0);
+    this->FillFromProcessInfo(DeltaTime,DELTA_TIME,rProcessInfo);
+    this->FillFromProcessInfo(DynamicTau,DYNAMIC_TAU,rProcessInfo);
+    const Vector& BDFVector = rProcessInfo[BDF_COEFFICIENTS];
+    bdf0 = BDFVector[0];
+    bdf1 = BDFVector[1];
+    bdf2 = BDFVector[2];
+}
+
+void UpdateGeometryValues(
+    unsigned int IntegrationPointIndex,
+    double NewWeight,
+    const MatrixRowType& rN,
+    const BoundedMatrix<double, TNumNodes, TDim>& rDN_DX) override
+{
+    FluidElementData<TDim,TNumNodes, true>::UpdateGeometryValues(IntegrationPointIndex, NewWeight,rN,rDN_DX);
+    ElementSize = ElementSizeCalculator<TDim,TNumNodes>::GradientsElementSize(rDN_DX);
+}
+
+static int Check(const Element& rElement, const ProcessInfo& rProcessInfo)
+{
+    const auto& r_geometry = rElement.GetGeometry();
+    for (unsigned int i = 0; i < TNumNodes; i++)
+    {
+
+        KRATOS_CHECK_VARIABLE_IN_NODAL_DATA(FRACTIONAL_VELOCITY, r_geometry[i]);
+
+    }
+
+    return 0;
+}
+
+///@}
+
+};
+
+///@}
+
+///@}
+
+}

applications/FluidDynamicsApplication/custom_elements/data_containers/two_fluid_fractional_navier_stokes/two_fluid_navier_stokes_fractional_convection_element_data.h

@@ -0,0 +1,112 @@
+//    |  /           |
+//    ' /   __| _` | __|  _ \   __|
+//    . \  |   (   | |   (   |\__ `
+//   _|\_\_|  \__,_|\__|\___/ ____/
+//                   Multi-Physics
+//
+//  License:         BSD License
+//                   Kratos default license: kratos/license.txt
+//
+//  Main authors:    Uxue Chasco
+//
+
+
+#pragma once
+
+#include "fluid_dynamics_application_variables.h"
+#include "custom_elements/data_containers/fluid_element_data.h"
+#include "utilities/element_size_calculator.h"
+#include "custom_utilities/fluid_element_utilities.h"
+namespace Kratos {
+
+///@addtogroup FluidDynamicsApplication
+///@{
+
+///@name Kratos classes
+///@{
+
+template< size_t TDim, size_t TNumNodes >
+class TwoFluidNavierStokesFractionalConvectionData : public FluidElementData<TDim,TNumNodes, true>
+{
+public:
+
+///@name Type Definitions
+///@{
+
+using NodalScalarData = typename FluidElementData<TDim,TNumNodes, true>::NodalScalarData;
+using NodalVectorData = typename FluidElementData<TDim,TNumNodes, true>::NodalVectorData;
+using ShapeFunctionsType = typename FluidElementData<TDim, TNumNodes, true>::ShapeFunctionsType;
+using ShapeDerivativesType = typename FluidElementData<TDim, TNumNodes, true>::ShapeDerivativesType;
+using MatrixRowType = typename FluidElementData<TDim, TNumNodes, true>::MatrixRowType;
+
+static constexpr std::size_t BlockSize = TDim + 1;
+///@}
+///@name Public Members
+///@{
+
+
+NodalVectorData FractionalVelocity;
+NodalVectorData VelocityOldStep1;
+NodalVectorData VelocityOldStep2;
+NodalVectorData MeshVelocity;
+
+double DeltaTime;		   // Time increment
+double DynamicTau;         // Dynamic tau considered in ASGS stabilization coefficients
+double bdf0;
+double bdf1;
+double bdf2;
+double ElementSize;
+
+///@}
+///@name Public Operations
+///@{
+
+void Initialize(const Element& rElement, const ProcessInfo& rProcessInfo) override
+{
+
+
+    const auto& r_geometry = rElement.GetGeometry();
+    this->FillFromHistoricalNodalData(VelocityOldStep1,VELOCITY,r_geometry,1);
+    this->FillFromHistoricalNodalData(VelocityOldStep2,VELOCITY,r_geometry,2);
+    this->FillFromHistoricalNodalData(FractionalVelocity, FRACTIONAL_VELOCITY, r_geometry, 0);
+    this->FillFromHistoricalNodalData(MeshVelocity,MESH_VELOCITY, r_geometry, 0);
+    this->FillFromProcessInfo(DeltaTime,DELTA_TIME,rProcessInfo);
+    this->FillFromProcessInfo(DynamicTau,DYNAMIC_TAU,rProcessInfo);
+    const Vector& BDFVector = rProcessInfo[BDF_COEFFICIENTS];
+    bdf0 = BDFVector[0];
+    bdf1 = BDFVector[1];
+    bdf2 = BDFVector[2];
+}
+
+void UpdateGeometryValues(
+    unsigned int IntegrationPointIndex,
+    double NewWeight,
+    const MatrixRowType& rN,
+    const BoundedMatrix<double, TNumNodes, TDim>& rDN_DX) override
+{
+    FluidElementData<TDim,TNumNodes, true>::UpdateGeometryValues(IntegrationPointIndex, NewWeight,rN,rDN_DX);
+    ElementSize = ElementSizeCalculator<TDim,TNumNodes>::GradientsElementSize(rDN_DX);
+}
+
+static int Check(const Element& rElement, const ProcessInfo& rProcessInfo)
+{
+    const auto& r_geometry = rElement.GetGeometry();
+    for (unsigned int i = 0; i < TNumNodes; i++)
+    {
+
+        KRATOS_CHECK_VARIABLE_IN_NODAL_DATA(FRACTIONAL_VELOCITY, r_geometry[i]);
+
+    }
+
+    return 0;
+}
+
+///@}
+
+};
+
+///@}
+
+///@}
+
+}