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diff --git a/src/functors/lattice/blockLatticeLocalF3D.h b/src/functors/lattice/blockLatticeLocalF3D.h
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+/*  This file is part of the OpenLB library
+ *
+ *  Copyright (C) 2012 Lukas Baron, Mathias J. Krause, Albert Mink
+ *  E-mail contact: info@openlb.net
+ *  The most recent release of OpenLB can be downloaded at
+ *  <http://www.openlb.net/>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public
+ *  License along with this program; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+*/
+
+#ifndef BLOCK_LATTICE_LOCAL_F_3D_H
+#define BLOCK_LATTICE_LOCAL_F_3D_H
+
+#include "blockBaseF3D.h"
+#include "geometry/blockGeometry3D.h"
+#include "functors/analytical/indicator/indicatorBaseF3D.h"
+#include "indicator/blockIndicatorBaseF3D.h"
+#include "dynamics/smagorinskyBGKdynamics.h"
+#include "dynamics/porousBGKdynamics.h"
+
+/** Note: Throughout the whole source code directory genericFunctions, the
+ *  template parameters for i/o dimensions are:
+ *           F: S^m -> T^n  (S=source, T=target)
+ */
+
+namespace olb {
+
+template<typename T, typename DESCRIPTOR> class blockLatticeStructure3D;
+template<typename T, typename S> class ParticleIndicatorF3D;
+
+////////////////////////////////////////////////////////////////////////////////
+//// if globIC is not on the local processor, the returned vector is empty//////
+////////////////////////////////////////////////////////////////////////////////
+
+/// functor returns pointwise f population on local lattices
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeFpop3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticeFpop3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor returns pointwise dissipation density on local lattices
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeDissipation3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+protected:
+  const UnitConverter<T,DESCRIPTOR>& _converter;
+public:
+  BlockLatticeDissipation3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                            const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor returns pointwise dissipation density on local lattices
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysDissipation3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+protected:
+  const int             _overlap;
+  const UnitConverter<T, DESCRIPTOR>& _converter;
+public:
+  BlockLatticePhysDissipation3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                int overlap,
+                                const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor returns pointwise turbulent dissipation density on local lattices
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeEffevtiveDissipation3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+protected:
+  const UnitConverter<T,DESCRIPTOR>& _converter;
+  T _smagoConst;
+  LESDynamics<T, DESCRIPTOR>& _LESdynamics;
+public:
+  BlockLatticeEffevtiveDissipation3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                     const UnitConverter<T,DESCRIPTOR>& converter, T smagoConst,
+                                     LESDynamics<T, DESCRIPTOR>& LESdynamics);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor returns pointwise turbulent dissipation density on local lattices
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysEffevtiveDissipation3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+protected:
+  const UnitConverter<T,DESCRIPTOR>& _converter;
+  T _smagoConst;
+  LESDynamics<T, DESCRIPTOR>& _LESdynamics;
+public:
+  BlockLatticePhysEffevtiveDissipation3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                         const UnitConverter<T,DESCRIPTOR>& converter, T smagoConst,
+                                         LESDynamics<T, DESCRIPTOR>& LESdynamics);
+  bool operator() (T output[], const int input[]) override;
+};
+
+
+/// functor returns pointwise density rho on local lattices
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeDensity3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticeDensity3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice);
+  bool operator() (T output[], const int input[]) override;
+};
+
+
+/// functor returns pointwise velocity on local lattice
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeVelocity3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticeVelocity3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor returns pointwise external velocity (external field) on local lattice
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeExternalVelocity3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticeExternalVelocity3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice);
+  bool operator() (T output[], const int input[]);
+};
+
+/// functor returns pointwise the material no. presenting the geometry on local lattice
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeGeometry3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+  BlockGeometryStructure3D<T>& _blockGeometry;
+  int _material;
+public:
+  BlockLatticeGeometry3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                         BlockGeometryStructure3D<T>& blockGeometry, int material = -1);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor to get pointwise the rank no. + 1 on local lattice
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeRank3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticeRank3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor to get pointwise the cuboid no. + 1 on local lattice
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeCuboid3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+private:
+  // holds cuboid nmb of current block
+  int _iC;
+public:
+  BlockLatticeCuboid3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice, int iC);
+  bool operator() (T output[], const int input[]) override;
+};
+
+
+/// functor returns pointwise phys pressure from rho on local lattices
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysPressure3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+private:
+  const int _overlap;
+public:
+  BlockLatticePhysPressure3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                             int overlap,
+                             const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+};
+
+
+/// functor returns pointwise phys velocity on local lattice
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysVelocity3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+private:
+  const int  _overlap;
+  const bool _print;
+public:
+  BlockLatticePhysVelocity3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                             int overlap,
+                             const UnitConverter<T,DESCRIPTOR>& converter,
+                             bool print=false);
+  bool operator() (T output[], const int input[]) override;
+};
+
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysExternalVelocity3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticePhysExternalVelocity3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                     const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]);
+};
+
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysExternalPorosity3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+private:
+  const int _overlap;
+public:
+  BlockLatticePhysExternalPorosity3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                     int overlap,
+                                     const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]);
+};
+
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysExternalParticleVelocity3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticePhysExternalParticleVelocity3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+      const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]);
+};
+
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysExternal3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticePhysExternal3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                             T convFactorToPhysUnits, int offset, int size);
+  bool operator() (T output[], const int input[]) override;
+private:
+  T _convFactorToPhysUnits;
+  int _offset, _size;
+};
+
+/// functor returns pointwise lattice flux on local lattice
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeFlux3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+private:
+public:
+  BlockLatticeFlux3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice);
+  bool operator() (T output[3], const int input[3]) override;
+};
+
+/// functor returns pointwise strain rate on local lattice, s_ij = 1/2*(du_idr_j + du_jdr_i)
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeStrainRate3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticeStrainRate3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                           const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor returns pointwise phys strain rate on local lattice, s_ij = 1/2*(du_idr_j + du_jdr_i)
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysStrainRate3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+private:
+  const int _overlap;
+public:
+  BlockLatticePhysStrainRate3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                               int overlap,
+                               const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]);
+};
+
+/// functor returns pointwise phys force acting on a boundary with a given material on local lattice
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysBoundaryForce3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+private:
+  BlockIndicatorF3D<T>&        _indicatorF;
+  BlockGeometryStructure3D<T>& _blockGeometry;
+public:
+  BlockLatticePhysBoundaryForce3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                  BlockIndicatorF3D<T>& indicatorF,
+                                  const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor returns pointwise phys force for PSM dynamics
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePSMPhysForce3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticePSMPhysForce3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                             const UnitConverter<T,DESCRIPTOR>& converter, int mode_);
+  bool operator() (T output[], const int input[]) override;
+private:
+  Mode mode;
+};
+
+/// functor returns pointwise phys wall shear stress acting on a boundary with a given material on local lattice
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysWallShearStress3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+private:
+  BlockGeometryStructure3D<T>& _blockGeometry;
+  const int _overlap;
+  const int _material;
+  std::vector<std::vector<std::vector<std::vector<int>>>> _discreteNormal;
+  std::vector<std::vector<std::vector<std::vector<T>>>> _normal;
+  T _physFactor;
+public:
+  BlockLatticePhysWallShearStress3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                    BlockGeometryStructure3D<T>& blockGeometry,
+                                    int overlap,
+                                    int material,
+                                    const UnitConverter<T,DESCRIPTOR>& converter,
+                                    IndicatorF3D<T>& indicator);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/**
+ *  functor returns pointwise phys force acting on a indicated boundary on local lattice
+ *  see: Caiazzo, Junk: Boundary Forces in lattice Boltzmann: Analysis of MEA
+ */
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysCorrBoundaryForce3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+private:
+  BlockIndicatorF3D<T>&        _indicatorF;
+  BlockGeometryStructure3D<T>& _blockGeometry;
+public:
+  BlockLatticePhysCorrBoundaryForce3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                      BlockIndicatorF3D<T>& indicatorF,
+                                      const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+};
+
+
+/// functor to get pointwise, lattice-dependent external field
+template <typename T, typename DESCRIPTOR, typename FIELD>
+class BlockLatticeField3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticeField3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/**
+ *  functor returns pointwise, lattice-dependent porosity values in [0,1]
+ *  in combination with (Extended)PorousBGKdynamics: 0->solid, 1->fluid
+ */
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePorosity3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticePorosity3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice);
+  bool operator() (T output[], const int input[]);
+};
+
+/**
+ *  functor returns pointwise an approximation for the volume fraction
+ */
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeVolumeFractionApproximation3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+private:
+  BlockGeometryStructure3D<T>& _blockGeometry;
+  IndicatorF3D<T>& _indicator;
+  int _refinementLevel;
+  const UnitConverter<T,DESCRIPTOR>& _converter;
+  bool _insideOut;
+  T _physSubGridMinPhysRshift;
+  T _physSubGridDeltaX;
+  T _latticeSubGridVolume;
+public:
+  BlockLatticeVolumeFractionApproximation3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+      BlockGeometryStructure3D<T>& blockGeometry,
+      IndicatorF3D<T>& indicator,
+      int refinementLevel,
+      const UnitConverter<T,DESCRIPTOR>& converter, bool insideOut);
+  bool operator() (T output[], const int input[]);
+};
+
+/**
+ *  functor to get pointwise mesh-independent permeability values in (0,inf)
+ *  in combination with (Extended)PorousBGKdynamics
+ *  note: result is cropped to 999999
+ */
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysPermeability3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticePhysPermeability3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice, const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]);
+};
+
+
+/**
+ *  functor to get pointwise mesh-independent permeability values in (0,inf)
+ *  in combination with (Extended)PorousBGKdynamics
+ *  note: result is cropped to 1
+ */
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysCroppedPermeability3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticePhysCroppedPermeability3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice, const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]);
+};
+
+//TODO: consistency with 2D (181219)
+/*
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysPermeability3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+private:
+  BlockGeometry3D<T>& _blockGeometry;
+  int _material;
+public:
+  BlockLatticePhysPermeability3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                 BlockGeometry3D<T>& blockGeometry,
+                                 int material, const UnitConverter<T>& converter);
+  bool operator() (T output[], const int input[]);
+};*/
+
+
+/// functor returns pointwise -nu/K*u on the lattice, can be used with BlockSum3D as objective
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysDarcyForce3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+private:
+  BlockGeometry3D<T>& _blockGeometry;
+  int _material;
+public:
+  BlockLatticePhysDarcyForce3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                               BlockGeometry3D<T>& blockGeometry,
+                               int material, const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]);
+};
+
+
+/// functor returns pointwise the l2-norm, e.g. of a velocity
+template <typename T, typename DESCRIPTOR>
+class BlockEuklidNorm3D final : public BlockF3D<T> {
+protected:
+  BlockF3D<T>& _f;
+public:
+  BlockEuklidNorm3D(BlockF3D<T>& f);
+  bool operator() (T output[], const int input[]) override;
+};
+
+
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeInterpPhysVelocity3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+protected:
+  Cuboid3D<T>* _cuboid;
+  int _overlap;
+public:
+  BlockLatticeInterpPhysVelocity3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                   const UnitConverter<T,DESCRIPTOR>& conv, Cuboid3D<T>* c, int overlap);
+  BlockLatticeInterpPhysVelocity3D(const BlockLatticeInterpPhysVelocity3D<T,DESCRIPTOR>& rhs);
+  bool operator() (T output[3], const int input[3]) override
+  {
+    return false;
+  }
+  void operator() (T output[3], const T input[3]);
+};
+
+/** Functor that returns forces acting on a particle surface, returns data in output for every particle in a row(described are return values for the first particle).
+ * \return output[0]-output[2] translational force - physical units
+ * \return output[3]-output[5] torque - physical units
+ * \return output[7] number of voxels
+ */
+
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePorousMomentumLossForce3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+private:
+  BlockGeometryStructure3D<T>& _blockGeometry;
+  std::vector<SmoothIndicatorF3D<T,T,true>* >& _vectorOfIndicator;  
+public:
+  BlockLatticePorousMomentumLossForce3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                      BlockGeometryStructure3D<T>& blockGeometry,
+                                      std::vector<SmoothIndicatorF3D<T,T,true>* >& indicator,
+                                      const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+};
+
+template <typename T, typename DESCRIPTOR, typename TDESCRIPTOR>
+class BlockLatticePhysTemperature3D final : public BlockLatticeThermalPhysF3D<T,DESCRIPTOR,TDESCRIPTOR> {
+public:
+  BlockLatticePhysTemperature3D(BlockLatticeStructure3D<T,TDESCRIPTOR>& blockLattice,
+                                ThermalUnitConverter<T,DESCRIPTOR,TDESCRIPTOR> const& converter);
+  bool operator() (T output[], const int input[]);
+};
+
+/// BlockLatticePhysHeatFlux3D returns pointwise phys heat flux on local lattice.
+template <typename T, typename DESCRIPTOR, typename TDESCRIPTOR>
+class BlockLatticePhysHeatFlux3D final : public BlockLatticeThermalPhysF3D<T,DESCRIPTOR,TDESCRIPTOR> {
+public:
+  BlockLatticePhysHeatFlux3D(BlockLatticeStructure3D<T,TDESCRIPTOR>& blockLattice,
+                             const ThermalUnitConverter<T,DESCRIPTOR,TDESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+private:
+  T _temp; // contains latticeSpecificHeatCapacity * (tau - 0.5) / tau
+};
+
+/// functor returns pointwise minimum distance to boundary given by indicators
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysBoundaryDistance3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+private:
+  BlockGeometryStructure3D<T>& _blockGeometry;
+  std::shared_ptr<IndicatorF3D<T>> _tmpIndicator = nullptr;
+  std::vector<std::shared_ptr<IndicatorF3D<T>>> _indicatorList;
+public:
+  BlockLatticePhysBoundaryDistance3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                     BlockGeometryStructure3D<T>& blockGeometry,
+                                     XMLreader const& xmlReader);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor returns pointwise pore radius for packings of spheres given by indicators
+/// returns NAN for non-pore voxels
+template <typename T, typename DESCRIPTOR>
+class BlockLatticePhysPoreSizeDistribution3D final  : public BlockLatticeF3D<T,DESCRIPTOR> {
+private:
+  BlockGeometryStructure3D<T>& _blockGeometry;
+  int _material;
+  std::shared_ptr<IndicatorF3D<T>> _tmpIndicator = nullptr;
+  std::vector<std::shared_ptr<IndicatorF3D<T>>> _indicatorList;
+  BlockLatticePhysBoundaryDistance3D<T,DESCRIPTOR> _distanceFunctor;
+  BlockData3D<T,T> _distanceCache;
+public:
+  BlockLatticePhysPoreSizeDistribution3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                         BlockGeometryStructure3D<T>& blockGeometry, int material,
+                                         XMLreader const& xmlReader);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor returns pointwise pore radius for packings of spheres given by indicators
+/// returns NAN for non-pore voxels
+template <typename T, typename DESCRIPTOR, typename TDESCRIPTOR>
+class BlockLatticePhysTauFromBoundaryDistance3D final  : public BlockLatticeThermalPhysF3D<T,DESCRIPTOR,TDESCRIPTOR> {
+private:
+  BlockGeometryStructure3D<T>& _blockGeometry;
+  BlockLatticePhysBoundaryDistance3D<T,DESCRIPTOR> _distanceFunctor;
+  const T _tmp1, _tmp2;
+public:
+  BlockLatticePhysTauFromBoundaryDistance3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                         BlockGeometryStructure3D<T>& blockGeometry,
+                                         XMLreader const& xmlReader,
+                                         ThermalUnitConverter<T,DESCRIPTOR,TDESCRIPTOR> const& converter,
+                                         const T p, const T T_avg, const T c_p, const T beta, const T lambda_0, const T sigma, const T p_0, const T n_0);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor that returns 1 if SmoothIndicatorF A intersects IndicatorF B; otherwise, 0
+template <typename T, typename DESCRIPTOR, bool HLBM>
+class BlockLatticeIndicatorSmoothIndicatorIntersection3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+private:
+  BlockGeometryStructure3D<T>& _blockGeometry;
+  IndicatorF3D<T>& _normalInd;
+  SmoothIndicatorF3D<T,T,HLBM>& _smoothInd;
+public:
+  BlockLatticeIndicatorSmoothIndicatorIntersection3D( 
+                      BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                      BlockGeometryStructure3D<T>& blockGeometry,
+                      IndicatorF3D<T>& normalInd, 
+                      SmoothIndicatorF3D<T,T,HLBM>& smoothInd );
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// Returns pointwise porosity on local lattices for Guo & Zhao (2002)'s model.
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeGuoZhaoEpsilon3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticeGuoZhaoEpsilon3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// Returns pointwise porous conductivity on local lattices for Guo & Zhao (2002)'s model.
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeGuoZhaoPhysK3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticeGuoZhaoPhysK3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                             const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// Returns pointwise body force on local lattices for Guo & Zhao (2002)'s model.
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeGuoZhaoPhysBodyForce3D final : public BlockLatticePhysF3D<T,DESCRIPTOR> {
+public:
+  BlockLatticeGuoZhaoPhysBodyForce3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                                     const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+};
+
+/// functor to scale particle distributions to a time step
+template <typename T, typename DESCRIPTOR>
+class BlockLatticeTimeStepScale3D final : public BlockLatticeF3D<T,DESCRIPTOR> {
+private:
+  T _tau_old;
+  const UnitConverter<T,DESCRIPTOR>& _converter;
+public:
+  BlockLatticeTimeStepScale3D(BlockLatticeStructure3D<T,DESCRIPTOR>& blockLattice,
+                              T oldTau, const UnitConverter<T,DESCRIPTOR>& converter);
+  bool operator() (T output[], const int input[]) override;
+};
+
+} // end namespace olb
+
+#endif