Integration for Interpolation BCs

python/lbmpy_walberla/additional_data_handler.py

@@ -9,21 +9,38 @@ try:
 except ImportError:
     from lbmpy.custom_code_nodes import MirroredStencilDirections
 from lbmpy.boundaries.boundaryconditions import LbBoundary
-from lbmpy.boundaries import ExtrapolationOutflow, FreeSlip, UBB, DiffusionDirichlet
+from lbmpy.boundaries import (ExtrapolationOutflow, FreeSlip, UBB, DiffusionDirichlet,
+                              NoSlipLinearBouzidi, QuadraticBounceBack)
 
 from pystencils_walberla.additional_data_handler import AdditionalDataHandler
 
 
-def default_additional_data_handler(boundary_obj: LbBoundary, lb_method, field_name, target=Target.CPU):
+interpolation_bc_check_template = """
+if(!isFlagSet(it.neighbor({cx}, {cy}, {cz}, 0), domainFlag)){{ 
+   //Linear-Bouzidi requires 2 fluid nodes: if the 2nd node is not available abort, 
+   //apply Bounce Back at that point. This clearly lowers the accuracy and makes inconsistent the
+   //calculation of the total force
+   element.q = -1.0;
+   WALBERLA_LOG_INFO_ON_ROOT("Warning: Bouzidi cannot be applied at least on one boundary link.")
+}} //end if to check Bouzidi applicability  
+"""
+
+
+def default_additional_data_handler(boundary_obj: LbBoundary, lb_method, field_name, target=Target.CPU,
+                                    pdfs_data_type=None, zeroth_timestep=None):
     if not boundary_obj.additional_data:
         return None
-
     if isinstance(boundary_obj, FreeSlip):
         return FreeSlipAdditionalDataHandler(lb_method.stencil, boundary_obj)
     elif isinstance(boundary_obj, UBB):
         return UBBAdditionalDataHandler(lb_method.stencil, boundary_obj)
     elif isinstance(boundary_obj, ExtrapolationOutflow):
-        return OutflowAdditionalDataHandler(lb_method.stencil, boundary_obj, target=target, field_name=field_name)
+        return OutflowAdditionalDataHandler(lb_method.stencil, boundary_obj, target=target, field_name=field_name,
+                                            pdfs_data_type=pdfs_data_type, zeroth_timestep=zeroth_timestep)
+    elif isinstance(boundary_obj, NoSlipLinearBouzidi):
+        return NoSlipLinearBouzidiAdditionalDataHandler(lb_method.stencil, boundary_obj)
+    elif isinstance(boundary_obj, QuadraticBounceBack):
+        return QuadraticBounceBackAdditionalDataHandler(lb_method.stencil, boundary_obj)
     else:
         raise ValueError(f"No default AdditionalDataHandler available for boundary of type {boundary_obj.__class__}")
 
@@ -107,7 +124,7 @@ class UBBAdditionalDataHandler(AdditionalDataHandler):
 
     @property
     def initialiser_list(self):
-        return "elementInitaliser(velocityCallback),"
+        return "elementInitialiser(velocityCallback),"
 
     @property
     def additional_arguments_for_fill_function(self):
@@ -117,23 +134,117 @@ class UBBAdditionalDataHandler(AdditionalDataHandler):
     def additional_parameters_for_fill_function(self):
         return " const shared_ptr<StructuredBlockForest> &blocks, "
 
-    def data_initialisation(self, direction):
-        init_list = ["Vector3<real_t> InitialisatonAdditionalData = elementInitaliser(Cell(it.x(), it.y(), it.z()), "
-                     "blocks, *block);", "element.vel_0 = InitialisatonAdditionalData[0];",
-                     "element.vel_1 = InitialisatonAdditionalData[1];"]
+    def data_initialisation(self, *_):
+        init_list = ["Vector3<real_t> InitialisationAdditionalData = elementInitialiser(Cell(it.x(), it.y(), it.z()), "
+                     "blocks, *block);", "element.vel_0 = InitialisationAdditionalData[0];",
+                     "element.vel_1 = InitialisationAdditionalData[1];"]
         if self._dim == 3:
-            init_list.append("element.vel_2 = InitialisatonAdditionalData[2];")
+            init_list.append("element.vel_2 = InitialisationAdditionalData[2];")
 
         return "\n".join(init_list)
 
     @property
     def additional_member_variable(self):
         return "std::function<Vector3<real_t>(const Cell &, const shared_ptr<StructuredBlockForest>&, IBlock&)> " \
-               "elementInitaliser; "
+               "elementInitialiser; "
+
+
+class NoSlipLinearBouzidiAdditionalDataHandler(AdditionalDataHandler):
+    def __init__(self, stencil, boundary_object):
+        assert isinstance(boundary_object, NoSlipLinearBouzidi)
+
+        self._dtype = BasicType(boundary_object.data_type).c_name
+        self._blocks = "const shared_ptr<StructuredBlockForest>&, IBlock&)>"
+        super(NoSlipLinearBouzidiAdditionalDataHandler, self).__init__(stencil=stencil)
+
+    @property
+    def constructor_argument_name(self):
+        return "wallDistanceBouzidi"
+
+    @property
+    def constructor_arguments(self):
+        return f", std::function<{self._dtype}(const Cell &, const Cell &, {self._blocks}&" \
+               f"{self.constructor_argument_name} "
+
+    @property
+    def initialiser_list(self):
+        return f"elementInitialiser({self.constructor_argument_name}),"
+
+    @property
+    def additional_arguments_for_fill_function(self):
+        return "blocks, "
+
+    @property
+    def additional_parameters_for_fill_function(self):
+        return " const shared_ptr<StructuredBlockForest> &blocks, "
+
+    def data_initialisation(self, direction):
+        cx = self._walberla_stencil[direction][0]
+        cy = self._walberla_stencil[direction][1]
+        cz = self._walberla_stencil[direction][2]
+        fluid_cell = "Cell(it.x(), it.y(), it.z())"
+        boundary_cell = f"Cell(it.x() + {cx}, it.y() + {cy}, it.z() + {cz})"
+        check_str = interpolation_bc_check_template.format(cx=-cx, cy=-cy, cz=-cz)
+        init_element = f"elementInitialiser({fluid_cell}, {boundary_cell}, blocks, *block)"
+        init_list = [f"const {self._dtype} q = (({self._dtype}) {init_element});",
+                     "element.q = q;",
+                     check_str]
+
+        return "\n".join(init_list)
+
+    @property
+    def additional_member_variable(self):
+        return f"std::function<{self._dtype}(const Cell &, const Cell &, {self._blocks} elementInitialiser; "
+
+
+class QuadraticBounceBackAdditionalDataHandler(AdditionalDataHandler):
+    def __init__(self, stencil, boundary_object):
+        assert isinstance(boundary_object, QuadraticBounceBack)
+
+        self._dtype = BasicType(boundary_object.data_type).c_name
+        self._blocks = "const shared_ptr<StructuredBlockForest>&, IBlock&)>"
+        super(QuadraticBounceBackAdditionalDataHandler, self).__init__(stencil=stencil)
+
+    @property
+    def constructor_argument_name(self):
+        return "wallDistanceQuadraticBB"
+
+    @property
+    def constructor_arguments(self):
+        return f", std::function<{self._dtype}(const Cell &, const Cell &, {self._blocks}&" \
+               f"{self.constructor_argument_name} "
+
+    @property
+    def initialiser_list(self):
+        return f"elementInitialiser({self.constructor_argument_name}),"
+
+    @property
+    def additional_arguments_for_fill_function(self):
+        return "blocks, "
+
+    @property
+    def additional_parameters_for_fill_function(self):
+        return " const shared_ptr<StructuredBlockForest> &blocks, "
+
+    def data_initialisation(self, direction):
+        cx = self._walberla_stencil[direction][0]
+        cy = self._walberla_stencil[direction][1]
+        cz = self._walberla_stencil[direction][2]
+        fluid_cell = "Cell(it.x(), it.y(), it.z())"
+        boundary_cell = f"Cell(it.x() + {cx}, it.y() + {cy}, it.z() + {cz})"
+        init_element = f"elementInitialiser({fluid_cell}, {boundary_cell}, blocks, *block)"
+        init_list = [f"const {self._dtype} q = (({self._dtype}) {init_element});", "element.q = q;"]
+
+        return "\n".join(init_list)
+
+    @property
+    def additional_member_variable(self):
+        return f"std::function<{self._dtype}(const Cell &, const Cell &, {self._blocks} elementInitialiser; "
 
 
 class OutflowAdditionalDataHandler(AdditionalDataHandler):
-    def __init__(self, stencil, boundary_object, target=Target.CPU, field_name='pdfs', pdfs_data_type=None, zeroth_timestep=None):
+    def __init__(self, stencil, boundary_object, target=Target.CPU, field_name='pdfs',
+                 pdfs_data_type=None, zeroth_timestep=None):
         assert isinstance(boundary_object, ExtrapolationOutflow)
         self._stencil = boundary_object.stencil
         self._lb_method = boundary_object.lb_method

python/lbmpy_walberla/boundary_collection.py

@@ -113,7 +113,8 @@ def __generate_alternating_lbm_boundary(generation_context,
                                         **create_kernel_params):
     if boundary_object.additional_data and additional_data_handler is None:
         target = create_kernel_params.get('target', Target.CPU)
-        additional_data_handler = default_additional_data_handler(boundary_object, lb_method, field_name, target=target)
+        additional_data_handler = default_additional_data_handler(boundary_object, lb_method, field_name,
+                                                                  target=target, pdfs_data_type=field_data_type)
 
     timestep_param_name = 'timestep'
     timestep_param_dtype = np.uint8

tests/lbm_generated/CMakeLists.txt

@@ -6,8 +6,11 @@
 waLBerla_link_files_to_builddir( "*.prm" )
 waLBerla_link_files_to_builddir( "*.py" )
 
+if( WALBERLA_BUILD_WITH_CODEGEN )
+
 waLBerla_generate_target_from_python(NAME ExampleGenerated
         FILE Example.py
+        CODEGEN_CFG example_codegen
         OUT_FILES LBMStorageSpecification.h LBMStorageSpecification.cpp
         LBMSweepCollection.h LBMSweepCollection.cpp
         NoSlip.h NoSlip.cpp
@@ -16,6 +19,24 @@ waLBerla_generate_target_from_python(NAME ExampleGenerated
         Example_InfoHeader.h)
 waLBerla_compile_test( FILES Example.cpp DEPENDS ExampleGenerated blockforest field lbm_generated timeloop )
 
+waLBerla_generate_target_from_python(NAME InterpolationNoSlipGenerated
+        FILE InterpolationNoSlip.py
+        CODEGEN_CFG interpolation_no_slip_codegen
+        OUT_FILES InterpolationNoSlipStorageSpecification.h InterpolationNoSlipStorageSpecification.cpp
+        InterpolationNoSlipSweepCollection.h InterpolationNoSlipSweepCollection.cpp
+        NoSlip.h NoSlip.cpp
+        NoSlipBouzidi.h NoSlipBouzidi.cpp
+        NoSlipQuadraticBB.h NoSlipQuadraticBB.cpp
+        UBB.h UBB.cpp
+        InterpolationNoSlipBoundaryCollection.h
+        InterpolationNoSlipHeader.h)
+
+waLBerla_compile_test( FILES InterpolationNoSlip.cpp DEPENDS InterpolationNoSlipGenerated blockforest core field geometry lbm_generated timeloop )
+# waLBerla_execute_test( NAME InterpolationNoSlip1 COMMAND $<TARGET_FILE:InterpolationNoSlip> ${CMAKE_CURRENT_SOURCE_DIR}/InterpolationNoSlip.prm -Parameters.distanceWall=0.1 )
+# waLBerla_execute_test( NAME InterpolationNoSlip2 COMMAND $<TARGET_FILE:InterpolationNoSlip> ${CMAKE_CURRENT_SOURCE_DIR}/InterpolationNoSlip.prm -Parameters.distanceWall=0.5 )
+waLBerla_execute_test( NAME InterpolationNoSlip3 COMMAND $<TARGET_FILE:InterpolationNoSlip> ${CMAKE_CURRENT_SOURCE_DIR}/InterpolationNoSlip.prm )
+endif()
+
 waLBerla_generate_target_from_python(NAME FreeSlipRefinementGenerated
         FILE FreeSlipRefinement.py
         CODEGEN_CFG free_slip_refinement_codegen

tests/lbm_generated/InterpolationNoSlip.cpp

+//======================================================================================================================
+//
+//  This file is part of waLBerla. waLBerla 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 3 of
+//  the License, or (at your option) any later version.
+//
+//  waLBerla 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 waLBerla (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file InterpolatedNoSlip.cpp
+//! \author Markus Holzer <markus.holzer@fau.de>
+//! \brief Couette flow driven by a UBB BC in Nord and wall boundary in the South. Remaining directions are periodic
+//!        If Interpolation BC are used the distance of the southern wall can be controlled. The velocity in the
+//!        first fluid cell is checked and compared with the velocity obtained from a default NoSlip BC.
+//!        Depending on the set distance for the interpolation BCs the velocity is expected to be higher or lower
+//
+//======================================================================================================================
+#include "blockforest/Initialization.h"
+#include "blockforest/communication/UniformBufferedScheme.h"
+
+#include "core/DataTypes.h"
+#include "core/Environment.h"
+#include "core/debug/TestSubsystem.h"
+#include "core/logging/Initialization.h"
+#include "core/math/Vector3.h"
+#include "core/timing/RemainingTimeLogger.h"
+
+#include "field/AddToStorage.h"
+#include "field/FlagField.h"
+#include "field/GhostLayerField.h"
+#include "field/vtk/VTKWriter.h"
+
+#include "geometry/InitBoundaryHandling.h"
+
+#include "timeloop/SweepTimeloop.h"
+
+#include "lbm_generated/communication/UniformGeneratedPdfPackInfo.h"
+#include "lbm_generated/field/AddToStorage.h"
+#include "lbm_generated/field/PdfField.h"
+
+// include the generated header file. It includes all generated classes
+#include "InterpolationNoSlipHeader.h"
+
+using namespace walberla;
+using namespace std::placeholders;
+
+using StorageSpecification_T = lbm::InterpolationNoSlipStorageSpecification;
+using Stencil_T              = StorageSpecification_T::Stencil;
+using CommunicationStencil_T = StorageSpecification_T::CommunicationStencil;
+using PdfField_T             = lbm_generated::PdfField< StorageSpecification_T >;
+using PackInfo_T             = lbm_generated::UniformGeneratedPdfPackInfo< PdfField_T >;
+
+using SweepCollection_T = lbm::InterpolationNoSlipSweepCollection;
+
+using VectorField_T = GhostLayerField< real_t, StorageSpecification_T::Stencil::D >;
+using ScalarField_T = GhostLayerField< real_t, 1 >;
+
+using flag_t               = walberla::uint8_t;
+using FlagField_T          = FlagField< flag_t >;
+using BoundaryCollection_T = lbm::InterpolationNoSlipBoundaryCollection< FlagField_T >;
+
+using blockforest::communication::UniformBufferedScheme;
+
+class wallDistance
+{
+ public:
+   wallDistance(const real_t q) : q_(q) {}
+
+   real_t operator()(const Cell& fluidCell, const Cell& boundaryCell, const shared_ptr< StructuredBlockForest >& SbF,
+                     IBlock& block) const;
+
+ private:
+   const real_t q_;
+}; // class wallDistance
+
+real_t wallDistance::operator()(const Cell& /*fluidCell*/, const Cell& /*boundaryCell*/,
+                                const shared_ptr< StructuredBlockForest >& /*SbF*/, IBlock& /*block*/) const
+{
+   return q_;
+}
+
+int main(int argc, char** argv)
+{
+   debug::enterTestMode();
+   walberla::Environment walberlaEnv(argc, argv);
+   logging::configureLogging(walberlaEnv.config());
+
+   auto blocks = blockforest::createUniformBlockGridFromConfig(walberlaEnv.config());
+
+   auto domainSetup                = walberlaEnv.config()->getOneBlock("DomainSetup");
+   Vector3< uint_t > cellsPerBlock = domainSetup.getParameter< Vector3< uint_t > >("cellsPerBlock");
+
+   // read parameters
+   auto parameters   = walberlaEnv.config()->getOneBlock("Parameters");
+   const real_t omega        = parameters.getParameter< real_t >("omega", real_c(1.4));
+   const real_t distanceWall = parameters.getParameter< real_t >("distanceWall", real_c(0.5));
+   const uint_t timesteps    = parameters.getParameter< uint_t >("timesteps", uint_c(10)) + uint_c(1);
+
+   WALBERLA_LOG_DEVEL_VAR(distanceWall)
+
+   auto remainingTimeLoggerFrequency =
+      parameters.getParameter< real_t >("remainingTimeLoggerFrequency", real_c(3.0)); // in seconds
+
+   const StorageSpecification_T StorageSpec = StorageSpecification_T();
+   BlockDataID pdfFieldId = lbm_generated::addPdfFieldToStorage(blocks, "pdf field", StorageSpec, uint_c(1));
+   BlockDataID velFieldId = field::addToStorage< VectorField_T >(blocks, "Velocity", real_c(0.0), field::fzyx);
+
+   BlockDataID flagFieldId = field::addFlagFieldToStorage< FlagField_T >(blocks, "flag field", uint_c(1));
+
+   SweepCollection_T sweepCollection(blocks, pdfFieldId, velFieldId, omega);
+   for (auto& block : *blocks)
+   {
+      sweepCollection.initialise(&block);
+   }
+
+   const FlagUID fluidFlagUID("Fluid");
+   auto boundariesConfig = walberlaEnv.config()->getBlock("Boundaries");
+   geometry::initBoundaryHandling< FlagField_T >(*blocks, flagFieldId, boundariesConfig);
+   geometry::setNonBoundaryCellsToDomain< FlagField_T >(*blocks, flagFieldId, fluidFlagUID);
+
+   const wallDistance wallDistanceCallback{ distanceWall };
+   std::function< real_t(const Cell&, const Cell&, const shared_ptr< StructuredBlockForest >&, IBlock&) >
+      wallDistanceFunctor = wallDistanceCallback;
+   // For the BoundaryCollection a funcotr to calculate the wall distance for the Bouzidi NoSlip and for the QuadraticBB
+   // have to be provided. In this test case we use the same function to calculate the wall distance
+   BoundaryCollection_T boundaryCollection(blocks, flagFieldId, pdfFieldId, fluidFlagUID, omega, wallDistanceFunctor,
+                                           wallDistanceFunctor);
+
+   auto packInfo = std::make_shared< lbm_generated::UniformGeneratedPdfPackInfo< PdfField_T > >(pdfFieldId);
+   UniformBufferedScheme< Stencil_T > communication(blocks);
+   communication.addPackInfo(packInfo);
+
+   SweepTimeloop timeloop(blocks->getBlockStorage(), timesteps);
+   timeloop.add() << BeforeFunction(communication, "communication")
+                  << Sweep(boundaryCollection.getSweep(BoundaryCollection_T::ALL), "Boundary Conditions");
+   timeloop.add() << Sweep(sweepCollection.streamCollide(SweepCollection_T::ALL), "LBM StreamCollide");
+
+   uint_t vtkWriteFrequency = parameters.getParameter< uint_t >("vtkWriteFrequency", 0);
+   if (vtkWriteFrequency > 0)
+   {
+      auto vtkOutput = vtk::createVTKOutput_BlockData(*blocks, "InterpolationNoSlipVTK", vtkWriteFrequency, 0, false,
+                                                      "vtk_out", "simulation_step", false, true, true, false, 0);
+
+      auto velWriter = make_shared< field::VTKWriter< VectorField_T > >(velFieldId, "velocity");
+      vtkOutput->addBeforeFunction([&]() {
+         for (auto& block : *blocks)
+         {
+            sweepCollection.calculateMacroscopicParameters(&block);
+         }
+      });
+
+      vtkOutput->addCellDataWriter(velWriter);
+      timeloop.addFuncBeforeTimeStep(vtk::writeFiles(vtkOutput), "VTK Output");
+   }
+
+   if (remainingTimeLoggerFrequency > 0)
+   {
+      // log remaining time
+      timeloop.addFuncAfterTimeStep(
+         timing::RemainingTimeLogger(timeloop.getNrOfTimeSteps(), remainingTimeLoggerFrequency),
+         "remaining time logger");
+   }
+
+   timeloop.run();
+
+   // This is the velocity at the wall, when a NoSlip BC is used. This is similar to using an interpolation BC with a
+   // wall distance of 0.5. This value can be obtained by either setting distanceWall to 0.5 in the Parameter file or
+   // specifying the NoSlip BC at the southern boundary
+   const real_t defaultNoSlipVelocity = real_c(0.0002);
+
+   for (auto& block : *blocks)
+   {
+      sweepCollection.calculateMacroscopicParameters(&block);
+
+      auto velField  = block.getData< VectorField_T >(velFieldId);
+      auto velAtWall = velField->get(cell_idx_c(cellsPerBlock[0] / 2), 0, cell_idx_c(cellsPerBlock[2] / 2), 0);
+      // WALBERLA_LOG_DEVEL_VAR(velAtWall)
+
+      if (distanceWall > 0.49 && distanceWall < 0.51) { WALBERLA_CHECK_FLOAT_EQUAL(velAtWall, defaultNoSlipVelocity) }
+      else if (distanceWall < 0.49) { WALBERLA_CHECK_GREATER(defaultNoSlipVelocity, velAtWall) }
+      else if (distanceWall > 0.51) { WALBERLA_CHECK_LESS(defaultNoSlipVelocity, velAtWall) }
+   }
+
+   return EXIT_SUCCESS;
+}

tests/lbm_generated/InterpolationNoSlip.prm

+Parameters
+{
+	omega           1.1;
+	timesteps       5000;
+    distanceWall    0.9;
+
+	remainingTimeLoggerFrequency 0; // in seconds
+	vtkWriteFrequency 0;
+}
+
+DomainSetup
+{
+    blocks        <  1,  1,  1 >;
+    cellsPerBlock < 50, 25, 25 >;
+    periodic      <  1,  0,  1 >;
+}
+
+Boundaries 
+{
+    // Border { direction S;    walldistance -1;  flag NoSlip; }
+    // Border { direction S;    walldistance -1;  flag NoSlipBouzidi; }
+    Border { direction S;    walldistance -1;  flag NoSlipQuadraticBB; }
+    Border { direction N;    walldistance -1;  flag UBB; }
+}
+
+
+Logging
+{
+    logLevel info;  // info progress detail tracing
+}

tests/lbm_generated/InterpolationNoSlip.py

+import sympy as sp
+
+from pystencils import Target
+from pystencils import fields
+
+from lbmpy.advanced_streaming.utility import get_timesteps
+from lbmpy.boundaries import NoSlip, NoSlipLinearBouzidi, QuadraticBounceBack, UBB
+from lbmpy.creationfunctions import create_lb_method, create_lb_collision_rule
+from lbmpy import LBMConfig, LBMOptimisation, Stencil, Method, LBStencil
+from pystencils_walberla import CodeGeneration, generate_info_header
+from lbmpy_walberla import generate_lbm_package, lbm_boundary_generator
+
+import warnings
+
+warnings.filterwarnings("ignore")
+with CodeGeneration() as ctx:
+    target = Target.CPU  # Target.GPU if ctx.cuda else Target.CPU
+    data_type = "float64" if ctx.double_accuracy else "float32"
+
+    streaming_pattern = 'pull'
+    timesteps = get_timesteps(streaming_pattern)
+
+    omega = sp.symbols("omega")
+
+    stencil = LBStencil(Stencil.D3Q27)
+    pdfs, vel_field = fields(f"pdfs({stencil.Q}), velocity({stencil.D}): {data_type}[{stencil.D}D]",
+                             layout='fzyx')
+
+    macroscopic_fields = {'velocity': vel_field}
+
+    lbm_config = LBMConfig(stencil=stencil, method=Method.SRT, relaxation_rate=omega,
+                           streaming_pattern=streaming_pattern)
+    lbm_opt = LBMOptimisation(cse_global=False, field_layout='fzyx')
+
+    method = create_lb_method(lbm_config=lbm_config)
+    collision_rule = create_lb_collision_rule(lbm_config=lbm_config, lbm_optimisation=lbm_opt)
+
+    no_slip = lbm_boundary_generator(class_name='NoSlip', flag_uid='NoSlip',
+                                     boundary_object=NoSlip())
+    no_slip_bouzidi = lbm_boundary_generator(class_name='NoSlipBouzidi', flag_uid='NoSlipBouzidi',
+                                             boundary_object=NoSlipLinearBouzidi(data_type=data_type))
+    no_slip_quadraticbb = lbm_boundary_generator(class_name='NoSlipQuadraticBB', flag_uid='NoSlipQuadraticBB',
+                                                 boundary_object=QuadraticBounceBack(omega, data_type=data_type))
+    ubb = lbm_boundary_generator(class_name='UBB', flag_uid='UBB',
+                                 boundary_object=UBB([0.01, 0, 0], data_type=data_type))
+
+    generate_lbm_package(ctx, name="InterpolationNoSlip",
+                         collision_rule=collision_rule,
+                         lbm_config=lbm_config, lbm_optimisation=lbm_opt,
+                         nonuniform=True, boundaries=[no_slip, no_slip_bouzidi, no_slip_quadraticbb, ubb],
+                         macroscopic_fields=macroscopic_fields, data_type=data_type)
+
+    generate_info_header(ctx, 'InterpolationNoSlipHeader')