Fix BC

src/lbmpy/boundaries/boundaries_in_kernel.py

@@ -67,7 +67,7 @@ def boundary_conditional(boundary, direction, streaming_pattern, prev_timestep,
 
     assignments = []
     for direction_idx in dir_indices:
-        rule = boundary(f_out, f_in, direction_idx, inv_dir, lb_method, index_field=None)
+        rule = boundary(f_out, f_in, direction_idx, inv_dir, lb_method, index_field=None, force_vector=None)
 
         #   rhs: replace f_out by post collision symbols.
         rhs_substitutions = {f_out(i): sym for i, sym in enumerate(lb_method.post_collision_pdf_symbols)}

src/lbmpy/boundaries/boundaryconditions.py

@@ -599,13 +599,13 @@ class WallFunctionBounce(LbBoundary):
         if name is None:
             name = f"WFB : {offset_to_direction_string([-x for x in normal_direction])}"
 
-        super(WallFunctionBounce, self).__init__(name)
+        super(WallFunctionBounce, self).__init__(name, calculate_force_on_boundary=False)
 
     def get_additional_code_nodes(self, lb_method):
         return [MirroredStencilDirections(self.stencil, self.mirror_axis),
                 NeighbourOffsetArrays(lb_method.stencil)]
 
-    def __call__(self, f_out, f_in, dir_symbol, inv_dir, lb_method, index_field):
+    def __call__(self, f_out, f_in, dir_symbol, inv_dir, lb_method, index_field, force_vector):
         # needed symbols for offsets and indices
         # neighbour offset symbols are basically the stencil directions defined in stencils.py:L130ff.
         neighbor_offset = NeighbourOffsetArrays.neighbour_offset(dir_symbol, lb_method.stencil)