Comment for BoundaryForce.cpp test case

tests/lbm/boundary/BoundaryForce.cpp

@@ -15,6 +15,8 @@
 //
 //! \file BoundaryForce.cpp
 //! \author Michael Kuron <mkuron@icp.uni-stuttgart.de>
+//! \brief Calculates the drag force on a spherical no-slip boundary in a flow
+//!        due to a velocity boundary condition and compares with Stokes' law.
 //
 //======================================================================================================================
 
@@ -139,7 +141,7 @@ int main( int argc, char ** argv )
                                                      L / yBlocks,
                                                      L / zBlocks,
                                                      real_c(1),
-                                                     true, true, true,
+                                                     false, false, true,
                                                      true);
    
    const real_t omega = real_c(0.06);