Hi all, I'm having some confusion in applying appropriate boundary conditions to proper named surfaces in my mesh. I'm using v4.2.0 with the original mesh being constructed in gmsh. I subsequently use the MeshConvert utility to generate the partial xml file for the simulation. In my .msh file I have my surfaces set as $PhysicalNames 5 2 1 "Unspecified" 1 2 "Airfoil" 1 3 "Inlet" 1 4 "Outlet" 1 5 "Tandb" $EndPhysicalNames I want to apply no-slip condition to the airfoil, a velocity inlet , a constant pressure outlet and no slip wall to TandB as well. My relevant section of the xml case file is given below. I'd like to know if I'm implementing the boundary conditions correctly. <BOUNDARYREGIONS> <B ID="0"> C[2] </B> <B ID="1"> C[3] </B> <B ID="2"> C[4] </B> <B ID="3"> C[5] </B> </BOUNDARYREGIONS> <BOUNDARYCONDITIONS> <REGION REF="0"> <D VAR="u" VALUE="0" /> <D VAR="v" VALUE="0" /> <N VAR="p" USERDEFINEDTYPE="H" VALUE="0" /> </REGION> <REGION REF="1"> <D VAR="u" VALUE ="1" /> <D VAR="v" VALUE="0" /> <N VAR="p" USERDEFINEDTYPE="H" VALUE="0" /> </REGION> <REGION REF="2"> <N VAR="u" VALUE="0" /> <N VAR="v" VALUE="0" /> <D VAR="p" VALUE="0" /> </REGION> <REGION REF="3"> <D VAR="u" VALUE="0" /> <D VAR="v" VALUE="0" /> <N VAR="p" USERDEFINEDTYPE="H" VALUE="0" /> </REGION> </BOUNDARYCONDITIONS> <FUNCTION NAME="InitialConditions"> <E VAR= "u" VALUE="1" /> <E VAR="v" VALUE="0" /> <E VAR="p" VALUE="0" /> </FUNCTION> -- *Amitvikram Dutta* *MASc Candidate* *Graduate Research Assistant * *Okanagan CFD Laboratory* *University of British Columbia | Okanagan Campus*