Due to recent bot attacks we have changed the sign-up process. If you want to participate in our forum please send a message via our contact form. › Forums › OpenLB › General Topics › SuperLatticePhysWallShearStress3D() returns norm of wall shear stress tensor › Reply To: SuperLatticePhysWallShearStress3D() returns norm of wall shear stress tensor February 25, 2021 at 2:20 am #5492 guojuwParticipant Thanks Jonathan. I worked it out by outputting the WSS[0] to WSS[2]. Regards, Junwei