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 › PrTurb in SmagorinskyBoussinesqCouplingGenerator3D › Reply To: PrTurb in SmagorinskyBoussinesqCouplingGenerator3D July 5, 2021 at 5:20 am #5780 POSThuParticipant I think it should be the turbulent Prandtl number, and I will try again. Thank you.