Hi, Nek's Could I compute the perturbative equations, and so the adjoint one, for a variable viscosity flow? If yes, do I need to do like in the DNS simulation? Thanks. -- Mr. Mirko FaranoPh.D. student at Politecnico di BariTel.: +39-0883529289 / +39-0805963462Mob.: +39-3202342719Department of Mechanics Mathematics and Management - Fluid Machinery and Energy SystemsVia Re David, 200 - 70125 BARI (Italy)[email protected] joint supervision with theEcole Nationale Supérieure d'Arts et Métiers de Paris - ParistechTel.: +33-144246436Mob.: +33-789822134Dynfluid Laboratory151 Boulevard de l'Hôpital - 75013 Paris (France)[email protected]