# [GAMBIT] probleme of convergence

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 May 4, 2012, 07:26 probleme of convergence #1 New Member   sami latreche Join Date: Mar 2012 Posts: 5 Rep Power: 5 I treat the phenomenon of natural convection double diffusion for a mixture of air-h2o and air-co2 in a square cavity for a number of Ra = 10 ^ 5 then L (length caractristique) = 0.3 m the problem is: the convergence in Fluent ! the programe rest calculated ... then I think the problem is caused by the mesh I tried several meshes but same result pleas help me ************************************************** ******** Je traite le phénomène de la convection naturelle double diffusion pour un mélange air-h2o et air-co2 dans un cavité carré pour un nombre de Ra = 10^5 donc L (longeur caractristique) = 0.3 m le problème est : la convergence dans Fluent ! le programe reste calcule... alors Je pense que le problème est dû à le maillage J'ai essayé plusieurs maillages mais toujour meme résultat s.v.p aidez moi

 May 5, 2012, 07:20 ??? #2 New Member   sami latreche Join Date: Mar 2012 Posts: 5 Rep Power: 5 where is the answer

 May 7, 2012, 01:39 #3 Super Moderator     Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 2,973 Rep Power: 30 if you tried with several mesh and you still have same convergence issues, then I would say it is not a mesh problem. What gives you an check mesh? I would try a simple convection problem on your mesh to see if your mesh is guilty __________________ In memory of my friend Hervé: CFD engineer & freerider

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