{"id":163105,"date":"2021-10-14T22:50:23","date_gmt":"2021-10-14T22:50:23","guid":{"rendered":"\/forum\/forums\/topic\/flame-front-dont-predicted-accurately\/"},"modified":"2021-12-22T21:51:59","modified_gmt":"2021-12-22T21:51:59","slug":"flame-front-dont-predicted-accurately","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/flame-front-dont-predicted-accurately\/","title":{"rendered":"Flame front don’t predicted accurately"},"content":{"rendered":"
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hello, I conducted a numerical simulation of propane-air using fluent, in the first case I use a chemical reaction mechanism contains 24 species and 66 reactions with species transport combustion model and Eddy dissipation concept for the net reaction rate with 79541 nodes (mesh size). the results obtained is predicted very well and the flame front is same with the experimental (figure1), but in the second case when I keep the same configuration as in case 1 and I only changed the mesh size to 151690, the flame temperature raised and its front changed (figure 2), and also its size being bigger than in the case 1,<\/p>\n

I don't why this happen even I verified the B.C and the physics…<\/p>\n

Can anyone help please <\/p>\n

best, <\/p>\n

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