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April 14, 2013, 03:11 |
Mass loss in exported inlet profile
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#1 |
New Member
Riza Yukananto
Join Date: Mar 2013
Posts: 4
Rep Power: 13 |
Hi guys,
I'm simulating a combustion in a combustor chamber with fluent. Since the combustor's geometry is big, I divided the simulation into cold flow for the whole geometry, and later on hot flow for only small part of the geometry. I exported the boundary profile from the result of the cold flow simulation (omega, k, v-x,y,z) with CFD-post, at some surface location (made with plane and surface revolution) , and use it as velocity inlet profile for the hot flow simulation at the exact same location. Now, the intended convergence level is not yet satisfied, but there is apparent decrease in the mass flow rate (initially inlet mass flow rate was 0.0375 in, but after it was exported at several cutting location, it decreases into 0.0369). Can anybody tell me why is this happening? Thanks a lot guys. |
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