Combustion in a closed System
Hello Matej, I am new to Fluent and have been doing some modeling recently. I am studying the combustion of air and hydrogen in a closed chamber. My 2-D mesh looks like a donut with an inner radius of .3mm and outer of 50mm and this has been cut in half for symmetry purposes. I am having trouble modeling in a closed chamber and hope you can help me out. I would like to start the combustion of the gas at the small inner diameter "hot-wire". This surface should be somewhere from 875 to 1300 deg C. I have done the following procedure to accomplish this and then at the end I am unable to define the temperature of the hot-wire and chamber wall.
File->Read Case->2d chamber 05.msh Grid->Check Grid->Scale->mm->Scale->Close Define->Models->Solver->Time->Unsteady->Ok Define->Models->Radiation->P1->Ok->Ok to the warning Define->Models->Viscous->K-epsilon(2eqn)->OK Define->Models->Species->Premixed Combustion->Apply->Ok to the warning->Ok Define->Materials->Fluent Database->Then I picked out air and hydrogen->changed absorbtion coefficient to 10 for both of them and each time clicked on Change/Create->Close Define->operating conditions->Checked Gravity->Y=-9.8->ok Define->Boundary Conditions->Hot Wire->###Can't define temperatures here###
Any ideas suggestions are appreciated.
Thanks, Dr. Martin Castillo
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