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April 13, 2008, 17:48 |
Ethane&air combustion
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#1 |
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I have a pipe. I put 02 and H20 vapor from the left and C2H6 from the top (nearly a the O2 inlet). The pipe is open on the right (at the end)
Pipe is long 1450mm, 50mm diameter I would model this combustion between ethane and 02.I know "the mass flow in" of O2 and H2O at about 1100°K. I know "the mass flow in" of ethane too. At the end of the pipe I know the pressure. These are my BCs. I followed step by step a tutorial about methane-air combustion. I supposed my problem is very similar. I use costant cp & density, energy equation and 0.6 relaxion factor for each chemical compound. The viscosity and mass transfer are the same of the tutorial. Initial condition: C2H6 less than O2, pressure 0, T= 1100°K. Anway my problem not converge and I do not see my pressure rises up (it is about 1 atm uniform, like the pressure_outlet). Durign the iteration like "temperature is set maximum 5e3" is written. What means? Can I solve my problem? My principal target is defining the temperature How you can understand I'm a newbie about fluent. |
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