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May 22, 2005, 02:06 |
Species concentration at the flow exit
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#1 |
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Hi, I do species conservation modeling in Fluent 6.2.
I write UDFs for each of these species using DEFINE_SOURCE macro which I hook to the sources in Fluid panel. But when it comes to the fluid exit ( I assign a pressure-outlet at this boundary) Fluent asks me for species concentration at this boundary,which I dont know and expect Fluent to do it for me.Given that I know inlet species concentration, how should i overcome this? Should I write a UDF using DEFINE_PROFILE macro that calculates the species concentration (using C_YI(c,t,i)) at this boundary? Will this work? Please help, Kavitha. |
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May 22, 2005, 04:31 |
Re: Species concentration at the flow exit
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#2 |
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I have the same question........
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May 24, 2005, 00:15 |
Re: Species concentration at the flow exit
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#3 |
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I get the same problem. How do I solve this? Can I use outflow? then what is the flow rate weighting gonna be?
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May 24, 2005, 15:21 |
Re: Species concentration at the flow exit
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#4 |
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No knowledge of perticular multispecies flow. However, would "OUTFLOW" boundary condition where you don't need to specify anything help? -US
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May 26, 2005, 07:16 |
Re: Species concentration at the flow exit
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#5 |
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I think fluent asks only for backflow species concentration on a pressure outlet.I have not yet used Fluent 6.2 but have used 6.1.
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May 28, 2005, 08:24 |
Re: Species concentration at the flow exit
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#6 |
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Hai,
please give me some idea to write udf for combustion of solid fuel. bcz i'm struggling with this problem. help me please. |
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