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October 15, 2012, 06:08 |
Solving the transient condition
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#1 |
New Member
ehsan
Join Date: Apr 2012
Location: UK
Posts: 14
Rep Power: 14 |
Hi everybody;
I`m working on gas flow between engine cylinder and piston. I have assumed Combustion chamber pressure as a pressure inlet. Now,question is,how can I Definition the inlet as a transient? |
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October 15, 2012, 12:20 |
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#2 |
Senior Member
Join Date: Mar 2011
Location: Germany
Posts: 552
Rep Power: 20 |
I am not an expert in this but I guess you have to use a UDF for the transient inlet conditions
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October 15, 2012, 16:03 |
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#3 |
Member
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hi mate,
if you want your inlet to change with time, you need to write a udf, which is DEFINE_PROFILE macro. |
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October 17, 2012, 12:24 |
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#4 |
Member
NormalVector
Join Date: Oct 2010
Posts: 71
Rep Power: 15 |
You can also define a profile for a transient BC. A profile is essentially a BC Value vs. Time set of data. Fluent linearly interpolates values for flow times that occur in between Time data points you supply.
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