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Edit material properties for droplets in Fluent 15.0

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Old   January 16, 2018, 09:49
Question Edit material properties for droplets in Fluent 15.0
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Hi, I am using the Fluent 15.0 to simulate a spray process, where I need the properties of droplets such as density, Cp and viscosity change with temperature and pressure. I found when the properties are set to constant or piecewise-linear (only change with temperature), it runs well and I can obtain a good spray. However, when I set the properties to piecewise-polynomial (only change with temperature) or use UDF (change with both temperature and pressure), nothing would be injected. Both a 2D model and a 3D model and different materials have been tried, and the results are the same. Is this a bug of Fluent 15.0? Or I made something wrong in the configuration? Does anyone meet the same problem? Thank you!
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