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Having problem importing surface reaction mechanism from CHEMKIN

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Old   March 10, 2016, 01:25
Default Having problem importing surface reaction mechanism from CHEMKIN
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Quntin Lynn
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Hi, everyone,
I am performing a simulation case on silicon deposition from SiHCl3, involving multiple volumetric and surface reactions. I have tried to import the reaction mechanism from CHEMKIN file (.inp). The surface reaction mechanism includes 3 site species and one solid bulk species (Si<b>). The problem is, after importing the files, Si<b> did not show in the “Selected Solid Species” list but in the “Selected Species” list (see the pic attached).
I have considered this to be incorrect, so I replaced Si<b> in relevant reaction equations with other species, then move Si<b> from “Selected Species” to “Selected Solid Species”, and change Si<b> back to the equations. Until now, the situation becomes the same with the tutorial case on surface reaction in Fluent-Help. However, I have always suffered from convergence problems, after trying different solution methods and decreasing the Under-Relaxation Factor sufficiently.
I am now not sure if I should move Si<b> from “Selected Species” to “Selected Solid Species”. Is the non-convergence issue caused by that? This problem has plagued me for a long time.
Thank you very much for your time and help.
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Last edited by Quntin; March 11, 2016 at 07:08.
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