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[1550] Error about duplicated species

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Old   July 7, 2021, 05:24
Exclamation [1550] Error about duplicated species
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Hi everyone,

I try to model heat transfer by radiation in a combustion oven using the Converge CFD software. However, I get an error when I try to solve:

[1550] There are duplicated species in the species list.

When I open the log.out, I see that the problem is about 7 species O2, H2O, CO2, N2, CH4, CO and H2.

- At the moment I have no physical models active, so the error is not due to a physical model.
- Also, when opening Materials\Species, I have species listed only in the Gas-tab, the rest of the tabs don't contain species.
- I checked species.in, but I don't see duplicate elements in there.
- Studio files are attached, so that you can check it out yourself!

I hope some of you can help me fix this error, thanks in advance!
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Old   July 7, 2021, 17:28
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Hi,



I see there's no combustion in your physical models setup. If so, you can turn off the reaction mechanism to get rid of this error.
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Old   July 8, 2021, 06:32
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Thank you! So now I turned off the reaction mechanism and turned on the Radiation Modeling [FVM].

The Final Validation / Validate All don't yield errors anymore, so tried to run it. However, the solver is aborting again and tells me to "correct post.in and try again".

What could be the problem? (files attached again)
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Old   July 8, 2021, 17:24
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Did you include any redundant items in post.in? Please try to remove those unnecessary items.
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Old   July 8, 2021, 18:00
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I think so. My post.in file just states the following lines:

cells:
geometry: idreg
general: [density, pressure, temperature, velocity]
turbulence: [eps, tke, turb_viscosity, yplus]
species_massfrac: [NO2, NO, CH4, O2, N2, CO2, H2O, CO]
passive: NOX


The log.out file ends with:

Errors found in post.in:
NOX


However, in the case setup in Converge Studio I cannot find a NOX option with is turned on or something like that...
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Old   July 9, 2021, 16:42
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I think you can try to remove NOx in post.in. The NOx is probably listed in species.in.
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