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Boussinesq model for natural convection

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Old   October 8, 2013, 10:50
Default Boussinesq model for natural convection
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Ashutosh
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I am analysing a problem in a 2D square cavity maintained at different boundary conditions. The flow within the cavity will be circulating due to natural convection. I refered FLUENT tutorial provided at-
https://www.sharcnet.ca/Software/Flu...g/main_pre.htm

however, they enable radiation model first. In my problem I want to neglect radiation since my temperatures are not that high. I can specify the gravity as shown in the tutorial, but I could not get the Boussinesq parameter option. How to use Boussinesq model without enabling radiation effects.
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Old   October 8, 2013, 11:43
Default bossenisq model
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click on materials and then go in materails air there u get the option in density u can select boussenisq model
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Old   October 8, 2013, 12:00
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okay.. so if possible can you clarify what the boussinesq parameter means when we specify operating parameters...

Another thing, in the tutorial it says put density value as 1000kg/m3.. Its actually density of water. I tried searching for explanation for that.. They mentioned refer to user manual.. Can you provide a link for that..
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Old   October 8, 2013, 13:10
Default bossenisq model
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go in materailas click on air and water instead where write air then give the density value and below u hv option change/creat click on it and it gives option overwrite air click no water is added in matrials list
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