Boussinesq model for natural convection

dreamz · October 8, 2013, 11:50

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.

ASAD · October 8, 2013, 12:43

click on materials and then go in materails air there u get the option in density u can select boussenisq model

dreamz · October 8, 2013, 13:00

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..

ASAD · October 8, 2013, 14:10

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

October 8, 2013, 11:50	Boussinesq model for natural convection	#1
dreamz Member Ashutosh Join Date: Jul 2013 Posts: 98 Rep Power: 13	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.

October 8, 2013, 12:43	bossenisq model	#2
ASAD New Member TARIQ JAVED Join Date: Jul 2013 Posts: 8 Rep Power: 13	click on materials and then go in materails air there u get the option in density u can select boussenisq model

October 8, 2013, 14:10	bossenisq model	#4
ASAD New Member TARIQ JAVED Join Date: Jul 2013 Posts: 8 Rep Power: 13	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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October 8, 2013, 13:00		#3
dreamz Member Ashutosh Join Date: Jul 2013 Posts: 98 Rep Power: 13	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..