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December 14, 2010, 03:01
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flow in a vertical annulus
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New Member
Arun
Join Date: Dec 2010
Posts: 1
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hi,, i am modelling a flow in vertical annulus with porous media, with centrally placed heater and flow inlet and outlet conditions. it is surrounded by insulation. boundary conditions given are velocity inlet , volumetric heat generation and out flow. i am getting a reversed flow and there is no temperature rise in the annulus.
help me..... |
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December 14, 2010, 03:15
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#2 |
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New Member
bunny
Join Date: Dec 2010
Posts: 5
Rep Power: 15 |
hi.... i am also dealing with the same kind of problem. i have problem with out flow condition. i extended the domain and imposing new conditions....
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December 16, 2010, 02:35
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#3 |
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New Member
bunny
Join Date: Dec 2010
Posts: 5
Rep Power: 15 |
i tried it n i didnt got the answer.....can any body help us
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December 16, 2010, 12:15
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reversed flow
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#4 |
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New Member
Join Date: Dec 2010
Posts: 5
Rep Power: 15 |
hi
Check your operationg conditions..(Gravity) and try changing BC for velocity use direction and magnitude option. good luck |
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December 22, 2010, 02:48
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#5 |
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New Member
bunny
Join Date: Dec 2010
Posts: 5
Rep Power: 15 |
i gave velocity inlet and outflow condition, volumetric heat generation from heater and remaining side adiabatic.. i am using boussinesq approximation....
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December 22, 2010, 04:14
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#6 |
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New Member
Join Date: Dec 2010
Posts: 5
Rep Power: 15 |
Change your outlet BC to outflow. and let us know about your results.
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December 23, 2010, 07:27
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#7 |
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New Member
bunny
Join Date: Dec 2010
Posts: 5
Rep Power: 15 |
if i use air instead of water ..temperatures r rising upto 100 deg. for water its not lik that. volumetric heat generation is 300000 w/m^3.
also pls tell me how to model a porous medium.... |
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