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April 7, 2013, 10:49 |
Natural/Free Convection over flat plate
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#1 |
New Member
Allen Doss
Join Date: Apr 2013
Posts: 10
Rep Power: 13 |
Hello everyone,
I need help solving a problem on fluent. Free convection over a vertical flat plate with non uniform heat flux Initially i'm doing it for constant heat flux..All done using ansys fluent 1.Geometry:rectangle-0.3m by 1m 2.Mapped mesh:3000 cells 3.Boundary conditions: plate-1000w/m2,(on the left) top- pressure outlet ,0 gauge pr..temp 300k bottom- pressure inlet ,0 gauge pr..temp 300k far-symmetry(on right) I`ve got the temperture contour ,which looks ok..but im unable to get the correct velocity profile on the chart location of line for velocity profile-(0.001,1) (0.001,1) X axis-velocity u Y axis-Y.. please help.. ini.png initial.jpg velocity.jpg mesh.jpg |
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April 9, 2013, 01:12 |
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#2 |
New Member
Emon P
Join Date: Mar 2013
Posts: 22
Rep Power: 13 |
Hi, I think the problem is that you didn't define the properties of airs.
In natural convection, the density should be defined boussinesq approximation, and also don't forget edit Thermal Expansion Coefficient. |
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April 9, 2013, 05:48 |
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#3 | |
New Member
Join Date: Apr 2013
Posts: 20
Rep Power: 13 |
Quote:
When we choose boussinesq and thermal expansion coefficient, Fluent initialize a value at 0. Should we let the default value ? Thanks very much |
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