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Temperature dropping off

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Old   May 10, 2010, 10:42
Default Temperature dropping off
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jeff osborne
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Hey all,

I'm trying to learn how OpenFOAM deals with heat transfer and so am just practicing simple problems right now. I am simulating a simple heated plate in air using buoyantPisoFoam (I know that is the compressible solver but I heard elsewhere that buoyantBoussinesqPisoFoam was buggy so I just ignored that). My atmosphere is initally at 300K and my heated plate at a constant 400K. What happens is that after about 1s of simulation time has elapsed the temperature above the plate drops down to about 220K for some reason. I have attached some pictures to try and show the progression. The simulation time is 5seconds. Any help would be really appreciated

Attached Images
File Type: jpg Temperature.0000.jpg (17.6 KB, 7 views)
File Type: jpg Temperature.0030.jpg (22.1 KB, 8 views)
File Type: jpg Temperature.0098.jpg (28.0 KB, 9 views)
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Old   May 11, 2010, 12:43
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jeff osborne
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Anybody have an idea about this?

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