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why does the contours of pressure have no chance?

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Old   November 8, 2008, 02:30
Default why does the contours of pressure have no chance?
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HI there, wondering if I could get some suggestions on my model.I have modeled counterflow and heat transfer in two separated fluid regions separated by a wall,as illustrated in figuea 1.A cold air and a hot air respectivetly.They are both laminar flows.I also create two different kind of materials and set the conditions for all the boundary,see figue 1 shown the following web link. Then the solution reaches convergence,but the results , such as out-let temperatures both of the fluids, are different to the ones shown experimontal investigation. When i look at the pressure drop,the contours of pressure are all the same in the fluid regions, its magnitudes have no chance, just only show one color, why? everyone can help me? you can see the figue 1 following this link

Thank you in advance!
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