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Buoyancy - natural convection

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Old   June 13, 2014, 11:57
Default Buoyancy - natural convection
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Luis Delgado
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Hi, I need a help.
I am running a simulation about a water heating in a pot. On the low surface the temperature is 370 K, and the temperature on the free surface (upper surface) is 300 K, therefore, there should be a difference of density between the low and upper surface of liquid, and to create a natural convection. But it is not happen. The density is the same in all liquid. Why???Thank you.
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