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Old   February 20, 2019, 05:12
Default Natural convection
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I'm modeling a heat sink, (natural convection), the problem that there is no velocity vectors are generating and the velocity is zero even there is a temperature difference and the gravity model is on.
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Old   February 20, 2019, 14:05
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Are you using a fluid with temperature-dependent density, e.g. ideal gas? Constant density won't cut it.
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Old   February 21, 2019, 06:44
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Thank you, I got the answer it was just a stupid mistake
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