Abstract
A non-Boussinesq weakly compressible-ϐlow numerical model is used to study the temperature and ϐluid velocity distribution in a cylindrical tank with a heating element partially immersed in a temperature dependent ϐluid. This conϐiguration is commonly found in immersion heaters and electrolytic cells where the heating element does not extend along the entire axial length of the cylindrical vessel. A very particular vortex pattern arises inside the cell which stratiϐies the domain dividing it into two regions of different temperatures. With the increase in aspect-ratio, the Nusselt number at the surface of heating element increases, while the Nusselt number at the inner surface of cylindrical tank decreases.
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