The first one uses the K-epsilon Turbulent Flow application mode of the Chemical Engineering Module together with the General Heat Transfer application mode from the Heat Transfer Module.
The second approach is a simplified one making use of the heat transfer coefficient library supplied with the Heat Transfer Module.
In addition, this discussion shows how to modify the K-epsilon application mode’s equations to take into account density variations (non-isothermal flow).
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Temperature distribution at an inlet velocity of 100 m/s. |