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mcm February 3, 2003 21:31

simple heat pipe flow-beginner
After calculating the heated turbulent pipe flow (2d axisym), I compared Nusselt No. with Dittus Boelter Eq's. but, error is close to 15%. I used standard k-e with two-layer model wall treatment. grid is Nr=50 (wall clustering, y+ = 1) I don't know what is wrong.

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