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need to calculate Nusselt Numberhey there
need help calculate Nu on blockage a laminar flow in rectangular pipe i uploaded the pic of the geometry http://img706.imageshack.us/img706/8031/ekran1.th.png adiabatic walls blockage has fixed temp 350 K fluid is air with 300 K temp thanx for help... |

Hi!
In cases like this, I create a region (plane, line) near the wall (with a distance dx), then the expression dT/dx can be estimated, and therefore the nusselt number. Otherwise, you can use the variable "wall heat coefficient" I hope this help you, good luck. |

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