I am not so experienced in CFD calculations and are wondering how I should calculate the heat transfer coefficient from a calculation of the velocitys with k-epsilon modelling and wall laws. I don't calculate the temperature so i must use the velocity to get the heat transfer coefficent. If anybody have a suggestion, please let me know.

I am looking for a job but, if you can hire me I shall be of good help to you.

Thanks.

Hi,

I might have an answer you don't like. Calculate the temperature field and resolve the turbulent quantities down to the wall, without using any wall functions - then you may get a chance of predicting the heat transfer with some accuracy. Otherwise take a look in a Heat Transfer Handbook, they have a lot of correlations using Reynols number and Prandtl number. Whether your case is included I wouldn't know. I do heat transfer (and flowfield) predictions in ribbed duct, which are rotating, similar do what you found inside a turbine blade (in gas turbines).

Hope this could have help you, eventhough it wasn't the answer you was looking for,

Cheers Jonas