Hi guys,

I am using Star-CD to simulate coolant flows. We need to input Tbulk when calculating the HCoefficient. From my understanding, Tbulk should be the bulk temperature relative to the reference temperature (not absolute temperature), but I didn't find anything from the Star-CD manuals to support this. Who can confirm this for me?

Thanks,

Jimmy

You could confirm it by getting the boundary heat flux, temperature and hcoeff for the same boundary cell and doing the calculation by hand.

Alternatively work up a small OPERATE script to calculate Hcoeff for all boundaries then subtract Prostar's Hcoeff from it and confirm that all cells show essentially zero.

I believe that you are correct in your understanding of Hcoeff.

Thank you very much for your help.

Now I use the relative bulk temperature (Tbulk-Tref) to calculate the Hcoefficient, the result looks reasonable.

softwar