[Seongmin]

Hello guys, I have been doing some simulations to predict HTC of solid parts (composites) inside a fluid domain (autoclave).

I have encountered a problem in which I consistently obtain an overpredicted HTC when using k-w SST turbulent model while the result with Spalart-Allarmas is in the same magnitude with the experimental data.

For example,
If the experimental data is 70W/m^2K.
I obtain:
- 75-80 with S-A turbulent model
- 110 with k-w SST model

My geometry represents the real one, the mesh quality is good, max y+ near the observing solid is 3 (decreased it to 1 but no improvement) and everything seems good.

In this case, I have some questions:
- Should I modify some k-w SST constants?
- k-w SST uses 2 eq instead of 1 (S-A), is it possible that S-A returns a more reliable result?
- Is the case, can I trust S-A model result at least ?