turbulence model for ribbed channel heat transfer
hello everyone,
Recently I've been working on ribbed channel flow,and heat transfer is of great importance in this problem. I found that heat transfer coefficient distribution calculated by the k-e model (with enhanced wall treatment) are not quite satisfying compared to the experimental results. I wonder if there's some logic to guide me to choose a proper turbulence model, or I can only try them one by one? Your remark are highly appreciated! |
Quote:
Ribbed channel flow is a very new area to me can you give more details like the Reynolds number involved, details of operating conditions geometry etc. ? Raashid |
Quote:
|
Quote:
Raashid |
Quote:
|
Quote:
|
hi
you probably need to go to a low re turbulence model with Y+ around 1, k-w-sst is a good model. Experience would suggest that the metal temperature is probably being predicted too high. I found this when I did cht analysis on turbine blades. Changing to a low Re model will reduce the metal temperature by around 10 K. Only problem is you'll need a lot of cells 20 -25 prism layers in the boundary layer allan |
Quote:
|
All times are GMT -4. The time now is 10:30. |