Atmosferic Boundary Layer
Hello there!
I'm currently doing a simulation of a tall building and I have a few doubts, I hope someone can answer them.
Alice |
Hello,
1. I didn't get exactly what you meant.. do you want or do you NOT want to have different boundary layers for each of them? I would recommend that you have same number of layers if both patches are connected, while it is fine to have different sizes and grow rates for them. 2. Use the CFD-Online calculator for that (https://www.cfd-online.com/Tools/yplus.php) You have to specify the desired y+ value, which depends on the turbulence model and wall function approach used. There are several posts discussing this (a quick search will tell you which y+ size you should use). 3. One thing has nothing related to another. Using the ABL gives you a better inlet profile,but you still need to resolve the boundary layer on every no-slip wall you have in the domain. Cheers! |
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