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#1 |
New Member
Ahmed Hassan
Join Date: Nov 2017
Posts: 10
Rep Power: 7 ![]() |
Hello all,
I am modelling the flow around a lowrise building. I use the ABL and I have been using 1:1 scale since I started. However, I would like now to reduce my model to a 1:100 scale and I should reduce my ABL logaritmic velocity profile as a consequence. However, since it is not a linear velocity profile, maybe the reduction could not be exactly proportional. I mean, if I used Zref=10 and Uref=10, maybe the reduction wouldn't be Zref=0.1 and Uref=0.1, but Uref=0.08, or something like that, since it is a logaritmic profile instead of a linear profile. I know that the easier way would be to use linear reduction and forgeting about it. But I would like to do a good work. I hope you could provide me some information about it. Thanks in advance. |
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#2 |
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,596
Rep Power: 70 ![]() ![]() ![]() |
Why don't you start using the velocity profile law in non-dimensional form? Then you can get any scaling you want using your physical quantities.
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Tags |
abl, scale, velocity profile |
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