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Drag coefficient for plate perpendicular to airflow 
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#1
Mar2612, 10:21 PM

P: 26

http://en.wikipedia.org/wiki/Drag_coefficient
from wikipedia, it is written 1.982.05 for flat plate perpendicular to flow(2D) , but I have a differrent b/h ratio plate, where h=157mm and b=816mm , b/h=5.197 how to get the drag coefficient in this case? Thanks. 


#2
Apr912, 05:06 PM

P: 16

What are your flow conditions?
Laminar? Turbulent? Are we just talking about ambient air? or God blowing on the plate... =) Give me the Reynolds number and I can help you out. Cheers =) 


#3
Apr912, 10:21 PM

P: 365

For a plate perpendicular to the flow the reynolds number will not matter much. That wikipedia page gave a Cd for a 3d flat plate and you will probably be ok using that. Otherwise there is not an easy way to figure this out, your best bet would be to find some reference with similar measurements



#4
Apr912, 10:37 PM

PF Gold
P: 1,503

Drag coefficient for plate perpendicular to airflow



#5
Apr1012, 04:49 PM

P: 16

Apologies,
Did not properly read OPs question. I thought he was talking about parallel flow on plate. Whoops =) 


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