|December 12, 2011, 23:07||
Reynolds for a rotary wing/blade
Join Date: Dec 2010
Location: Seoul, South korea
Posts: 183Rep Power: 5
Hi dear All,
I want to know that when we are working with a wind turbine with a very long blade, for "Lift coefficient_ AOA" calculation which Reynolds number must be worked with.
I am thinking because in different radial positiions the velocity is changing according to the "Local R".
-Please consider the chorld length is constant;
-Velocity of wind is 10 m/s , and think R= 5 m , =7.5 Rad/s
So, the Relative Velocity at the tip = [ (10)^2+(5*7.5)^2 ]^ 0.5 ~ 39 m/s and then the Reynolds at the TIP will be 4 times the Reynold of free stream.
Now when we want to check the values of Cl-AOA , which Reynolds number we must consider? I think I must work with local Re and for different radial positions I must calculate Re number and work with that local Re.
Would you please tell me the answer for this question
|reynolds, rotary wing/blade|
|Thread||Thread Starter||Forum||Replies||Last Post|
|New implemented algebraic Reynolds stress model||volker||OpenFOAM||13||October 21, 2013 00:01|
|Two way particle coupling in OF 2.0 and the particle reynolds number||preichl||OpenFOAM||7||February 9, 2012 15:38|
|Reynolds Stress Models||Jade M||Main CFD Forum||0||April 21, 2010 16:38|
|Reynolds Stress Boundary Conditions||tstorm||FLUENT||0||July 27, 2009 14:44|
|Obtaining Reynolds Number in FLUENT||Emmanuel||FLUENT||1||April 21, 2006 17:53|