CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   Simulations at different AoA (http://www.cfd-online.com/Forums/fluent/71935-simulations-different-aoa.html)

ghost January 20, 2010 08:39

Simulations at different AoA
 
Hi,

I am trying to find out the change of lift coefficient with respect to AoA of an airfoil.

To do this I run the same case but at different Aoa in fluent. All cases start from scratch and iterate till converge.

Today I heard from my friend that I could have run a single case till converge, change the AoA, then continue running that case till converge for new AoA. Will the results be identical and more accurate? This will greatly save a huge amount of time.

Thank you.

ghost January 22, 2010 10:10

anyone has any idea regarding this?

DoHander January 22, 2010 12:19

If you use the steady flow solver yeah, you can in principle start from any initial solution. So a wise choice will be to do the calculation for say 0 degree, wait until this case converge.

Start a new case with a different AOA say 2 degree but use as initial solution the solution from 0 degree.

For 4 you will use the solution for 2 as initial solution and so on ...

Do

ghost January 23, 2010 11:36

thank you very much...yes im using steady flow solver...thanks for the confirmation.


All times are GMT -4. The time now is 06:24.