CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   OpenFOAM Running, Solving & CFD (https://www.cfd-online.com/Forums/openfoam-solving/)
-   -   k-omega calculation of wigley hull case (https://www.cfd-online.com/Forums/openfoam-solving/136650-k-omega-calculation-wigley-hull-case.html)

kansetsu7 June 2, 2014 03:54

k-omega calculation of wigley hull case
 
hello, I run the wigley hull cases download at
http://sourceforge.net/projects/open.../EricPaterson/
the case goes well, but I have question about the k and omega value
in "steadyResistance" case I use http://www.cfd-online.com/Tools/turbulence.php and following Properties to calculate k & omega
Freestream velocity=1
Turbulence intensity/level=1
Kinematic viscosity=1e-6
Eddy viscosity ratio=10
the result is k=0.00015, omega =15
but in the steadyResistance case is k=0.00015(same), omega =2

also, in the "transientResistance" case
use: Freestream velocity=2
the result is k=0.0006, omega =60
but in the transientResistance case is k=0.1, omega =400

Why the k&omega values I calculated is different from the tutorials?


All times are GMT -4. The time now is 15:39.