|May 10, 2012, 14:32||
reactingFoam RAS Turbulence Statistics
L.Bryce Whitson Jr.
Join Date: Jun 2011
Posts: 18Rep Power: 6
I am still a little new to OpenFOAM and am having a problem calculating some turbulence statistics. What I am interested in is the Mean and Standard Deviation of the scalar values of a 100ms simulation. In doing the calculation, I am using the k-e turbulence model and starting with an an already "converged" solution, ie it should be at steady state for the most part. The flow is of a reacting jet flowing into quescent air.
It was my understanding that reactingFoam is an unsteady RANS solver, so I set up a fieldAverage of the scalars to calculate the Mean and Prime2Mean values. If I am not mistaken, Prime2Mean is simply the square of the standard deviation. When the calculation was complete, I got a Prime2Mean value very close to 0 which I believe means that the average flow and the instantaneous flow are the same at all points in time, which I know is not true.
Can anyone shine some light on to what I may have done incorrectly? Is there a better way to do this that I am not aware of?
|rans, reactingfoam, turbulence|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Turbulence postprocessing||Mohsin||FLUENT||0||September 19, 2011 21:05|
|multiphaseInterFoam for RAS turbulence model||chiven||OpenFOAM Bugs||7||August 23, 2011 02:52|
|Turbulence dampening due to magnetic field in LES and RAS||eelcovv||OpenFOAM||0||June 8, 2010 11:35|
|Discussion: Reason of Turbulence!!||Wen Long||Main CFD Forum||3||May 15, 2009 09:52|