CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums

Search Results

Register Blogs Community New Posts Updated Threads Search

Showing results 1 to 7 of 7
Search took 0.00 seconds. Search: Posts Made By: bigeddy
Forum: Main CFD Forum February 20, 2013, 11:55
Replies: 51
Views: 11,039
Posted By bigeddy
Hi LNA, Just dropping a quick question, when...

Hi LNA,

Just dropping a quick question, when you had "small strange oscillations at the large wave numbers" i.e. that little weird peak, do you have data readily available to plot with that...
Forum: Main CFD Forum August 13, 2012, 14:24
Replies: 51
Views: 11,039
Posted By bigeddy
Im not sure sure whether that would be correct,...

Im not sure sure whether that would be correct, its okay to have a wavespace velocity at that wavenumber location but not a velocity derivative at that location. Somewhere you must be multiplying...
Forum: Main CFD Forum August 12, 2012, 15:55
Replies: 51
Views: 11,039
Posted By bigeddy
Hey cfdnewbie, Yeah i have noticed that too!...

Hey cfdnewbie,

Yeah i have noticed that too! I suppose its the motivation for looking into such flows that governs the direction of research. The main motivation behind incomp/comp PSDNS studies...
Forum: Main CFD Forum August 12, 2012, 11:16
Replies: 51
Views: 11,039
Posted By bigeddy
Hi LNA, i've seen this spurious effect in the...

Hi LNA, i've seen this spurious effect in the energy spectrum documented in literature before. It's to do with the energy at oddball wavenumbers on the discretised grid. You'll need to set k...
Forum: Main CFD Forum June 20, 2012, 18:35
Replies: 51
Views: 11,039
Posted By bigeddy
yeah 7-15 large eddy turnover times comes to mind...

yeah 7-15 large eddy turnover times comes to mind with incompressible simulations. Not sure what minimum evolution is for compressible but i know for incompressible we look at dissipation skewness...
Forum: Main CFD Forum June 19, 2012, 17:47
Replies: 51
Views: 11,039
Posted By bigeddy
Cool yep, I remember this issue. If you go to...

Cool yep, I remember this issue. If you go to page 53 of Rogallos 1981 paper you'll see the three equations for e1, e2 and e3. There is a small mistake in the e3 term which should have a negative...
Forum: Main CFD Forum June 19, 2012, 13:16
Replies: 51
Views: 11,039
Posted By bigeddy
I am very familiar with the procedure, I know...

I am very familiar with the procedure, I know this is an old post but did you manage to get a Rogallo code up and working?
Showing results 1 to 7 of 7

 
Forum Jump

All times are GMT -4. The time now is 23:36.

Contact Us - CFD Online - Privacy Statement - Top