CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

Filtering fluctating data

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   July 28, 2010, 14:43
Default Filtering fluctating data
New Member
Join Date: Nov 2009
Posts: 26
Rep Power: 10
sanchezz is on a distinguished road
Hi there,

I have a few simulation where the values I'm interested in don't completely converge but fluctuate around a certain value.
While the monitoring points are fluctuating the error values get continually smaller.

First set of data, seems easier:

First set of data, seems harder:

Since I never took any proper statistics class, I have no clue on how to proceed here.

Is it correct to say: if the error is smaller than 1e-4, the solutions is acceptable. Therefore I average all the monitor values that have a correlating error smaller than 1e-4 - even if the monitor values have clearly not converged at the first few iterations that meet the criterium of having an error smaller than 1e-4?

Or is it better to say: I can see that my monitoring values are converging, so no matter what the error of the simulation is, I just average all the monitoring values that seem to fluctuate around a certain value rather than showing a certain trend?

Hard to describe my problem, I hope you got what I mean

sanchezz is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
【Help】"Error: Update_Time_Level: invalid data" Chen FLUENT 2 August 24, 2014 07:51
export data at nodes Meenu FLUENT 1 December 30, 2011 02:24
Saving particle (DPM) data to file? Philip FLUENT 2 June 12, 2006 01:41
How to update polyPatchbs localPoints liu OpenFOAM Running, Solving & CFD 6 December 30, 2005 18:27
How to do filtering of 3D DNS data chinthakindi Main CFD Forum 0 January 27, 2004 09:14

All times are GMT -4. The time now is 01:02.