Point sampling

sathiah · March 12, 2005, 05:28

I need to plot the velocity and k, epsilon at a particular point in a domain.
What is the name of the utility for this.
I know "sample" is used along line.
Pratap

mattijs · March 12, 2005, 06:01

You can use sample along a line (i.e. 'uniform' sampleSet type) with only one point (if that works - never tested it ;-) or use the 'cloud' sampleSet type.

See http://www.opencfd.co.uk/openfoam/doc/userse31.html

Cloud takes a 'points' entry in its dictionary instead of 'start' and 'end'. Just look at the error messages if you get it wrong and you should be able to work out the syntax.

Mattijs

(does anyone have some time to spare to put all the sample options into FoamX? It now seems to do only part of it)

January 11, 2007, 11:58

HI,
I will write in the a file a filed in a fixe position vs time. How can I do this ?
I tried to modifie sample.C but when I write the new value of filed with the current time it delete the old one .
thanks a lot

March 12, 2005, 05:28	I need to plot the velocity an	#1
sathiah New Member Pratap Sathiah Join Date: Mar 2009 Posts: 3 Rep Power: 17	I need to plot the velocity and k, epsilon at a particular point in a domain. What is the name of the utility for this. I know "sample" is used along line. Pratap

March 12, 2005, 06:01	You can use sample along a lin	#2
mattijs Senior Member Mattijs Janssens Join Date: Mar 2009 Posts: 1,419 Rep Power: 26	You can use sample along a line (i.e. 'uniform' sampleSet type) with only one point (if that works - never tested it ;-) or use the 'cloud' sampleSet type. See http://www.opencfd.co.uk/openfoam/doc/userse31.html Cloud takes a 'points' entry in its dictionary instead of 'start' and 'end'. Just look at the error messages if you get it wrong and you should be able to work out the syntax. Mattijs (does anyone have some time to spare to put all the sample options into FoamX? It now seems to do only part of it)

January 11, 2007, 11:58	HI, I will write in the a fil	#3
racb Guest Posts: n/a	HI, I will write in the a file a filed in a fixe position vs time. How can I do this ? I tried to modifie sample.C but when I write the new value of filed with the current time it delete the old one . thanks a lot

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Sampling Reynolds stress	antonio_ing	OpenFOAM Running, Solving & CFD	0	February 27, 2009 07:59
Help! Sampling!	HP	FLUENT	0	May 15, 2008 11:29
sampling theorem and cfd	luis	Main CFD Forum	0	December 18, 2006 00:06
Sampling of statistical data	Boerge	Main CFD Forum	0	July 25, 2006 05:40
Sampling on a patch	liu	OpenFOAM Running, Solving & CFD	3	May 25, 2005 07:52