|May 17, 2013, 06:12||
Histogram on a selected volume, Droplet diameter profile
Join Date: Oct 2011
Location: Thessaloniki, Greece
Posts: 74Rep Power: 7
I am currently computing an injection of water droplets into a cylinder pipe.
I am trying to plot the droplets diameters profile.
For this purpose, when plotting the profile for the entire pipe, I am using the Plot>Histogram option. I am then getting the histogram representing my droplet diameter distribution on all the pipe (actually, of the Lagrangian Phase, as I must select the Lagrangian phase as the part to be plotted).
I have several questions concerning Histogram and field functions:
1/My concern is the following: I wish to plot such histogram only on a small part of my pipe, not the entire pipe. Does anyone know how to make a volume selection in order to plot the histogram of field functions values restricted only to that volume?
2/ One solution I tried was to define afield function defined only on a part of the pipe ( for example ($$Position < 0.5) $ParticleDiameter : 0) is defining a new field function with the droplet diameters from X=0 to 0.5, and putting the diameter to 0 for droplets situated at the end of the pipe.
However, when I will plot, it will report also n droplet of diameter 0, which is not really stisfactory.
3/ I was thinking to first export the Particle Diameter to a Table, to then extract the data (Diameter and Particle Count) for the desire position, but I do not success to make it work. If someone have some hint to do this?
4/ On additional question is about the field function ParticleCount. What does it represent exactly? When I am reading the values, it shoes for example, 0.5. However, when I plot the histogram weightin the droplet diameter with the DropletCount function, the count can go up to 30 (which I like)
When I export a histogram table, it names ParticleCount as 'ParticleCount - average", with value 0.5, then 'ParticleCount - sum' and gives the value 30, and finaly, I can get a 'ParticleCount - accum' which is the cumulative sum of the droplet count for each bin.
I am interested in getting 'ParcticleCount - sum', but when you export the field function, you are getting the value of 'ParticleCount - average'.
Does anyone knows how to get directly access to ParticleCount - sum?
Thanks a lot for any help
|droplet diameter, field function, histogram|
|Thread||Thread Starter||Forum||Replies||Last Post|
|BlockMesh FOAM warning||gaottino||OpenFOAM Native Meshers: blockMesh||7||July 19, 2010 14:11|
|droplet absorption diameter||Claudia||CFX||4||April 2, 2010 06:14|
|Post Processing (droplet volume calculation)||Khalid Rahman||FLOW-3D||3||March 13, 2009 14:57|
|fluent add additional zones for the mesh file||SSL||FLUENT||2||January 26, 2008 12:55|
|Miminum diameter of droplet||bk||CD-adapco||0||July 12, 2005 06:54|