Re: [ESPResSo-users] OIF - numbering of particles

[Ivan Cimrak]

Hi Markus,

In OIF, the extended particle is always composed of the same point-like particles. For example, lets have two extended particles, say extA and extB (or two objects-in-fluid), each having 400 points in the triangulation defining the boundary of the extended particle. This means that particles 0-399 are those representing extA and particles 400-799 are those representing extB.


Concerning your question: "In two consecutive vtk-files, does a specific particle stands in the same line of the vtk-file (that way, it would be possible to track the particles on the surface)?"

Yes, the same line stands for the same particle.

But I would like to draw your attention to the OIF command oif_object_output. Using this command one can output different useful information about the extended particles. There is a switch vtk-pos that outputs VTK files for the extended objects. More detailed information can be found in the OIF User Guide available at our website:

http://cell-in-fluid.fri.uniza.sk/en/content/oif-espresso

I hope this helps,

Ivan

Dňa 15.9.2014 14:44 Wink, Markus wrote / napísal(a):

Dear all,

 

I have got a question concerning the OIF implementation. There, the extended particle is represented by point-like particles on the surface of the object. I usually safe the coordinates of the point-like particles as vtk-files. In two consecutive vtk-files, does a specific particle stands in the same line of the vtk-file (that way, it would be possible to track the particles on the surface)? Or does ESPRESSO somehow do a recalculation and mix the particles again?

 

I hope the question is clear.

Thanks for your answer and help.

 

Greetings

 

Markus Wink

 

 

-- 
Ivan Cimrak
FRI Zilinska Univerzita v Ziline
personal web: http://www.kst.fri.uniza.sk/~icimrak/
cell-in-fluid group: http://cell-in-fluid.fri.uniza.sk