Ring of particles? (trying to set up multiphase)

zmaxcomputer · August 26, 2010, 20:53

Hi! I am trying to have my particles enter a pipe/vessel in a "ring". I have used a bunch of trial and errors with no luck. The cone injection options i thought would work didnt (point cone, hollow cone, ring cone, full cone). I figure i must be doing something wrong.

Thanks for all your time!

-max

mvoss · August 27, 2010, 03:49

how did you set the position of the particles so fare?

neewbie

ghorrocks · August 27, 2010, 06:46

I have recently done a model where I wanted the particles injected in a line of over 1000 points. There seems to be a limit of about 25 points when doing it by CCL, so the only way is by using a fortran routine to set the locations. Then you can stick them whereever you like.

zmaxcomputer · August 27, 2010, 10:10

Hi!

25 points is more than enough for me. I used both a full cone and a ring cone method. I also tried an annulus (changing the inner and outer radius). still i can not get a "ring" of approx 25 points. Is there a way to set up the points where i want them exactly for the 25 points without writing code?

i can upload some screen-shots if it will help.

thanks again!

ghorrocks · August 28, 2010, 06:48

Define each injection point as a cone with zero angle. Each injection point has its location defined to go around the ring. This can all be done in CFX-Pre or CCL so no fortran.

August 26, 2010, 20:53	Ring of particles? (trying to set up multiphase)	#1
zmaxcomputer New Member max Join Date: Aug 2010 Posts: 19 Rep Power: 15	Hi! I am trying to have my particles enter a pipe/vessel in a "ring". I have used a bunch of trial and errors with no luck. The cone injection options i thought would work didnt (point cone, hollow cone, ring cone, full cone). I figure i must be doing something wrong. Thanks for all your time! -max

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to show the transient case?	H.P.LIU	Phoenics	7	July 13, 2010 04:31
multiphase flow VOF model set up	rahaman	FLUENT	0	June 9, 2009 03:49
multiphase Eulerian particles	Zbynek	CFX	5	September 24, 2008 11:21
Problems with installation of OpenFoam	sheyer	OpenFOAM Installation	8	July 28, 2008 03:45
Problems with installation	jonititan	OpenFOAM Installation	4	November 6, 2005 04:16

August 27, 2010, 03:49		#2
mvoss Senior Member Matthias Voß Join Date: Mar 2009 Location: Berlin, Germany Posts: 449 Rep Power: 20	how did you set the position of the particles so fare? neewbie

August 27, 2010, 06:46		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	I have recently done a model where I wanted the particles injected in a line of over 1000 points. There seems to be a limit of about 25 points when doing it by CCL, so the only way is by using a fortran routine to set the locations. Then you can stick them whereever you like.

August 27, 2010, 10:10		#4
zmaxcomputer New Member max Join Date: Aug 2010 Posts: 19 Rep Power: 15	Hi! 25 points is more than enough for me. I used both a full cone and a ring cone method. I also tried an annulus (changing the inner and outer radius). still i can not get a "ring" of approx 25 points. Is there a way to set up the points where i want them exactly for the 25 points without writing code? i can upload some screen-shots if it will help. thanks again!

August 28, 2010, 06:48		#5
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Define each injection point as a cone with zero angle. Each injection point has its location defined to go around the ring. This can all be done in CFX-Pre or CCL so no fortran.