CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > CFX

Particle tracing and Re

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 3, 2003, 14:44
Default Particle tracing and Re
  #1
Jackie
Guest
 
Posts: n/a
Hello all,

I have two questions waiting for suggestions please.

1. I like to put a particle at the inlet boundary and see it's tracing line, but I don't know how can I create a particle and put it in that location.

2. I simulated the flow in a stirred tank. After running the program, relevant Reynold's numbers were reported. Could anybody explain how CFX compute the Reynold's number.

Thank you in advance for all kind answers.

Jackie.

  Reply With Quote

Old   July 3, 2003, 17:21
Default Re: Particle tracing and Re
  #2
zdong
Guest
 
Posts: n/a
I think you can track a particle in Post by plotting a streamline...
  Reply With Quote

Old   July 4, 2003, 07:24
Default Re: Particle tracing and Re
  #3
Jackie
Guest
 
Posts: n/a
Hello zdong,

Did you mean I just simulate stirred tank as one phase flow and put a particle in the tank later?

Can I simulate them as a multiphase flow?, and how can i input a parameter of a particle? such as density, size, number of particle, volume fraction ,or initial location et al.,

Jackie
  Reply With Quote

Old   July 4, 2003, 08:22
Default Re: Particle tracing and Re
  #4
Bob
Guest
 
Posts: n/a
Are you using CFX4, 5.5.1 or 5.6 ? Particle tracking is now included in CFX5.6 not in CFX551 bob
  Reply With Quote

Old   July 4, 2003, 14:13
Default Re: Particle tracing and Re
  #5
Jackie
Guest
 
Posts: n/a
Thank you bob, I allready have CFX5.6.but I still have no idea how to do that . Could you give me some idea?

Thank you very much, Jackie
  Reply With Quote

Old   July 7, 2003, 09:30
Default Re: Particle tracing and Re
  #6
Michael Bo
Guest
 
Posts: n/a
In cfx5 you can add a point (Create\Point...\), and then create a streamline that uses that point(Create\Streamline\ Locations:Point 1) as a start.

Michael Bo
  Reply With Quote

Old   July 8, 2003, 23:30
Default Re: Particle tracing and Re
  #7
zdong
Guest
 
Posts: n/a
That is exactly the way I said... But I have not tried multiphase flow...
  Reply With Quote

Old   July 9, 2003, 16:35
Default Re: Particle tracing and Re
  #8
chris
Guest
 
Posts: n/a
Hello,

Streamlines correspond to particles of zero mass. If you want to simulate particles with non-zero mass use the Lagrangian Particle Tracking as described in the new "Butterfly Valve" Tutorial of CFX5.6.

Chris
  Reply With Quote

Old   August 12, 2003, 00:12
Default Re: Particle tracing and Re
  #9
Paul
Guest
 
Posts: n/a
My understanding is that you were not able to put the particle in the command file and track it in the flow. in order to do that, you can refer to one of examples of particle tracking of CFX4-4 (i am not sure what examples are available in CFX5). If you have further questions, I will give some details. good luck
  Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 23:59.