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

injection/ particle tracking

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 29, 2004, 18:13
Default injection/ particle tracking
  #1
ioana
Guest
 
Posts: n/a
Dear CFX users,

I am trying to simulate the following case: air flows through a pipe. Water droplets are injected from a arbitrary location situated in the pipe wall.

The difficulties are:

1. How can I define the injection points/regions?

2. It is possible to activate evaporation for the water droplets?

Thank you very much,

Ioana
  Reply With Quote

Old   October 22, 2004, 18:29
Default Re: injection/ particle tracking
  #2
Pravallika
Guest
 
Posts: n/a
Hello Ioana,

Here is the answer for your 1st question.

Yes, you can define the injection points. This has to be done in the comman file. You can find more on this in CFX manual. For your convenience I attached a sample code below.

#CALC

NORMVEL = 45.72;

PARTDIAM = 300.0E-6;

PMFLOW = 0.0001;

NUMPART=1000;

XPSTART=0.0;

XPEND=0.75;

INC=(XPEND-XPSTART)/(NUMPART-1); #ENDCALC
:>MODEL BOUNDARY CONDITIONS
:>PARTICLE TRANSPORT BOUNDARY CONDITIONS

POSITIONS IN X DIRECTION #NUMPART* 0.0

POSITIONS IN Y DIRECTION #XPSTART TO #XPEND BY #INC

POSITIONS IN Z DIRECTION #NUMPART* 0.0

INITIAL PARTICLE DIAMETERS #NUMPART* #PARTDIAM

PARTICLE MASS FLOW RATES #NUMPART* #PMFLOW

U VELOCITY #NUMPART* #NORMVEL

V VELOCITY #NUMPART* 0.0

W VELOCITY #NUMPART* 0.0
  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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Blood Damage Modelling via Particle Tracking in a Centrifugal Heart Pump scatman CFX 7 January 8, 2018 01:59
massless particle tracking problem Renold FLUENT 0 January 26, 2011 15:23
Particle Tracking for ion Jun CFX 2 August 31, 2010 09:19
Number density tracking rather than particle tracking Rebecca Main CFD Forum 2 April 23, 2009 13:52
particle injection and particle tracking yair FLUENT 0 July 15, 2008 09:27


All times are GMT -4. The time now is 03:39.