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

Number of Positions

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 13, 2011, 15:19
Arrow Number of Positions
  #1
Member
 
Timothy
Join Date: Apr 2010
Posts: 33
Rep Power: 16
tav98f is on a distinguished road
In the CFX modeling guide they say, "For transient simulations, you must specify the number of injected particles per unit time. You can specify the number directly or proportional to the injected mass flow rate. In the latter case, you must specify the number of particles per unit time and the mass flow rate. In a transient simulation you can specify the number of particles or mass flow rate as an expression in time."

is "injected mass flow rate" the mass of the injected particles per unit time?

"In the latter case, you must specify the number of particles per unit time and the mass flow rate."
-It seems like this would over-define the particle injection. If I specify the number of particles per uint time then the mass of the injected particles per unit time should also be specified and should be equal to: (the sum of the masses of the particles injected over a time period)/(the length of that time period).

There must be something I am not understanding here. Can anyone explain this to me?

Thank you for your time,
Timothy
tav98f is offline   Reply With Quote

Old   May 23, 2013, 20:34
Default
  #2
Member
 
Liliana de Luca Xavier Augusto
Join Date: Feb 2013
Posts: 68
Rep Power: 13
liliana is on a distinguished road
I share the doubt!

Anyone can help?

It seems that we have to specify the number of particle twice.
liliana is offline   Reply With Quote

Reply

Tags
injection, particle

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
[mesh manipulation] Mesh Refinement Luiz Eduardo Bittencourt Sampaio (Sampaio) OpenFOAM Meshing & Mesh Conversion 42 January 8, 2017 12:55
DecomposePar unequal number of shared faces maka OpenFOAM Pre-Processing 6 August 12, 2010 09:01
[blockMesh] BlockMeshmergePatchPairs hjasak OpenFOAM Meshing & Mesh Conversion 11 August 15, 2008 07:36
Unaligned accesses on IA64 andre OpenFOAM 5 June 23, 2008 10:37
[Commercial meshers] Trimmed cell and embedded refinement mesh conversion issues michele OpenFOAM Meshing & Mesh Conversion 2 July 15, 2005 04:15


All times are GMT -4. The time now is 16:57.