CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > FLOW-3D

relation between mass momentum source and mass source in component properties

Register Blogs Community New Posts Updated Threads Search

Like Tree1Likes
  • 1 Post By bfox48

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 11, 2017, 11:38
Default relation between mass momentum source and mass source in component properties
  #1
SMY
New Member
 
Join Date: Jan 2017
Posts: 5
Rep Power: 9
SMY is on a distinguished road
Hello
I'm trying to model a momentum source but i get confused.
First: i dont know the relation between mass momentum source settings and mass source part that exists in component properties. Should i define the same both of them?
Second: i define every parameter in mass momentum source and mass source(component properties setting) according to the flow rate but the modeled momentum source is not working true visually and the velocity is very low when fluid is emerging.
Please guide me
Thanks for ur attention
SMY is offline   Reply With Quote

Old   January 13, 2017, 03:21
Default
  #2
Senior Member
 
Hydreaulic structures
Join Date: Sep 2012
Posts: 283
Rep Power: 14
hamidciv is on a distinguished road
hi smy, unfortunately I have the same problem, i define flow rate in mass momentum source, my velocity simulated is difference with the experimental model,
the difference is about 0.10, i have many tried for solve it, but unfortunately i did not succeed, i dont know where is the problem?

If anyone has experience, please guide us. thanks
hamidciv is offline   Reply With Quote

Old   February 6, 2017, 12:34
Default
  #3
New Member
 
brian
Join Date: Apr 2012
Posts: 25
Blog Entries: 1
Rep Power: 14
bfox48 is on a distinguished road
Mass-sources and mass-momentum sources are two different objects. Mass sources are related to a geometry component, where the mass-momentum sources are special objects that are defined separately.

Make sure that these are well resolved by the mesh. If you only have a few cells resolving them, then it might cause an error in flow rates. It will also cause an error when visually displaying in the 3D tab.
Azmina likes this.
bfox48 is offline   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
Error message: Insufficient Catalogue Size Paresh Jain CFX 32 February 3, 2021 03:37
Simulation of Axial Fan Flow using A Momentum Source Subdomain Liam CFX 28 July 16, 2013 08:24
Water subcooled boiling Attesz CFX 7 January 5, 2013 03:32
Mass source, Momentum source theory. diffo FLUENT 4 August 21, 2009 10:26
Problem with Mass source, Momentum source theory diffo Fluent UDF and Scheme Programming 0 August 20, 2009 06:10


All times are GMT -4. The time now is 03:08.