CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > Siemens > STAR-CCM+

Calculation Hidrodynamic & Aerodynamic Lift

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

Like Tree1Likes
  • 1 Post By ping

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 4, 2021, 16:34
Default Calculation Hidrodynamic & Aerodynamic Lift
  #1
New Member
 
ali_Ebrahimi
Join Date: Jan 2021
Posts: 9
Rep Power: 5
ali_ebrahimi is on a distinguished road
Hi
I work in the field simulation CFD high speed planing in STAR CCM+.
I want to calculate Hydrodynamic & Aerodynamic Liftseparately in multiphase flow (water & Air).

Do you suggest a way to do this?
ali_ebrahimi is offline   Reply With Quote

Old   January 7, 2021, 05:46
Default
  #2
Senior Member
 
Ping
Join Date: Mar 2009
Posts: 556
Rep Power: 20
ping is on a distinguished road
this is easy using a new threshold with the part surface you require forces measured on as the input part, the scalar field function set to the volume fraction of water or air, and the range 0,.5 or .5,1 depending on which field is chosen. this creates a new derived part which is a subset of the chosen input part and you do your force calcs on this new part
ping is offline   Reply With Quote

Old   January 8, 2021, 03:03
Default
  #3
New Member
 
ali_Ebrahimi
Join Date: Jan 2021
Posts: 9
Rep Power: 5
ali_ebrahimi is on a distinguished road
Quote:
Originally Posted by ping View Post
this is easy using a new threshold with the part surface you require forces measured on as the input part, the scalar field function set to the volume fraction of water or air, and the range 0,.5 or .5,1 depending on which field is chosen. this creates a new derived part which is a subset of the chosen input part and you do your force calcs on this new part
I have done these processes before and the answer was not correct.
However, the sum of the aerodynamic and hydrodynamic lift forces calculated from the threshold will not be equal to the total lift force calculated from the part region.
I share photos of the settings made.

Last edited by ali_ebrahimi; January 8, 2021 at 09:51.
ali_ebrahimi is offline   Reply With Quote

Old   January 8, 2021, 04:50
Default
  #4
Senior Member
 
Ping
Join Date: Mar 2009
Posts: 556
Rep Power: 20
ping is on a distinguished road
check the threshold parts in a geometry scene to make sure your threshold subsets of those surfaces are correct since it looks to me like you have used .05 instead of 0.5
ali_ebrahimi likes this.
ping is offline   Reply With Quote

Reply

Tags
cfd analysis, high speed planing, lift force, star ccm+

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
How to calculate lift, drag and lift distribution in Star CCM+? israelcasillas94 STAR-CCM+ 4 November 6, 2020 08:35
calculation of Lift problem imran99 FLUENT 0 April 9, 2015 06:37
Aerodynamic Force, analytical calculation punnag Main CFD Forum 0 December 31, 2014 16:45
Calculation of Lift nauman55 FLUENT 1 July 12, 2012 06:54
Warning 097- AB Siemens 6 November 15, 2004 04:41


All times are GMT -4. The time now is 10:57.