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

add decimals to coefficients of the polynomial function in a material property Fluent

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

Like Tree1Likes
  • 1 Post By Josue Fraire

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 21, 2014, 14:38
Question add decimals to coefficients of the polynomial function in a material property Fluent
  #1
New Member
 
Josue Fraire
Join Date: Mar 2013
Location: Monterrey, Mexico
Posts: 3
Rep Power: 11
Josue Fraire is on a distinguished road
I'm working with oil so dynamic viscosity is too low and the polynomial regression for this property use to have coefficients with more than 12 decimals in order to have a pretty low error in the viscosity calculation, so I set the material properties and enter the coefficients for the function and I save changes, but when I go back to the material property I realize it changes to 6 decimals.

what can I do to keep more decimals for the coefficients?

By the way, I'm using double precision simulation

Thanks
lazregenset likes this.
Josue Fraire is offline   Reply With Quote

Old   August 4, 2014, 07:05
Default halp
  #2
New Member
 
lazreg
Join Date: Jul 2014
Posts: 9
Rep Power: 9
lazregenset is on a distinguished road
Quote:
Originally Posted by Josue Fraire View Post
I'm working with oil so dynamic viscosity is too low and the polynomial regression for this property use to have coefficients with more than 12 decimals in order to have a pretty low error in the viscosity calculation, so I set the material properties and enter the coefficients for the function and I save changes, but when I go back to the material property I realize it changes to 6 decimals.

what can I do to keep more decimals for the coefficients?

By the way, I'm using double precision simulation

Thanks

im so soory bat im in the big pb.halp me .how to calcule 103.1006 and -1.202039
in other face how to calcul A1A2....
donner moi impeu detailler s.t.p
lazregenset is offline   Reply With Quote

Old   August 4, 2014, 10:37
Default
  #3
Senior Member
 
François Grégoire
Join Date: Jan 2010
Location: Canada
Posts: 392
Rep Power: 15
macfly is on a distinguished road
Josue:
Materials... Create/Edit... User-Defined Database... Copy Materials From Case... then save the database file (.scm) somewhere.
Open the database file in notepad and you will see the actual number of decimals of the polynomial coefficients.

lazregenset:
macfly is offline   Reply With Quote

Old   August 4, 2014, 13:49
Default
  #4
New Member
 
lazreg
Join Date: Jul 2014
Posts: 9
Rep Power: 9
lazregenset is on a distinguished road
Quote:
Originally Posted by macfly View Post
Josue:
Materials... Create/Edit... User-Defined Database... Copy Materials From Case... then save the database file (.scm) somewhere.
Open the database file in notepad and you will see the actual number of decimals of the polynomial coefficients.

lazregenset:



thanks thank you verri match
lazregenset is offline   Reply With Quote

Old   August 4, 2014, 14:03
Default thanks again
  #5
New Member
 
lazreg
Join Date: Jul 2014
Posts: 9
Rep Power: 9
lazregenset is on a distinguished road
Quote:
Originally Posted by macfly View Post
Josue:
Materials... Create/Edit... User-Defined Database... Copy Materials From Case... then save the database file (.scm) somewhere.
Open the database file in notepad and you will see the actual number of decimals of the polynomial coefficients.

lazregenset:


thanks again i'm very happy for him find people like you in my life thanks again
lazregenset is offline   Reply With Quote

Old   October 2, 2014, 10:15
Default
  #6
New Member
 
Josue Fraire
Join Date: Mar 2013
Location: Monterrey, Mexico
Posts: 3
Rep Power: 11
Josue Fraire is on a distinguished road
I have already done that, but I realized that even if I add all necessary decimals for my regression in the notepad file, as soon as I open the property manager in fluent, the amount of decimals will be decreased.

the max amount of decimals is 8, and I need 12
Josue Fraire is offline   Reply With Quote

Reply

Tags
decimals, fluent, polynomial, properties, viscosity

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
looking for a smart interface matlab fluent chary FLUENT 24 June 18, 2021 09:07
foamToTecplot360 thomasduerr OpenFOAM Post-Processing 121 June 11, 2021 10:05
[PyFoam] and paraview eelcovv OpenFOAM Community Contributions 28 May 30, 2016 09:23
error message cuteapathy CFX 14 March 20, 2012 06:45
Constant velocity of the material Sas CFX 15 July 13, 2010 08:56


All times are GMT -4. The time now is 10:03.