×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Where are the values of the Fluid Properties?

Where are the values of the Fluid Properties?

Where are the values of the Fluid Properties?

(OP)
Hello everybody!

I want to compute one CFD-Problem with Ansys and  StarCD to compare the results. So i have to know, what the Fluid Properties of AIR-SI in ansys are or where i can change them. Both programs must use the same values for i.e. density or viscosity.

The Help-function of ansys makes me dizzy.

Thanks in advance,
Georg Seewald

RE: Where are the values of the Fluid Properties?

Accoding to Flotran Laminar analysis of air the following numbers/units are used for air;

Air density: 1.205 kg/m3
Air viscosity: 1.8135e-5 kg/m-s

They can be changed in:

Solution>Flotran setup>Fluid Properties>
okay for all constant then change density and viscosity

RE: Where are the values of the Fluid Properties?

(OP)
Thanks a lot!

RE: Where are the values of the Fluid Properties?

just in case:

be aware that IF properties are set to vary with temperature (e.g. with thermal solution activated besides flow solution - for observation of heat transfer from/to walls and supersonic flows) FLOTRAN uttilizes variable properties as a function of the temperature for actual viscosity, density. In addition if compressibel solution is activated too, actual pressure influence on properties is considered too, i.e. in these cases properties taken from AIR-SI are not constant. Similar should apply with evtl StarCD property database values

Cheers, Frank
IFE BONN Germany
www.ife.subito.cc

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources