×
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

Specifying the time-dependence (SW Flow Simulation)

Specifying the time-dependence (SW Flow Simulation)

Specifying the time-dependence (SW Flow Simulation)

(OP)
Hi!
I'm currently working on a project where I'm calculating wing loads in a derrick. Due to the size of my structure and the velocity involved (27 m/s), I have to use the "Time-dependent" option in Wizard. I have a hard time specifying the correct time-dependence values. To be more precise, the "Total analysis time" and the "Output time step". What influence do these values have on my project, and what do they mean?

Thanks!

RE: Specifying the time-dependence (SW Flow Simulation)

Output time step is easy. The software may take many small incremental time steps to solve the problem. You may want to skip a number of those steps in saving output date. So you make the Output time step bigger than the time step increments you are using. It is a judgement call on your part based on disk space requirements.

Total analysis time sounds like the the time over which you wish to calculate a solution. If a gust acts for 60 seconds then maybe you want to look at some multiple of that to capture any vortices that form. Total analysis time probably has nothing to do with how long it will actually take to solve.  

TOP
CSWP, BSSE
www.engtran.com  www.niswug.org
www.linkedin.com/in/engineeringtransport
Phenom IIx6 1100T = 8GB = FX1400 = XP64SP2 = SW2009SP3
"Node news is good news."

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