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


Specifying Regions in Coupled Fluid-Structural System

Specifying Regions in Coupled Fluid-Structural System

Specifying Regions in Coupled Fluid-Structural System

I'm trying to set up a fairly simple coupled fluid-structural system to learn how it works. My system simply has a flat plate with wind blowing on its face. The plate has a fixed displacement constraint on a small area in its center. Currently, as far as I can tell, everything is set up properly on both the fluid and structural sides. However, when I look at the system coupling setup, there are two things that are concerning to me.

First, there is a question mark beside the "Analysis Settings" with an error message saying "Not all participants and system coupling system have the same analysis type." I am trying to couple a transient structural system to a fluid flow (CFX) system. Is this not possible?

Second, in the regions folder under the fluid flow (CFX) participant, the only region listed is the region containing the side walls of the air volume. It seems like this should be the interface between the flat plate and the air. As it is, the only option for data transfer between the two systems is between these walls and the fluid solid interface defined in the transient structural system. Ultimately, my question is how do I change the region that is sent to the system coupling?

Here is the project schematic I have right now:

Here is the system coupling outline:

I'm sure there's probably some stupid mistake that I'm making. I would greatly appreciate it if someone could tell me what it is.

I tried attaching the file to this post, but apparently it's too large (26.3 MB) for the file sharing system. For now, I've uploaded it to here, but that expires after 2 weeks. If someone knows a better file sharing system that I can access from here at work (most of the common ones are blocked), I'd be happy to upload the file to there.

RE: Specifying Regions in Coupled Fluid-Structural System

Did you try the Static Analysis instead of Transient?


RE: Specifying Regions in Coupled Fluid-Structural System

Hi tlewis3348
The current system coupling component in the latest version of ANSYS Workbench should be able to offer you a generic way to easily couple 2 or more participating force parameters in the Workbench environment.
Specifically, in release 14.0, I think you can link ANSYS Mechanical and Fluent via system coupling to facilitate an accurate simulation of such Fluid structural simulation
Hope it helps :)

Daniel Tan
Your Trusted Engineering Simulation Expert

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!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close