CFD Review  
Serving the CFD Community with News, Articles, and Discussion
CFD Review

User Preferences
Site Sponsorship
Headline Feeds
Mobile Edition
Privacy Policy
Terms of Service

Submit a CFD Story

Site Sponsors
The Choice for CFD Meshing
CFD Review

Tell a Friend
Help this site to grow by sending a friend an invitation to visit this site.

CFD News by Email
Did you know that you can get today's CFD Review headlines mailed to your inbox? Just log in and select Email Headlines Each Night on your User Preferences page.

A Novel Approach to Fluid-Structure Interaction
Posted Wed October 17, 2001 @04:37PM
Print version Email story Tweet story
News CD adapco Group has released EZ-FSI a software tool for analyzing fluid-structure interaction problems. A brochure is available which describes the product and its novel approach to coupling structural analysis with CFD.

Typical fluid-structure interation (FSI) simulations attempt to couple the full structural analysis FEA code with the CFD solver and compute the structural stresses and deformations after each iteration. The approach taken in the EZ_FSI product takes advantage of a lumped-mass model of the solid part to simplify the analysis.

First, the solid part is meshed and the fluid-structure interaction points (the "wetted" points) are identified. The solid part is then analyzed to determine lumped mass, damping, and stiffness values for the wetted points. The lumped system will behave exactly as the full system for linear systems with small deformations.

Next, the fluid portion of the domain is meshed and the fluid structure interaction points are identified as a special moving boundary. As the transient, CFD solution progresses, the pressure on the wetted points is used as a forcing function on the lumped mass system to determine the new location at the current time. The boundary is moved to the new location, the CFD mesh is updated, and the process repeats. This is all done within the CFD solver -- eliminating the need to communicate with an external structural analysis package every iteration.

Finally, after completing the CFD analysis, the transient pressure data can be imported into the structural analysis package to determine dynamic stresses within the solid.

Sponsor CFD Review

[ Post Comment ]

CFDRC to Develop Urban Dispersion Tool | CFX-ProMixus Seminars  >


CFD Review Login
User name:


Create an Account

Related Links
  • brochure
  • CD adapco Group
  • EZ-FSI
  • More on STAR-CD
  • Also by nwyman
  • This discussion has been archived. No new comments can be posted.

    In the first place, God made idiots; this was for practice; then he made school boards. -- Mark Twain All content except comments
    ©2019, Viable Computing.

    [ home | submit story | search | polls | faq | preferences | privacy | terms of service | rss  ]