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Modeling Fluid-Structure Interaction with FLOW-3D
It’s no accident that with FLOW-3D, users can model collision between objects with the General Moving Object (GMO) model. Modeling fluid-structure interactions can include debris flows, opening and closing valves, counter-meshing gears, and big-particle collision. This robust model, the only one of its kind in commercial computational fluid dynamics software, allows users to model rigid body dynamics with six-degrees-of-freedom (6 DOF) fully coupled with fluid flow.
Contact Flow Science to find out how your CFD simulations can be handled with FLOW-3D's GMO model!
Fluid-structure interaction of a prescribed motion in a gear simulation.
Fluid-Structure Interaction Capabilities in FLOW-3D
- Allows up to 500 moving objects, each of which can possess 6 DoF, or rotate about a fixed axis or a fixed point. Other motion constraint patterns are also possible.
- Objects can be fully coupled with fluid flow or the user can prescribe their motion.
- Objects can be made of several materials characterized by their density.
- There is no restriction on complexities of geometry and motion for objects.
- Model collisions and continuous contact between moving and moving/non-moving objects.
- Specified time-dependent forces and torques can be applied to the objects.
- Hydraulic, gravitational, non-inertial and control forces and torques can be calculated.
- Full post-processing capabilities, including visual and numerical output.
What is a General Moving Object (GMO)?
A GMO is a rigid body in a FLOW-3D simulation that is intended to move or be moved by fluid. GMOs can have any type of user-prescribed motion, or the GMO can be dynamically coupled with the fluid flow.
Fluid-Structure Interaction Simulation Examples
Several fluid-structure interaction animations using the GMO model, with and without collision, are displayed on the Simulation Examples page. You can watch more fluid-structure interaction simulations on the FLOW-3D Fun Page.
Application-Specific Fluid-Structure Interaction
Specific uses of FLOW-3D's GMO model for various industries can be found in the application pages of the website.
- Casting-modeling shot sleeves and ladle pours
- Water & Environmental-modeling logs in spillways and waterwheels
- Inkjets-modeling moving printheads
- Maritime-modeling mooring ships, tug boats and ship launches