Multiphysics for designers / Products / FINE/FSI-OOFELIE


FINE/FSI-OOFELIE is a fully integrated solution for strongly coupled fluid-structure interaction simulations. It is developed by Open Engineering and Numeca International , combining the latest technology in Multiphysics, Computational Fluid Dynamics and Mechanics design.

FINE/FSI-OOFELIE applications are very important in critical fields, with often high security and reilability risks: Potentially dangerous fluid-structure interactions (FSI) can occur in aircrafts – e.g. wing flutter or buffeting – and wind turbines applications. Other Fluid-Structure Interaction applications are fuel tank sloshing, drop testing of liquid filled containers, detonation wave effects on structures, pressure vessel analysis, fluid interaction with valves and elbows, explosively formed projectile (EFP) analysis, airbag deployment, parachute development, injection molding analysis, wind-force analysis on tall buildings and earthquake response of liquid storage tanks (nuclear waste disposal),

  • No need to learn, validate and match 3 different simulation softwares. Structure Simulation, CFD simulation and MPCCI for passing the information. Instead you can setup and launch the complete simulation using FINE/FSI-OOFELIE and hereby strongly save on setup time and improve reliability
  • Strong coupled Multiphysics and CFD simulations yield faster and more accurate convergence and opens the world of CFD to the entire physics domain. For example the design of Piezo-electric based MEMS for flow characterization

Key Features

Design - Abilities
  • Transient Simulation
  • Steady-state Simulations (equilibrium is obtainedafter a transient phase)
  • Unsteady problems (the structure deformationand the fluid flow are variable in time)
  • Strong Coupling (e.g. Thermal, Pressure)

Watch The Tacoma Narrows Bridge Collapse of 1940

ESA 11th Int. WS on Simulation & EGSE facilities for Space Programmes: Strong Coupling Algorithm to solve Fluid-Structure-Interaction Problems with a Staggered Approach


Strong Multiphysics Coupling

Strong coupling of multipysics phenomena reveals much more information than just consecutive simulations. As an example, the coupling factors can simulate the mutual influence of a wing deformation on the airflow around it. Simulations can combine thermo mechanical stresses inside a structure with pressure and temperature exchange from a surrounding flow.

It ensures fast convergence and solution stability simulating multi-unstable invironments.



Thermodynamic computation in a duct

This second example illustrates the flow in a complex duct with temperature imposed on some parts of the boundary. The structure is deformed due to the fluid flow, and due to the modification of the temperature at the boundary where it is not imposed (dilatation of the duct).
This computation has been made with OOFELIE alone (monolithic equations).

Aerostatic bearing

This example models a jet acting on a bearing. This jet creates a thin layer of air between the bearing and the support. The force acting on the bearing permits to compensate the gravity force.
The figure represents the jet with arrows indicating the direction of the flow. It can be seen that a vortex is created between the bearing and the support. Particles Tracking (coming from the jet) has been used to visualise this vortex.
This application has been solved with OOFELIE coupled with FINE™/Hexa.

Flow around a fixed wind turbine

This example illustrates a thermodynamic flow deforming the blades of a wind turbine. The blades are here supposed fixed and are oriented perpendicular to the inlet flow (the worst configuration). The figures represent the deformation of the blades, the temperature and the velocity of the fluid, as well as the streamlines behind a blade. It can then be seen that two vortices are created behind the blade, and that the fluid goes down.
This application has been solved with OOFELIE coupled with FINE™/Hexa.


This example illustrates a model of a micro-pump actionated by a piezo-electric material on its top part (fluid-piezo-electric computation). The contraction of the structure can make the fluid goes in or out the pump.
This computation has also been made with OOFELIE alone (monolithic equations).

Flow around a moving wind turbine

The same configuration as the previous one has been used but the wind turbine is now moving with a prescribed rotation speed, and the blade are now oriented in the direction of the flow. The figure illustrates the flow field with arrows (the fluid is moving according of the blade movement) and the deformation of the blade (the non-deformed blade is represented in blue).
This application has been solved with OOFELIE coupled with FINE™/Hexa.