Since its creation LEMMA has been addressing the aeronautics industry by providing numerical solutions using its Fluid Structure Interaction capabilities, the intelligent mesh and optimal design algorithms.
- Turbopump application
- Sonic bang prediction & reduction : goal oriented steady meshing
- High-Fidelity prediction of wing-tip vortices by adjoint mesh adaptation
The aims of the first study presented here were
- to predict the deformed shaped of AGARD wing, under supersonic flow,
- to provide an optimal shape to reduce sonic boom, coupled with aeroelasticity simulations.
The second study presented below consists in predicting reverse thrust effects on induced forced vibrations caused by unsteady flow and large eddies detachments.
LEMMA can also provide powerfull shape optimization tools, based on adjoint optimization technic. Other numerical methods based on genetic and response surface algorithms, coupled to FFD (Free Form Deformation) shape deformation have also been developed.