In a high competitive industrial context, the experimental tests, even at reduced scale, are costly and time consuming for a project : breadboards realisation, tests equipment availability, tests duration and results analysis. Willing to provide efficient innovating solutions within a cost reduction approach, LEMMA has developped the numerical basin concept with its combined expertises in numerical simulation and hydrodynamics.
LEMMA has developed new numerical methods, faster and more accurate, implemented with parallel algorithms in the CFD software ANANAS®, which simulates the real turbulent flow of vessels behavior or oil platforms (floating structures).
The numerical performances of the numerical basin enable to seize the reality of physical phenomenon at scale 1. We now are able to
- generate any type of wave : monochromatic, bi-chromatic, regular wave, regular wave packet, irregular waves , within any number of oscillating flaps or spectral methods. Linear or non linear approach considered to generate waves is coupled to LES-VMS models and allows us to perform very accurate simulations, up to order 6 in space (see example below untitled “Numerical investigation of thermally stratified wake“).
- take into account current and wind without velocity limitation
- modelise anchors (linear and non linear) linked to floatting bodies
- study sea-keeping and manoeuvrability
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