EPSYL is a company of the ALCEN group, meeting various needs in systems design and optimization for large industrial sectors (Nuclear, Aeronautics, Transport). EPSILON conducts studies for its customers and for its own products and undertakes complex projects in design and implementation with the support and industrial power of the ALCEN group. By combining its specialist skills in multi-physics modeling/simulation and its deep understanding of systems, EPSILON can drastically shorten the time between the upstream phases of projects and downstream validation tests. EPSILON has chosen to focus on multi-physics questions combining thermal, fluidic and mechanical issues. In this respect, EPSILON wishes to strengthen its thermal engineering department. The company is now organized in three skill centers: EPSILON PHYSICS: Dedicated to scientific calculations, in particular Thermal, Mechanical and Fluidic calculations EPSILON IT: Dedicated to industrial IT EPSILON SYSTEM: Dedicated to testing and systems integration