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Centre d'Etudes et d'Essais spécialisé en mécanique des fluides


Equipment qualification

The wide variety of test resources at CERG is particularly important for the qualification of sensitive military equipment. Performance and technical sophistication are the ingredients for a successful project.

  • Acoustic discretion testing (measure of pressure fluctuations, noise, vibrations)
  • Long-term endurance testing (5000 hour endurance tests, thermal shocks, cavitation, accelerated testing)
  • Cycling and performance tests (Valve, durability, accelerated ageing tests)

Study and improvement of performance

CERG has been participating in major military programmes and the latest generation of nuclear-powered ballistic missile submarines since the 1970s. Through French Ministry of Defence research programmes, our resources have continued to evolve in order to study new issues of stealth and vulnerability.

  • Hydrodynamics and cavitation studies (water tunnel tests, low NPSH operation, determination of propeller performance, studies on drive units)
  • Hull design (visualisation of flows, improvement of visual pollution, determination of induced stresses)
  • Development of specific equipment (silent hydraulic turbines, staged pressure loss, passive flow regulator

Impact and stealth studies

Water control for air-related problems. Our similitude analysis reduces the cost and duration of our studies.

  • Fume and exhaust reduction studies (representation by similarity, numerical calculations, measurement of density, concentrations and speed)
  • Flow-linked vibration assessment (measurements on the installation, proposals for improvement, determination of vibration sources)
  • Training (a varied catalogue of ready-made and bespoke training courses)