METHRIC-Modelling of Incompressible Turbulent Flows at High Reynolds numbers and Couplings

The objective of the METHRIC group is the numerical modeling of turbulent flows of incompressible viscous fluids around complex geometries under real conditions. This concerns both hydrodynamics and low-speed unsteady aerodynamics within the limit of incompressible fluid assumptions. The group's research provides an understanding of vessel-propulsion interactions under real conditions in order to optimize the energy performance of ships.

In the context of hydrodynamics, the group is interested in any type of propulsion system, ie engine / propeller, sail / wind and human strength/ muscle. Its aim is to use numerical modeling to carry out simulations taking into account the different interactions.

The group's research is organized around 3 topics:

  • Physical modeling: turbulence, cavitation, interface captures
  • Numerical modeling: precision control and high precision order, automatic mesh adaptation, relative motion
  • Couplings: Flow / movement coupling, fluid / structure interaction
> Read more about "METHRIC-Research areas"
Its research tool is numerical simulation, in particular thanks to calculations carried out on national (IDRIS and CINES) and local machines (ECN Intensive Computing Institute).

On a daily basis, the group studies and verifies physical models, develops suitable numerical models and validates these results on the basis of experimental data.  METHRIC research provides results that respond to societal challenges, such as the requirement to reduce pollutant emissions (specifically in maritime and inland waterway transport) or design and optimization in the marine field. Applications also stem from its research in water sports (mainly rowing and sailing) with regard to the requirements of precision and relevance of sports results.
A special development action has also been carried out since 2006 between Centrale Nantes, CNRS and NUMECA International around the FINE / Marine software of the ISIS-CFD integrated calculation code. Applications have resulted from the use of this software, in particular during the last 34th America's Cup and for the 35th (challenges Oracle Team USA, Emirates Team New Zealand and Groupama Team France), Seven King boats Ship of the year 2013) or the Galactica Star (World Super Yacht Award 2014). This action is included in the "Top Ten" of CNRS development projects since 2012.
> Read more about ISIS-CFD software
Published on March 27, 2017 Updated on July 17, 2018