Cerfacs Enter the world of high performance ...

HPC simulation of aerodynamics & aeroacoustic

The next generation of commercial aircraft will require an efficient design loop on which unsteady aerodynamics is heavily involved: these include aerodynamics and aeroacoustics on fixed and mobile surfaces such as landing gear, high-lift system, FAN, compressor, turbine, wind turbine and open-rotor. CERFACS proposed to reach this objective by means of high-fidelity CFD methods (based on Large Eddy Simulation -LES- approach), which represents a breakthrough compared to industrial standards, which are based on the steady or unsteady Reynolds-Averaged Navier Stokes (RANS) turbulence modelling. To make the use of LES in industry attractive, a lot of effort have to be done to reduce the CPU cost. Efforts must be made in different directions: numerical discretization (to get the best accuracy for a given CPU time), mesh generation, turbulence modelling, co-processing and HPC efficiency on different platforms (CPU and GPU).

Among all possible CFD approaches, CERFACS is involved in two promissing ones: Lattice Boltzmann Method (LBM) and high-order discontinuous approach such as Spectral Difference Method (SDM). CERFACS believe that these approaches have a great potential to dramatically reduce the simulation cost compared to traditional CFD formalisms. In this respect, comparisons are made with the standard CFD solvers available at CERFACS.

Here is an example of an aeroacoustic simulation around a full aircraft using an LBM approach. The use of Cartesian grid with immersed boundary method makes the use of LBM the most promising approach in term of restitution time for LES simulations.

CALENDAR

Monday

04

December

2023

Artificial Intelligence for computational physics

From Monday 4 December 2023 to Friday 8 December 2023

  Training    

Monday

11

December

2023

Multi-architecture parallelism using Kokkos/C++ library

From Monday 11 December 2023 at 14h00 to Wednesday 13 December 2023 at 17h00

  Training    

Tuesday

26

March

2024

ALL EVENTS