Revision as of 04:39, 28 January 2022

Description

ECFD5 workshop logo.

• Event from 23th to 28th of January 2022
• Location: Centre Bonséjour, Merville-Franceville, near Caen (14)
• Two types of sessions:
  • common technical presentations: roadmaps, specific points.
  • mini-workshops. Potential workshops are listed below.
• Free of charge
• More than 50 participants from academics (CERFACS, CORIA, IMAG, LEGI, EM2C, UMONS, UVM, VUB, UCL, TUDelft), HPC center/experts (GENCI, AMD, CINES, CRIANN) and industry (Safran, Ariane Group, Siemens-Gamesa).

• Objectives
  • Bring together experts in high-performance computing, applied mathematics and multi-physics CFDs
  • Identify the technological barriers of exaflopic CFD via numerical experiments
  • Identify industrial needs and challenges in high-performance computing
  • Propose action plans to add to the development roadmaps of the CFD codes

News

• 03/11/2021: First announcement of the 5th Extreme CFD Workshop & Hackathon !

• 13/01/2022: After discussions with the participants, the 5th Extreme CFD Workshop & Hackathon is maintained as an in-person event! It will be also possible to attend to the plenary sessions and participate remotely to the workshop.

• 14/01/2022: The ECFD5 program is online! The plenary sessions will be announced soon!

• 20/01/2022: The plenary sessions are now defined:
  • P1 - 24/01/2022: GPU porting challenges and quantum computing, présentation machine Adastra by G. Staffelbach (CERFACS) + Presentation of the new cluster from CINES called Adastra by C. Andrieu (CINES)
  • P2 - 25/01/2022: News, perspectives and future of GPU computing applied to CFD by A. Toure (AMD)
  • P3 - 26/01/2022: Theory, applications and perspectives of the Lattice-Boltzmann Method by P. Boivin (M2P2)
  • P4 - 27/01/2022: Concepts and notions of mesh adaptation by C. Dapogny (LJK)

• 23/04/2022: The ECFD5 event has now started !! LinkedIn post

Agenda

Thematics / Mini-workshops

These mini-workshops may change and cover more or less topics. This page will be adapted according to your feedback.

Combustion - K. Bioche, VUB

Static and dynamic mesh adaptation - G. Balarac, LEGI

Multi-phase flows - M. Cailler, SAFRAN TECH

D3: convergence of the interface curvature computation. The computation of interface curvature in a levelset framework is based on the classic formula as divergence of the gradient of the levelset function. This function being computed at 2nd order, one obtains a O(0) curvature, meaning that the error does not decrease with mesh refinement. We have implemented in YALES2 a strategy proposed by Emmanuel Maître and collaborators in a finite element method based on the regularization (filtering) of the levelset gradient and curvature. This strategy has been tested for the simple test case of a static circular interface. We used two types of filters (simple gather-scatter or bilaplacian as developed by Lola Guedot (PhD thesis 2015)) on different mesh types (split quadrilaterals, isotropic triangular mesh, unstructured triangular mesh). The results are encouraging since a O(1) convergence is obtained in all cases. Further work is needed to tune the filter properties (amplitude and size) for different spatial resolutions and levelset "narrow band" width.

Numerics - G. Lartigue, CORIA

Turbulent flows - P. Bénard, CORIA

• Sub-project 1: Optimization of the actuator set for several wind turbines in YALES2 (F. Houtin Mongrolle, S. Gremmo, E. Muller & B. Duboc)

• Sub-project 6: Tools for rough wall modelling (A. Barge, S. Meynet)

Compressible - L. Bricteux, UMONS

User experience - J. Leparoux, SAFRAN TECH

Hackathon - G. Staffelbach, CERFACS