modeling | EIF-Services

By eifed , 4 May, 2026

FreeCAD/FEM

FreeCAD is now the main 3D modeling tool at EIF-services.

But FreeCAD also offers to manage numerical simulations through various external tools that will work on the 3D geometries defined with FreeCAD; it also offers a visualization of the results !

To begin with, we engaged in a material resistance exercise, of which you will find a report there.

Then we will explore various possibilities in fluid mechanics:

I-beam

Here is an application from the FreeCAD FEM workshop: an I-beam supported at both ends is subject to its weight as well as a center load of 1000 kg.

The beams considered here all have a length L of 5 m but various profiles: IPE100, IPE200 or IPE400 (this European nomenclature contains the height H of the beam, in mm; three other geometric parameters are necessary to define an IPE profile).

Multi-core scaling

We are interested here in the first step of the parallelization of an OpenFoam simulation, which consists in using several cores on a single processor. For this purpose, OpenFoam does not use OpenMP (although dedicated to multi-core) but indeed MPI (as for the multi-processor parallelization of a cluster).

By eifed , 23 February, 2025

HPC on AWS

EIF-Services is currently investigating various ways to set up an AWS cluster.

A first experiment based on ParallelCluster (launched in 2018) led to an issue already noticed elsewhere.

Ubuntu4aws

Automating the deployment of calculations on a platform such as AWS is an important issue in order to increase the productivity of Computational Fluid Dynamics (CFD) studies. Indeed a company should charge for the time spent developing the model and not not while performing command line sessions, which are difficult to remember when they are not practiced on a daily basis.

By eifed , 4 January, 2025

AWS for CFD

EIF-services is currently investigating HPC on AWS.

By eifed , 3 November, 2023

From Ciaran to Carmen

The recent passage of storm Ciaran broke several wind records in Brittany (it was in the night of Wednesday 1st to Thursday 2nd, November 2023). This reminded us of an earlier study about storm Carmen, re-published here.
The next step will be for EIF-services to develop high-performance computing capabilities, presumably in the cloud using AWS for example.

Flying henhouse

Here is an application of Basilisk based on a funny news item: a large henhouse took off on January 1^st 2018 during the Carmen storm, which blew at more than 100 km/h in Brittany (inland). The henhouse (and the chicken!) landed on a four-lane highway:

Hydraulic network

Here is an example of a hydraulic study carried out by EIF-services. A few days work allowed to reach relevant results without resorting to high performance computing.

modeling