LA SIMULATION NUMERIQUE AU SERVICE DE LA MAITRISE DU COMPORTEMENT CLIMATIQUE DES OUVRAGES ET DES ESPACES URBAINS

About us

Created in 1998 by young researchers in fluid mechanics, OPTIFLOW is:
A scientific culture and advanced technologies

A technical team composed of high experienced engineers and Phd’s owner having a thorough knowledge of the modeling tools and a broad expertise of the physics of the considered phenomena.

Robust and accurate modeling tools adapted to the problems addressed and to the kind of results expected.

Our large computational facility allows us to have a great reactivity without sacrificing on the quality of the simulations.

A network of Experts (study offices, academics …) in areas of building physics complementary to our area of expertise.

Improvment and optimization of our services through ongoing research and development and scientific monitoring activities in collaboration with famous research institutes

… for services adapted to our customers

Integration of the constraints, needs and environments specific to the activity of our customers.

Standards and Codes specific to the various problems dealt with.

Involvement of the project actors, at all stages of our services (contractor, architects, study offices …).

Directly useful adapted results to the needs and tools of our customers and support in their interpretation and analysis.

Our areas of expertise

Wind Engineering

20 years of experience in the field of wind engineering and buildings ventilation

Scientific Data Analysis

Flow physics interpretation for architectural project designers

Mathematical Modeling

Mathematical formulation of complex aeraulic phenomena and their interactions

Building Physics

Strong knowledge of the different heat exchange modes and their mathematical models

HPC Computation

HPC platform specially designed for CFD simulations

3D Modeling

Detailed 3D model construction from the data provided by our customers (from floor plan to 3D models coming from different tools ...)

Advantages of the CFD approach

Computational fluid dynamics (CFD)  uses numerical analysis  to solve and analyze problems that involve fluid flows in specific environments.

The whole of the phenomena related to fluid movements is governed by a system of partial differential equations called “Navier-Stokes equations”, unsolved in a mathematical general way . There are, however, numerical methods for evaluating, in an approximate way, the value of their solutions at points defined in a given volume and under fixed conditions.

While it has become much more democratized in recent years, it can not, unlike the speech often held by software publishers, be used as black box tool. It is imperative to keep in mind that it remains a scientific tool and must therefore be considered with all the rigour required to achieve representative results of a physical reality.

Using CFD to compute the air flows around and within built structures, and even more specifically to the determination of wind loads, is particularly complex. It requires a deep knowledge of the physics of the phenomena  (thermal transfer, randomness and highly turbulent wind …), specific developments (wind generation, aeraulic/thermal coupling, dedicated postProcessing …) But also extremely important computing means (several days of computation on a cluster of several hundred cores are required for some simulation).

With an experience of more than 20 years, a strong knowledge of the physical phenomena to be studied and the mathematical methods to be used to reproduce them, a permanent scientific watch through participation in research programs,  OPTIFLOW is today  a recognized company for its expertise in the application of CFD for  architecture and urban areas.

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