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Fluid Dynamics

Fluid Dynamics

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  • 1 New tools for numerical simulations

    This first aerodynamic-aero-acoustic chaining, created with an exchange surface crossed by a turbulent flow, opens the way to future complete aero-acoustic computations for configurations that are today impossible using non- coupled CFD(* Computational Fluid Dynamics) and CAA:* see below. CFD- Computational Fluid Dynamics
  • 2 ONERA, a world-class leader in CFD

    Computational Fluid Dynamics* unsteady: that varies over time. Aghora- ONERA M6 wing -RANS kw (k-omega) transonic calculation
  • 3 Take-Off at the Martel Test Bench

    "Up to now we have had no other way of characterizing this shock wave than by firing up reduced scale thrusters", says Denis Gély, head of" the Aeroacoustic" research unit in Onera's Computational Fluid Dynamics and Aeroacoustic Department. But, when we perform tests at reduced scale, we can not simulate the time scales related to the intrinsic characteristics of the solid fuel in combustion and it is difficult to play with the time of pressure increase
  • 4 Simulation of the noise of landing gear through CFD*

    Computational Fluid Dynamics. ou Simulation numérique des écoulements
  • 5 Combining Scale Models for the Best... in the Best Way

    "There are two main approaches to taking turbulence into account: statistical calculations and direct calculations", explains Ivan Mary, researcher in the Computational Fluid Dynamics and Aeroacoustics Department at Onera. In statistical methods, the average values for flow and the overall intensity of the fluctuations are calculated without including any information on the frequency with which they happen
  • 6 ONERA-M6 Wing, Star of CFD

    1 CFD= Computational Fluid Dynamics. 2 AGARD
  • 7 Model Pressure Measurement

    Pressure measurement is one of the fundamental measurements in fluid dynamics experiments. Different tools and devices are available to access at the local pressure level on / around a model
  • 8 The droplet and the engine

    Laser techniques are used to measure the dynamics of the whole process.[Photo Antoine Gonin... It is a complex phenomenon, occurring where several disciplines meet- aerothermics, fluid mechanics, chemistry, mass and heat transfer, etc... Digital simulation of the dynamics of the evaporation of a droplet in a jet of mono-dispersed droplets
  • 9 1963 à 1983 - The expansion

    ONERA, which was already a centre of reference in its field, would play a leading role in the dynamics of this period... At that time, thanks to prominent experimenter Henry Werlé, the hydrodynamic simulation tunnel proved to be an excellent research tool for addressing fluid mechanics problems in the incompressible domain, by providing stunning visualizations of flows around models
  • 10 Scientific High Council

    Professor, Head of the Turbomachinery and Propulsion Department Von Karman Institute for Fluid Dynamics, Belgium. Hélène Bouchiat