Simulation des Grandes Échelles d'un écoulement d'air turbulent pour le refroidissement d'amplificateurs de lasers

Abstract : The French collaborative Trio4CLF project aims to understand and control the cryogenic cooling of amplifiers for high power (~1 PetaWatt) and high repetition rate (1-10 Hertz) lasers. In such amplifiers, the fluid evacuates the thermal power absorbed by the solid amplifying plates. A precise knowledge of the heat exchange and thus of the turbulent fluid flow in the amplifier is requested to evaluate its impact on the laser beam quality. As a first step, a Large Eddy Simulation is carried out in air without heating to study the development of the turbulent flow. The CFD code used is TrioCFD, a code developed by the CEA. For validation purpose, the simulation is carried out in the experimental setup configuration: a closed-loop wind tunnel called TRANSAT. Two horizontal plates, separated by 0.05 m, are put in the airflow to represent the amplifier plates. Turbulent boundary layers develop from the plates edges. Numerically, the entrance flow is a homogeneous planar flow with a constant velocity at 10 m/s. The results of this Large Eddy Simulation are presented in this paper as a study of the development of the turbulent boundary layers created by the plates.
Complete list of metadatas

Cited literature [11 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02281382
Contributor : Morgane Bellec <>
Submitted on : Monday, September 9, 2019 - 10:26:39 AM
Last modification on : Friday, September 13, 2019 - 1:23:46 AM

File

ArticleCFM_BellecM_final.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-02281382, version 1

Citation

Morgane Bellec, Ulrich Bieder, Nicolas Luchier, Jean-Paul Moro, Alain Girard, et al.. Simulation des Grandes Échelles d'un écoulement d'air turbulent pour le refroidissement d'amplificateurs de lasers. 24ème Congrès Français de Mécanique, Aug 2019, Brest, France. ⟨hal-02281382⟩

Share

Metrics

Record views

7

Files downloads

2