Wednesday 9
D. High Pressure Plasmas and Applications
Chair: P. Freton, Y. Wu - Each talk is 10'+2' duration
› 12:00 - 12:15 (15min)
› Cabannes
Modeling Nozzle Geometry changes Due to the Ablation in High-Voltage Circuit Breakers
Sina Arabi  1, *, @  , Jean-Yves Trepanier  1, @  , Ricardo Camarero  1, @  , Assen Vassilev  2, @  
1 : Ecole Polytechnique de Montreal  (EPM)  -  Website
2900 boul. Edouard-Montpetit, Campus de l'Universite de Montreal, 2500 chemin de Polytechnique, Department of Mechanical Engineering, Montreal (Qubebec), H3T 1J4 -  Canada
2 : ALSTOM GRID  -  Website
Alstom Grid
130, rue Léon Blum - 69611 Villeurbanne CEDEX -  France
* : Corresponding author

This paper presents a new CFD tool for transient analysis of surface ablation of a Poly-Tetra-Fluro-Ethylene (PTFE) nozzle of a high voltage circuit breaker. The developed solver fully couples the arcing flow field inside a circuit breaker chamber including radiation, ablation and nozzle wall recession. The presented numerical simulation evaluates the changes in the nozzle mass flux due to the recession of the PTFE surface, in 10 consecutive applied current cycles. During the first current cycle, the results were compared with the experimental data.

Subject : : Oral
Comment : A fully transient numerical simulation to model the ablation phenomenon in the high-voltage circuit breakers is provided, implemented and compared with the experimental results.
Topics : D. High Pressure Plasmas and Applications
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