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Numerical validation of AQUA-SF in SNL T3 sodium spray fire experiment

Sonehara, Masateru ; Aoyagi, Mitsuhiro ; Uchibori, Akihiro ; Takata, Takashi ; Ohshima, Hiroyuki; Clark, A. J.*; Louie, D. L. Y.*

In order to investigate the multi-dimensional effects of sodium combustion, a benchmark analysis of the SNL Surtsey spray combustion experiment (SNL T3 experiments) using AQUA-SF and SPHINCS is conducted in JAEA. As a best estimate analysis, the spray burning duration is adjusted in the computation in order to take into account the temporary suppression of the spray combustion observed in the experiment. Furthermore, droplet size of SPHINCS and AQUA-SF are optimized to represent the T3 experimental results. The best estimate of AQUA-SF results in the droplet diameter of 2.5 mm, which agrees quite well with the spatial temperature measurements, and the sodium droplet diameter measurement with a high speed camera.

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