水中への高圧ガス噴出時における不足膨張ジェット挙動の研究

Study on high pressure gas jet into water under the underexpanded condition

佐藤 博之; 西村 正弘 ; 木村 暢之; 上出 英樹 

Sato, Hiroyuki; Nishimura, Masahiro; Kimura, Nobuyuki; Kamide, Hideki

ナトリウム高速炉における蒸気発生器(SG)伝熱管破損時の水蒸気噴出挙動解明のために、模擬試験装置を製作した。水中に噴出する高圧空気ジェットの流路を可動する平板で挟んで内部構造を可視化し、平板間隔の不足膨張ジェットへの影響を把握した。

It is important to investigate steam jet behavior when the heat exchanger tube is broken in the steam generator (SG) of the sodium fast reactor. Test equipment was made to visualize internal constitution of the high-pressure air jet into liquid. The gas-liquid interface of jet was removed by sandwiching the jet between two flat acryl plates, and then the influence of injected pressure and clearance between two plates are investigated over the under-expansion jet.