舶用ディーゼルノズルの噴霧特性と内部流れに関する研究

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タイトル別名
  • Study on Internal Flow and Spray Characteristics of a Marine Diesel Nozzle
  • ハクヨウ ディーゼルノズル ノ フンム トクセイ ト ナイブ ナガレ ニ カンスル ケンキュウ

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抄録

<p>Spray characteristic and internal flow of a marine diesel nozzle were investigated both numerically and experimentally. In this paper, both investigations were carried out using water instead of fuel. Numerical simulation of nozzle internal flow of the nozzle showed that cavitation can occur inside the nozzle holes. </p><p>In spray visualization experiments, it was observed that penetrations of the sprays in the early stages of injection gradually increased due to an effect of large sac volume. This phenomenon is quite different from that of a small automobile diesel nozzle. Internal flow visualization was also carried out and the appearance of cavitation inside the nozzle holes was consistent with numerical simulation results.</p>

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