An investigation on the oscillation modes of the rectangular jet.

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  • 長方形噴流の発振モードに関する研究
  • チョウホウケイ フンリュウ ノ ハッシン モード ニ カンスル ケンキュウ

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Abstract

The structure on oscillation modes I, II, III of the rectangular jet has been investigated using the color tracer injection method. It was found that the wave-form of mode I has two nodes and one loop, the wave-form of mode II has four nodes and three loops, and the wave-form of mode III has six nodes and five loops. The amplitude of mode I increases with the splitter distance, while the amplitude is a constant regardless of the Reynolds number. In addition, comparison of the oscillation characteristic due to the difference of the velocity distribution at the nozzle exit and the difference of the splitter shape has been investigated.

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