Internal-Shear Mode Instabilities on High-Speed Liquid Jet, (II) : Experimental Analysis of Curved Target Flow

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概要

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• The wave generation on high-speed liquid jets, induced by the instabilities of a laminar shear layer underneath the free surface (the internal-shear mode instabilities), are investigated theoretically and experimentally. Part II analyzes the jet curvature effect on the velocity profile and the surface configuration near the nozzle exit. The initial characteristics of the free-surface shear layer and the relaxation of the shear layer with the distance from the nozzle exit are also analyzed. Based on these results, the stability of the shear layer is analyzed for curved jet geometries simulating high-energy beam targets. The analytical results show that the gravity and the jet curvature have little effect on the stability of the shear layer, and that the shear layer stabilizes quickly with its relaxation. The predicted most-unstable wave numbers are in fair agreement with available experimental data for curved jets of both water and Li. This indicates that the internal-shear mode instabilities are responsible for the experimentally observed waves.

• 社団法人 日本原子力学会の論文
• 2004-08-25

著者

• NAKAMURA Hideo

  Japan Atomic Energy Agency

• KUKITA Yutaka

  Department of Energy Engineering and Science, Nagoya University

• Kukita Yutaka

  Department Of Energy Engineering And Science Nagoya University

• Kukita Y

  Department Of Energy Engineering And Science Nagoya University

• Kukita Yutaka

  Nagoya University

• KUMAMARU Hiroshige

  University of Hyogo, Graduate School of Engineering

• ITOH Kazuhiro

  University of Hyogo, Graduate School of Engineering

• Kumamaru H

  Graduate School Of Engineering University Of Hyogo

• Kumamaru Hiroshige

  University Of Hyogo

• Kumamaru H

  Univ. Hyogo Hyogo

• Itoh Kazuhiro

  Graduate School Of Engineering University Of Hyogo

• Itoh Kazuhiro

  University Of Hyogo Graduate School Of Engineering

• Itoh Kazuhiro

  University Of Hyogo

• Nakamura Hideo

  Nuclear Safety Research Center Japan Atomic Energy Agency

• Nakamura H

  Nuclear Engineering Laboratory Toshiba Corporation

• Nakamura Hideo

  Department Of Nuclear Safety Research Japan Atomic Energy Research Institute

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