Journal of Japan Society of Fluid Mechanics

Online ISSN : 2185-4912
Print ISSN : 0286-3154
ISSN-L : 0286-3154

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Volume 21, Issue 5

Displaying 1-9 of 9 articles from this issue

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[title in Japanese]

[in Japanese]

2002 Volume 21 Issue 5 Pages 389-390
Published: October 25, 2002
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.21.389

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Wind Tunnel Experiments

[in Japanese], [in Japanese]

2002 Volume 21 Issue 5 Pages 393
Published: October 25, 2002
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.21.393

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Low Noise Wind Tunnel

Hajime FUJITA

2002 Volume 21 Issue 5 Pages 394-399
Published: October 25, 2002
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.21.394

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Supersonic wind tunnel

Shohei TAKAGI

2002 Volume 21 Issue 5 Pages 400-408
Published: October 25, 2002
Released on J-STAGE: August 16, 2011

DOIhttps://doi.org/10.11426/nagare1982.21.400

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Turbulence Wind Tunnel

Hideharu MAKITA

2002 Volume 21 Issue 5 Pages 409-418
Published: October 25, 2002
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.21.409

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Flows in Microdevices

Yoshihiro NAGAOKA

2002 Volume 21 Issue 5 Pages 419-428
Published: October 25, 2002
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.21.419

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Numerical Wind Tunnel

Kiyoshi YAMAMOTO

2002 Volume 21 Issue 5 Pages 429-436
Published: October 25, 2002
Released on J-STAGE: August 16, 2011

DOIhttps://doi.org/10.11426/nagare1982.21.429

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Thermally Stratified Wind Tunnel

Yuji OHYA

2002 Volume 21 Issue 5 Pages 437-446
Published: October 25, 2002
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.21.437

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Intermittent Entrainment of Bubbles and Sound Generation due to a Steady Plunging Film Flow

Atsushi SASAKI, Osamu MOCHIZUKI, Hitoshi ISHIKAWA

2002 Volume 21 Issue 5 Pages 447-454
Published: October 25, 2002
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.21.447

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This paper is concerned with the mechanism of sound generation from bubbles, which are entrained by a steady water film flow plunging into a still water surface. It is clarified that the bubbles are entrained intermittently by the steady plunging flow and that their entrainment is governed by velocity fluctuations of the flow. The amplitude of sound pressure generated by bubbles attains a maximum just after the entrainment, and the sound source is bubbles situated in the neighborhood of the water surface. The number of entrained bubbles and the sound pressure increase in a turbulent state compared to a laminar one with the same mean velocity.

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