JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN
Online ISSN : 1884-4758
Print ISSN : 0388-3051
ISSN-L : 0388-3051
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Volume 34, Issue 11
Displaying 1-8 of 8 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1999 Volume 34 Issue 11 Pages 709
    Published: November 01, 1999
    Released on J-STAGE: May 31, 2010
    DOIhttps://doi.org/10.5988/jime1966.34.709
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1999 Volume 34 Issue 11 Pages 710-719
    Published: November 01, 1999
    Released on J-STAGE: May 31, 2010
    DOIhttps://doi.org/10.5988/jime1966.34.710
    JOURNAL FREE ACCESS
    Download PDF (4292K)
  • [title in Japanese]
    [in Japanese], [in Japanese]
    1999 Volume 34 Issue 11 Pages 720-731
    Published: November 01, 1999
    Released on J-STAGE: May 31, 2010
    DOIhttps://doi.org/10.5988/jime1966.34.720
    JOURNAL FREE ACCESS
    Download PDF (5545K)
  • [title in Japanese]
    [in Japanese]
    1999 Volume 34 Issue 11 Pages 732-740
    Published: November 01, 1999
    Released on J-STAGE: May 31, 2010
    DOIhttps://doi.org/10.5988/jime1966.34.732
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1999 Volume 34 Issue 11 Pages 741-747
    Published: November 01, 1999
    Released on J-STAGE: May 31, 2010
    DOIhttps://doi.org/10.5988/jime1966.34.741
    JOURNAL FREE ACCESS
    Download PDF (5574K)
  • The Density Current Generator for Artificial Upwelling of Deep Ocean Water
    Kazuyuki Ouchi
    1999 Volume 34 Issue 11 Pages 748-755
    Published: November 01, 1999
    Released on J-STAGE: May 31, 2010
    DOIhttps://doi.org/10.5988/jime1966.34.748
    JOURNAL FREE ACCESS
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    In this paper, we propose the Deep Ocean Water (DOW) Upwelling Machine which is driven by the Ocean Thermal Energy Conversion (OTEC) for the purpose to increase the primary production in the stratified sea area of low latitude, so called “the sea of desert”. In the area, there are very little nutrients in the surface layer of the sea where photosynthesis can be done by phytoplankton. To increase the primary production in the sea area, the machine upwells the nutrient-rich DOW and diffuses it very widely in the layer of sunlight by using a phenomenon of the density current which is driven by the gravity. So that, we can change the sea area from “the sea of desert” into “the sea of very rich fishing ground”. The study of the effect and feasibility of the machine is carried out and it seems very significant.
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  • [title in Japanese]
    Peter H Gee
    1999 Volume 34 Issue 11 Pages 756-763
    Published: November 01, 1999
    Released on J-STAGE: May 31, 2010
    DOIhttps://doi.org/10.5988/jime1966.34.756
    JOURNAL FREE ACCESS
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  • Effect of Engine Specifications on In-Cylinder Flow Field in a Spark-Ignited Natural Gas Engine
    Yukiyoshi Fukano, Kazuo Tachibana, Shigeo Kida, Toshikazu Kadota
    1999 Volume 34 Issue 11 Pages 764-773
    Published: November 01, 1999
    Released on J-STAGE: May 31, 2010
    DOIhttps://doi.org/10.5988/jime1966.34.764
    JOURNAL FREE ACCESS
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    An experimental study was made to investigate the effects of engine specifications on in-cylinder flow field in a spark-ignited natural gas engine. The instantaneous two-dimentional flow field in a single-cylinder visualization engine was measured by using the PTV method over the wide range of piston combustion chamber configuration, top clearance, and nominal swirl ratio. The results showed that swirl is more shifted to the outward radial direction in expansion stroke as piston cavity diameter decreases. In compression stroke, however, the extent of swirl shift is almost constant even if piston cavity diameter varies. Reverse squish is more accelerated than swirl as piston cavity diameter decreases. Smaller piston cavity diameter resulted in larger squish velocity and actual swirl ratio. Top clearance had little effect on flow field. Swirl is more shifted to the outward radial direction in expansion stroke as nominal swirl ratio decreases. Higher nominal swirl ratio resulted in larger actual swirl ratio, while it had little effect on squish velocity.
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