Wind Engineers, JAWE
Online ISSN : 1883-8413
Print ISSN : 0912-1935
ISSN-L : 0912-1935
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Volume 1982, Issue 13
Displaying 1-7 of 7 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1982 Volume 1982 Issue 13 Pages 1-2
    Published: July 30, 1982
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1982.1
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1982 Volume 1982 Issue 13 Pages 3-6
    Published: July 30, 1982
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1982.3
    JOURNAL FREE ACCESS
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  • Study on characteristics of a windmill generator system with a battery
    Takayuki SUZUKI, Hiroshi OKITSU
    1982 Volume 1982 Issue 13 Pages 7-14
    Published: July 30, 1982
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1982.7
    JOURNAL FREE ACCESS
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    The increasing importance of fuel saving in the world has been responsible for a revival of interest in so-called “natural energy”and one of the mostexpected future energy is wind power.The wind energy has been studied for possible expanded use as sources of electrical energy.
    The paper deals with the characteristics of a windmill generator system with a battery.The elementary characteristics of the system was studied byanatical and experimental method.The theoretical results agree comparatively well with the experimental results.The effect of wind-speed and batteries on the output power or the transfer function is described.Finally, on this system, a batteryvoltage must be controlled under various wind-speed for the system output to keep the maximum one.
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  • Experimental studies of separated flows around stationary and oscillating rectangular prisms in a uniform flow
    Taketo MIZOTA
    1982 Volume 1982 Issue 13 Pages 15-27
    Published: July 30, 1982
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1982.15
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    Measurements of time-averaged and unsteady two-dimensional velocity distributions are made for stationary and oscillating rectangular prisms using a new technique of a tandem type hot-wire probe. The time-averaged and unsteady streamlines around the models are presented and their correspondence to aerodynamic forces are discussed. The features of the flow patterns around the models which experience galloping oscillation, vortex excitation and low speed instability are described.
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  • Evaluation of Inclination due to Wind Speed Fluctuation for Bridge Deck Instability
    Toshio MIYATA
    1982 Volume 1982 Issue 13 Pages 29-35
    Published: July 30, 1982
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1982.29
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    It is well known that the onset of flutter induced in bridge decks is susceptible to an incident angle of wind.To evaluate the effect of such an inclination on the proposed bridges, a provision of the incident angle range up to±7 degrees is prescribed in the present wind design code for Honshu-Shikoku bridges.In this study, the upper limit of the incident angle range is examined by obtaining the expected value of an excursion time over a level of inclination due to vertical wind speed fluctuation.The result of about ±3 degrees at maximum is concluded to be sufficient to evaluate the aerodynamic instability of bridge decks.
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  • A New Wind Tunnel of Technical Research Laboratory, Takenaka Komuten Co., LTD
    Yoshiteru IWASA, Yoshihiro MATAKI, Yasuzo FUKAO, Noriko CHINO
    1982 Volume 1982 Issue 13 Pages 37-45
    Published: July 30, 1982
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1982.37
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    We have installed a new wind tunnel of closed return type for carrying out our research in wind environment around tall buildings, aerodynamic stability of structures, atmospheric diffusion and design of a ventilation.
    The working section of this wind tunnel is 1.3m m height, 2.0min width and 16m in length. Wind velocity is able to vary from 1m/s to30m/s, and the uniformity of the velocity distribution is within±0.6%.
    The characteristics and performance of the wind tunnel are presented in this paper.
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  • On The Basic Design and Construction of an Industrial Aerodynamics Wind Tunnel
    Kunio FUJII, Hiroshi UEDA, Shigeru SATO
    1982 Volume 1982 Issue 13 Pages 47-66
    Published: July 30, 1982
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1982.47
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    Three types of wind tunnel has been built in the research laboratory of Shimizu Construction Co., Ltd.
    The first type, Eiffel, was built to study the shape of contraction corn in 1974. The second type, a closed-circuit boundary layer wind tunnel, was built to investigate a testing facility for architectural and industrial aerodynamics in 1975.The third type wind tunnel has been built in 1982.This wind tunnel has a wide angle diffuser in front of the contraction corn. This paper describes about the basic design and characteristics of these three different types of wind tunnels.
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