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    油壓管路에서 非定常 壓力의 周波數 特性

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    https://www.riss.kr/link?id=T8938663

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    다국어 초록 (Multilingual Abstract) kakao i 다국어 번역

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    An efficient wave equation is analyzed for determining a wave equation taking into account viscosity and radial velocity and a water hammer equation. Both frequency and transient response experiments are carried out with use of a rotary sinusoidal flow generator.
    A viscous wave equation is analyzed for making investigation into frequency-dependent friction in transient laminar liquid flow by the method of characteristics. The procedure consists of determining an approximate expression for frequency-dependent friction. Theoretical results for a test system are compared with the experimental results so show that the approximate expression predicts accurately the surge pressures, pressure wave distortion as well as attenuation of pressure pulses in hydraulic lines. The theoretical method used here makes it possible to experimentally investigate transient flows in a pipe with a circular orifice. The transient variations of flow rate are measured by a modified impedance tube method which is realized by virtue of the present analytical technique.

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    An efficient wave equation is analyzed for determining a wave equation taking into account viscosity and radial velocity and a water hammer equation. Both frequency and transient response experiments are carried out with use of a rotary sinusoidal flo...

    An efficient wave equation is analyzed for determining a wave equation taking into account viscosity and radial velocity and a water hammer equation. Both frequency and transient response experiments are carried out with use of a rotary sinusoidal flow generator.
    A viscous wave equation is analyzed for making investigation into frequency-dependent friction in transient laminar liquid flow by the method of characteristics. The procedure consists of determining an approximate expression for frequency-dependent friction. Theoretical results for a test system are compared with the experimental results so show that the approximate expression predicts accurately the surge pressures, pressure wave distortion as well as attenuation of pressure pulses in hydraulic lines. The theoretical method used here makes it possible to experimentally investigate transient flows in a pipe with a circular orifice. The transient variations of flow rate are measured by a modified impedance tube method which is realized by virtue of the present analytical technique.

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    목차 (Table of Contents)

    • 목차
    • List of Figures = ii
    • List of Photographs = iii
    • Nomenclatures = iv
    • Abstract = vi
    • 목차
    • List of Figures = ii
    • List of Photographs = iii
    • Nomenclatures = iv
    • Abstract = vi
    • I. 緖論 = 1
    • I-1. 硏究의 背景및 動向 = 1
    • I-2. 硏究의 目的및 內容 = 3
    • II. 理論解析 = 1
    • III. 實驗 = 11
    • III-1. 實驗方法 = 11
    • III-2. 實驗 및 測定裝置 = 13
    • III-2-1. System Analyzer = 13
    • III-2-2. Basic System = 13
    • III-2-3. Ulltrasonic Flowmeter = 14
    • III-2-4. Oscilloscope = 16
    • III-2-5. Pressure transducer = 17
    • IV. 結果 및 考察 = 26
    • V. 結論 = 39
    • References = 41
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