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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/52488

    Title: 小型風車流場數值模擬與效能分析
    Other Titles: The flow field simulation and performance analysis of small wind turbines
    Authors: 許朔甄;Hsu, Shuo-chen
    Contributors: 淡江大學航空太空工程學系碩士班
    陳慶祥;Chen, Ching-shung
    Keywords: CFD;小型風力機;FLUENT;翼尖小翼;CFD;Small wind turbine;FLUENT;Winglet
    Date: 2010
    Issue Date: 2010-09-23 17:51:04 (UTC+8)
    Abstract: 本文以數值模擬小型風力發電機風車之流場分析與空氣動力特性,並使用計算流體力學套裝軟體FLUENT 6.3.26版求解Navier-Stokes方程式。網格系統為非結構性網格,並以葉片周圍轉動網格模擬風車葉片轉動之情形。
    This thesis investigated the flow field and performance of small wind turbines. A CFD software package, FLUENT, was used to solve the Navier-Stokes equations to obtain the flow field. The numerical results were compared with experimental data.
    Two airfoils, NACA-2415 and NACA-4415, were used to manufacture the turbine blades. The effects of several parameters which might affect the performance of wind turbines were studied. They were blade attack angle, blade span, inlet velocity, airfoil shape, and winglet.
    Several conclusions can be drawn from the comparison of numerical and experimental results. First, the comparison of power coefficient is very close when the tip speed ratio is smaller than 7. The agreement is not good at larger tip speed ratios. The reasons need to be further investigated. Second, the power coefficient is higher for larger inlet velocities.
    Third, increasing the blade span enhances the power coefficient. Fourth, NACA-4415 has a better power coefficient than that of NACA-2415 due to its higher lift coefficient. Fifth, the installation of winglet can increase the power coefficient a little, the effect is not strong.
    Appears in Collections:[航空太空工程學系暨研究所] 學位論文

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