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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/102641

    Title: 阻力型垂直軸風機流場之數值模擬
    Other Titles: Numerical simulation of the flow field of drag type vertical-axis wind turbines
    Authors: 陳思瑜;Chen, Szu-Yu
    Contributors: 淡江大學航空太空工程學系碩士班
    Keywords: 阻力型垂直軸風車;風力發電;Drag type vertical-axis wind turbines;FLUENT;wind power generation
    Date: 2014
    Issue Date: 2015-05-04 10:00:49 (UTC+8)
    Abstract: 本研究利用FLUENT計算流力軟體來模擬阻力型垂直軸風車之流場,求解二維非穩態不可壓縮紊流的Navier-Stokes方程式,並與實驗數據進行比對。
    This study used the commercial CFD software, FLUENT, to simulate the flow field of drag type VAWTs and compare the numerical results with the experimental data. The governing equations are the two-dimensional, unsteady, incompressible, turbulent Navier-Stokes equations.
    This work were divided into three parts. Part 1 simulated the flow passing a circular cylinder with various Reynolds numbers to understand the predicting capability of FLUENT. Part 2 simulated the flow passing a single c-type blade subject to different turbulent models to find the applicability of turbulent model for such flows. Part 3 simulated the flow field of drag type VAWTs to obtain the average torque and power.
    The results show that different turbulence models affect the numerical results significantly. The applicability of turbulence models in VAWTs need to be investigated extensively. The trends of the performance curves predicted numerically match that obtained experimentally.
    The discrepancy between experimental and numerical results is about 10-20% when the rotational speed of turbines is lower and the torque is higher. The discrepancy is much larger when the rotational speed is high and the torque is low. This may be due to the resistance from the wind turbine system, which was not included in the numerical results.
    Appears in Collections:[航空太空工程學系暨研究所] 學位論文

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