【摘要】：水平軸風(fēng)力發(fā)電機(jī)組是風(fēng)能利用的主要形式之一。在整個(gè)風(fēng)電機(jī)組運(yùn)行中,葉片直接影響風(fēng)能的轉(zhuǎn)換效率,影響機(jī)組的年發(fā)電量,是風(fēng)能利用的重要一環(huán)。同時(shí),葉片是機(jī)組中的重要部件,葉片的合理設(shè)計(jì),關(guān)系到風(fēng)電組的正常穩(wěn)定運(yùn)行,直接影響風(fēng)電場(chǎng)的投資收益。本文以設(shè)計(jì)容量200 kW的水平軸式風(fēng)力發(fā)電機(jī)組的葉片為研究對(duì)象,研究了葉片的基礎(chǔ)氣動(dòng)分析理論,包括一維動(dòng)量理論,貝茨極限,葉片微元理論等。同時(shí)深入學(xué)習(xí)了葉片氣動(dòng)外形的兩種設(shè)計(jì)方法：簡(jiǎn)化設(shè)計(jì)方法和葛勞渥(Glauert)方法�；谟�(jì)算流體力學(xué)軟件Fluent對(duì)設(shè)計(jì)葉片所選的截面翼型進(jìn)行了二維氣動(dòng)數(shù)值計(jì)算理論模擬,對(duì)截面翼型的流場(chǎng)進(jìn)行了分析,得到了翼型的氣動(dòng)特性參數(shù)。將理論計(jì)算數(shù)據(jù)與資料數(shù)據(jù)進(jìn)行了對(duì)比,數(shù)據(jù)基本吻合,驗(yàn)證了二維翼型氣動(dòng)性能數(shù)值模擬的可靠性,為后續(xù)的設(shè)計(jì)提供了依據(jù)。對(duì)200 kW的風(fēng)力機(jī)葉片的氣動(dòng)外形基于葛勞渥(Glauert)方法進(jìn)行了設(shè)計(jì),確定了葉片氣動(dòng)外形的主要參數(shù),并對(duì)部分參數(shù)進(jìn)行了優(yōu)化。研究了風(fēng)力機(jī)葉片三維實(shí)體的建模方法,同時(shí)基于solidworks軟件完成了葉片的三維實(shí)體模型的建立。最后,對(duì)本文設(shè)計(jì)的容量為200 kW的風(fēng)電機(jī)組葉片,使用專業(yè)設(shè)計(jì)軟件bladed,進(jìn)行了風(fēng)力機(jī)葉片的氣動(dòng)性能預(yù)測(cè)分析,包括風(fēng)能利用系數(shù)、機(jī)組的風(fēng)功率曲線兩方面的內(nèi)容,結(jié)果表明,200kW風(fēng)力機(jī)葉片的氣動(dòng)外形設(shè)計(jì)達(dá)到了設(shè)計(jì)的要求。
[Abstract]:Horizontal axis wind turbine is one of the main forms of wind energy utilization. In the whole operation of wind turbine, the blade directly affects the conversion efficiency of wind energy and the annual power generation of the unit, which is an important part of the utilization of wind energy. At the same time, the blade is an important part in the unit. The reasonable design of the blade is related to the normal and stable operation of the wind power unit and directly affects the investment income of the wind farm. In this paper, the blade of horizontal axis wind turbine with design capacity of 200 kW is taken as the research object, and the basic aerodynamic analysis theory of blade is studied, including one-dimensional momentum theory, Bates limit, blade micro-element theory and so on. At the same time, two design methods of blade aerodynamic profile are studied: simplified design method and (Glauert) method. Based on the computational fluid dynamics software Fluent, the two-dimensional aerodynamic numerical simulation of the section airfoil selected by the design blade is carried out. The flow field of the section airfoil is analyzed, and the aerodynamic characteristic parameters of the airfoil are obtained. The theoretical calculation data are compared with the data and the data are in good agreement with each other, which verifies the reliability of the numerical simulation of the aerodynamic performance of the two-dimensional airfoil and provides the basis for the subsequent design. The aerodynamic shape of a 200 kW wind turbine blade is designed based on the (Glauert) method. The main parameters of the blade are determined and some of the parameters are optimized. The 3D solid modeling method of wind turbine blade is studied, and the 3D solid model of wind turbine blade is built based on solidworks software. Finally, the aerodynamic performance prediction and analysis of the wind turbine blade with capacity of 200 kW is carried out by using the professional design software bladed, including the wind energy utilization coefficient and the wind power curve of the unit. The results show that the aerodynamic shape design of 200kW wind turbine blade meets the design requirements.
【學(xué)位授予單位】：內(nèi)蒙古農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TM315

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本文編號(hào)：2338336