Wind Turbine Aerodynamics and Vorticity-Based Methods: Fundamentals and Recent Applications
暫譯: 風力渦輪機氣動力學與基於渦流的方法:基礎與近期應用

Branlard, Emmanuel

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商品描述

The book introduces the fundamentals of fluid-mechanics, momentum theories, vortex theories and vortex methods necessary for the study of rotors aerodynamics and wind-turbines aerodynamics in particular. Rotor theories are presented in a great level of details at the beginning of the book. These theories include: the blade element theory, the Kutta-Joukowski theory, the momentum theory and the blade element momentum method. A part of the book is dedicated to the description and implementation of vortex methods. The remaining of the book focuses on the study of wind turbine aerodynamics using vortex-theory analyses or vortex-methods. Examples of vortex-theory applications are: optimal rotor design, tip-loss corrections, yaw-models and dynamic inflow models. Historical derivations and recent extensions of the models are presented. The cylindrical vortex model is another example of a simple analytical vortex model presented in this book. This model leads to the development of different BEM models and it is also used to provide the analytical velocity field upstream of a turbine or a wind farm under aligned or yawed conditions. Different applications of numerical vortex methods are presented. Numerical methods are used for instance to investigate the influence of a wind turbine on the incoming turbulence. Sheared inflows and aero-elastic simulations are investigated using vortex methods for the first time. Many analytical flows are derived in details: vortex rings, vortex cylinders, Hill's vortex, vortex blobs etc. They are used throughout the book to devise simple rotor models or to validate the implementation of numerical methods. Several Matlab programs are provided to ease some of the most complex implementations.

商品描述(中文翻譯)

本書介紹了流體力學的基本原理、動量理論、渦流理論以及渦流方法,這些都是研究轉子空氣動力學,特別是風力發電機空氣動力學所必需的。書的開頭詳細介紹了轉子理論,包括:葉片元素理論(blade element theory)、庫塔-喬克斯基理論(Kutta-Joukowski theory)、動量理論(momentum theory)和葉片元素動量法(blade element momentum method)。書中有一部分專門用於描述和實現渦流方法。其餘部分則專注於使用渦流理論分析或渦流方法研究風力發電機的空氣動力學。渦流理論應用的例子包括:最佳轉子設計、尖端損失修正、偏航模型(yaw-models)和動態進流模型(dynamic inflow models)。書中還介紹了模型的歷史推導和最近的擴展。圓柱渦流模型(cylindrical vortex model)是本書中介紹的另一個簡單解析渦流模型。該模型促進了不同的葉片元素法(BEM)模型的發展,並用於提供在對齊或偏航條件下,渦輪機或風電場上游的解析速度場。書中展示了數值渦流方法的不同應用。例如,數值方法被用來研究風力發電機對來流湍流的影響。首次使用渦流方法研究剪切進流和氣動彈性模擬。許多解析流動被詳細推導:渦環、渦柱、希爾渦(Hill's vortex)、渦塊等。這些流動在全書中用於設計簡單的轉子模型或驗證數值方法的實現。書中提供了幾個 Matlab 程式,以簡化一些最複雜的實現。