Numerical Simulation of Wind Turbine Rotors Autorotation by Using the Modified LS-STAG Immersed Boundary Method

<div>The time dependency for the torque <svg height="15.5402pt" id="M72" style="vertical-align:-3.382501pt" version="1.1" viewbox="-0.0498162 -12.1577 75.2604 15.5402" width="75.2604pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M962 650H795L470 145L347 650H176L170 622C268 613 275 606 244 503L190 322C150 188 132 126 118 91C102 50 80 33 18 28L12 0H245L251 28C175 35 170 48 174 93C177 128 191 180 220 284L292 542H294C331 392 383 150 409 4H432L774 555H776L714 137C700 40 694 34 612 28L606 0H868L874 28C793 34 784 37 797 137L849 533C859 612 863 616 956 622L962 650Z" id="g113-78"></path></g><g transform="matrix(.0091,0,0,-0.0091,12.807,-5.741)"><path d="M531 0V30C465 35 457 42 457 102V703L449 709C433 700 418 692 402 687C382 700 350 710 319 710C276 703 238 689 199 658C144 613 125 567 117 542C109 519 104 491 104 454V439H56L29 408L33 396H104V102C104 41 98 38 33 30V0H253V30C192 35 185 42 185 102V396H292C304 403 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International Journal of Rotating Machinery

fig7

Figure 7

Figure 7: Numerical Simulation of Wind Turbine Rotors Autorotation by Using the Modified LS-STAG Immersed Boundary Method 