Study on Dynamic Stall Control of Rotor Airfoil Based on Coflow Jet

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/ijae/volume-2020/8845924/figures/8845924.fig.0012a.svgz" name="8845924.fig.0012a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Lift coefficient</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/ijae/volume-2020/8845924/figures/8845924.fig.0012b.svgz" name="8845924.fig.0012b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Moment coefficient</td></tr></table>

<div>Lift and moment coefficients of an OA212 CFJ airfoil with different values of <svg height="14.1649pt" id="M73" style="vertical-align:-5.529pt" version="1.1" viewbox="-0.0498162 -8.6359 17.3758 14.1649" width="17.3758pt" 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="M645 631C614 643 545 666 457 666C215 666 23 519 23 283C23 90 158 -16 337 -16C412 -16 489 2 522 10C543 39 590 127 606 167L580 181C519 89 459 18 348 18C201 18 122 136 122 287C122 464 244 632 435 632C544 632 602 595 608 472L639 475C643 526 645 581 645 631Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,8.619,3.132)"><path d="M546 97L529 123C499 91 459 65 450 65C443 65 439 73 445 106C468 226 496 341 523 451H513L436 424C423 357 412 311 403 276C356 195 245 59 190 59C165 59 158 99 166 135L236 445L227 451L152 428L60 18C43 -58 24 -145 24 -183C24 -237 43 -257 66 -257C96 -257 123 -236 130 -224L129 -216C115 -205 96 -156 96 -102C96 -57 105 -7 113 26H115C127 -1 137 -12 158 -12S198 -5 230 19C284 60 332 117 385 186H387C381 154 378 142 370 107C347 1 367 -12 388 -12C422 -12 492 32 546 97Z"></path></g><g transform="matrix(.013,0,0,-0.013,14.269,0)"><path d="M113 -12C146 -12 170 11 170 46C170 78 146 103 114 103S58 78 58 46C58 11 82 -12 113 -12Z"></path></g></svg></div>

International Journal of Aerospace Engineering

Study on Dynamic Stall Control of Rotor Airfoil Based on Coflow Jet

Figure 12