Wall Pressure and Blade Surface Pressure in a Side Channel Blower

<div>Measurement positions for wall pressure measurements: unwrapped side channel (a), axial cut (b). <svg height="14.2262pt" id="M25" style="vertical-align:-3.429501pt" version="1.1" viewbox="-0.0498162 -10.7967 32.8955 14.2262" width="32.8955pt" 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="M559 271C559 395 493 448 433 448C370 448 304 394 275 297C259 245 235 121 219 37C157 54 113 110 113 201C113 310 180 386 276 429L265 457C131 410 23 326 23 186C23 83 86 5 211 -10C180 -159 167 -220 158 -252L165 -261C198 -255 236 -246 251 -218L287 -5C421 9 559 119 559 271ZM484 273C484 144 400 40 293 33L352 331C364 389 382 406 405 406C431 406 484 370 484 273Z" id="g113-253"></path></g><g transform="matrix(.013,0,0,-0.013,11.199,0)"><path d="M535 323V373H52V323H535ZM535 138V188H52V138H535Z" id="g117-34"></path></g><g transform="matrix(.013,0,0,-0.013,22.462,0)"><path d="M241 635C89 635 35 457 35 312C35 153 89 -12 240 -12C390 -12 443 166 443 312C443 466 390 635 241 635ZM238 602C329 602 354 454 354 312C354 172 330 22 240 22C152 22 124 173 124 313S148 602 238 602Z" id="g113-49"></path></g><g transform="matrix(.0091,0,0,-0.0091,28.702,-5.741)"><path d="M339 262C339 340 273 403 193 403S48 340 48 262S113 121 193 121S339 184 339 262ZM283 262C283 210 242 168 193 168S104 210 104 262S144 356 193 356S283 314 283 262Z" id="g54-73"></path></g></svg> is located in the middle of the stripper. First column of measurement positions (Pos. 1) is located at an absolute angle of 45.1°. Axial sensor positions marked with bold numbers depict steady measurements positions of the Pressure Systems DTC Initium. Axial sensor positions marked with normal numbers depict unsteady measurements positions of the Kulite pressure transducers.</div>

International Journal of Rotating Machinery

Wall Pressure and Blade Surface Pressure in a Side Channel Blower

Figure 7