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Talk:Blasius boundary layer

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90: 80: 53: 202: 177: 436:-Someone changed the Prandtl y-momnentum equation to "0 = dP/dy" from the original true Prandtl momentum expression. This is obviously not the correct Prandtl expression. It is not even a correct momentum balance equation. Setting dP/dy to zero was never invoked by Blasius. It is not a condition that is required to obtain the Blasius solution. I am therefore changing it back to the correct expression. 252: 22: 305:- It is remarked that the Falkner-Skan equation reduces to the Blasius equation for m=0. However, it does not in the form the presented here. One way to fix this is to add a trivial factor two to the similary parameter (in which case Blasius can be written as: 302:- The boundary layer equations omit the pressure gradient which is essential for Falkner-Skan. I also think that it would be helpful to mention how Bernouilli's equation is used to express the pressure gradient in terms of velocity. 158: 63: 499: 348: 208: 182: 410: 296:- I find the introduction to Prandtl's boundary layer equations inadequate and superfluous - there already exists a much better description on the Boundary layer page. 376: 146: 504: 494: 136: 89: 451: 276: 112: 489: 509: 103: 58: 33: 447: 471: 264: 467: 39: 439: 213: 187: 415:- A figure showing the effect of the pressure gradient (m) on the velocity profile would be useful. 21: 443: 418: 279:
for that content in the latter page, and it must not be deleted as long as the latter page exists.
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on Knowledge. If you would like to participate, please visit the project page, where you can join
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in the second and it uses partial differentials where is should use ordinary differentials.
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Apart from the lack of citations I find this article lacking in other ways:
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The link to the translation of the Blasius article is incorrect.
246: 15: 299:- Mention the application of Falkner-Skan to wedge flows. 293:- The title covers only the first half of the article. 272: 268: 259: 384: 359: 311: 107:, a collaborative effort to improve the coverage of 404: 370: 342: 223:Knowledge:WikiProject Chemical and Bio Engineering 226:Template:WikiProject Chemical and Bio Engineering 466:The linked paper is about cylinders, not walls. 211:, a project which is currently considered to be 8: 500:B-Class physics articles of Low-importance 437: 250: 171: 47: 391: 383: 358: 310: 257:Text and/or other creative content from 209:WikiProject Chemical and Bio Engineering 271:on December 17 2015. The former page's 173: 49: 19: 353:- The formulas are inconsitent using 229:Chemical and Bio Engineering articles 7: 207:This article is within the scope of 101:This article is within the scope of 38:It is of interest to the following 14: 200: 175: 88: 78: 51: 20: 505:B-Class fluid dynamics articles 495:Low-importance physics articles 141:This article has been rated as 1: 156:This article is supported by 121:Knowledge:WikiProject Physics 115:and see a list of open tasks. 476:17:31, 1 February 2024 (UTC) 427:22:08, 9 February 2016 (UTC) 220:Chemical and Bio Engineering 183:Chemical and Bio Engineering 124:Template:WikiProject Physics 432:Prandtl y-momentum equation 343:{\displaystyle f'''+f''f=0} 526: 147:project's importance scale 456:17:53, 6 April 2023 (UTC) 405:{\displaystyle df/d\eta } 263:was copied or moved into 195: 155: 140: 73: 46: 490:B-Class physics articles 159:Fluid Dynamics Taskforce 510:Fluid dynamics articles 406: 378:in the first half and 372: 344: 265:Blasius boundary layer 28:This article is rated 407: 373: 345: 286:Sloppy and incomplete 382: 357: 309: 277:provide attribution 104:WikiProject Physics 402: 371:{\displaystyle f'} 368: 340: 34:content assessment 458: 442:comment added by 283: 282: 245: 244: 241: 240: 237: 236: 170: 169: 166: 165: 517: 411: 409: 408: 403: 395: 377: 375: 374: 369: 367: 349: 347: 346: 341: 330: 319: 262: 260:Blasius function 254: 253: 247: 231: 230: 227: 224: 221: 204: 197: 196: 191: 179: 172: 129: 128: 127:physics articles 125: 122: 119: 98: 93: 92: 82: 75: 74: 69: 66: 55: 48: 31: 25: 24: 16: 525: 524: 520: 519: 518: 516: 515: 514: 480: 479: 464: 434: 380: 379: 360: 355: 354: 323: 312: 307: 306: 288: 258: 251: 228: 225: 222: 219: 218: 185: 126: 123: 120: 117: 116: 94: 87: 67: 61: 32:on Knowledge's 29: 12: 11: 5: 523: 521: 513: 512: 507: 502: 497: 492: 482: 481: 463: 460: 444:David Weyburne 433: 430: 401: 398: 394: 390: 387: 366: 363: 339: 336: 333: 329: 326: 322: 318: 315: 287: 284: 281: 280: 275:now serves to 255: 243: 242: 239: 238: 235: 234: 232: 205: 193: 192: 180: 168: 167: 164: 163: 154: 151: 150: 143:Low-importance 139: 133: 132: 130: 113:the discussion 100: 99: 96:Physics portal 83: 71: 70: 68:Low‑importance 64:Fluid Dynamics 56: 44: 43: 37: 26: 13: 10: 9: 6: 4: 3: 2: 522: 511: 508: 506: 503: 501: 498: 496: 493: 491: 488: 487: 485: 478: 477: 473: 469: 468:Aubrey Jaffer 461: 459: 457: 453: 449: 445: 441: 431: 429: 428: 424: 420: 416: 413: 399: 396: 392: 388: 385: 364: 361: 351: 337: 334: 331: 327: 324: 320: 316: 313: 303: 300: 297: 294: 291: 285: 278: 274: 270: 266: 261: 256: 249: 248: 233: 216: 215: 210: 206: 203: 199: 198: 194: 189: 184: 181: 178: 174: 161: 160: 153: 152: 148: 144: 138: 135: 134: 131: 114: 110: 106: 105: 97: 91: 86: 84: 81: 77: 76: 72: 65: 60: 57: 54: 50: 45: 41: 35: 27: 23: 18: 17: 465: 438:— Preceding 435: 417: 414: 352: 304: 301: 298: 295: 292: 289: 212: 157: 142: 102: 40:WikiProjects 484:Categories 269:this edit 452:contribs 440:unsigned 419:Jprins66 214:inactive 188:inactive 273:history 145:on the 118:Physics 109:Physics 59:Physics 30:B-class 36:scale. 267:with 472:talk 448:talk 423:talk 350:). 137:Low 486:: 474:) 454:) 450:• 425:) 400:η 62:: 470:( 446:( 421:( 397:d 393:/ 389:f 386:d 365:′ 362:f 338:0 335:= 332:f 328:″ 325:f 321:+ 317:‴ 314:f 217:. 190:) 186:( 162:. 149:. 42::

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