Oscillations, Waves, and Interactions - GWDG

More documents

Recommendations

Info

166 W. Lauterborn et al. Figure 29. Colour-coded plots of the spatio-temporal evolution of the temperature (top) and the OH density (bottom) in the interior of a collapsing sonoluminescing bubble. Rest radius Rn = 4.5µm; sound frequency 26.5 kHz; sound pressure amplitude 130 kPa, water temperature 300 K, accomodation coefficient for water vapour αv = 0.1. Ten million particles have been used in the simulation.
The single bubble – a hot microlaboratory 167 calculations. The white line marks the bubble wall. The center temperature reaches about 16000 K upon collapse where the bubble attains a minimum value of about 0.8 µm. This is in the range of values reported for sonoluminescing bubbles derived from optical spectra of the light emitted. It is seen that the temperature distribution is very inhomogeneous. The density in the bubble turns out to come close to or even exceed that of liquid water. Figure 29(bottom) presents an example for the capability of the MD method to investigate bubble chemistry. For the same bubble as before the density of OH radicals is plotted in dependence on space and time. The hydroxyl radical is an important chemical species in sonochemistry that can dissolve in the water and mediate further reactions there. The OH distribution closely matches the temperature field. Obviously it is also produced in an outgoing compression wave heading toward the bubble wall. As the temperature drops the OH is quickly consumed again by chemical reactions. Furthermore, in this spherically symmetric collapse the OH concentration remains small in the cold gas-vapour layer near the bubble wall. This means that OH uptake by the liquid should be small as well. It is difficult to accurately predict the amount of OH going into the liquid because the uptake coefficients are not (or not well) known. The production of OH is closely correlated with the distribution of water vapour in the bubble. It has been shown that in the late collapse phase the water vapour cannot diffuse out of the bubble any more and remains trapped [32,36]. Also, in the presence of non-condensable gas, e. g. noble gases, demixing occurs so that the lighter and hotter molecules accumulate at the center of the bubble. MD simulations confirm this effect and also yield measurable effects in bubble chemistry caused by the redistribution of water vapour. When fewer particles are used in a molecular dynamics calculation the bubble dynamics can be followed over several oscillation cycles with acceptable computation time. Even with as few as 50000–100000 particles the radial dynamics obtained closely matches results obtained with conventional ODE bubble models (Fig. 30). The advantage is that the MD calculation also provides information on the vapour content and the evolution of chemical species in the bubble over this long time. r[µm] 50 40 30 20 10 0 0 20 40 60 80 t[µs] Figure 30. Radius vs. time curve for an SBSL bubble with the same parameters as in Fig. 29. The MD simulation was run with 110000 particles.
Page 1:
Thomas Kurz, Ulrich Parlitz, and Ud
Page 4 and 5:
erschienen im Universitätsverlag G
Page 6 and 7:
Bibliographische Information der De
Page 8 and 9:
iv Contents Laser speckle metrology
Page 11 and 12:
Oscillations, Waves and Interaction
Page 13 and 14:
Applied physics at the “Dritte”
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
noise component [GNE] 5 4 3 2 1 can
Page 39 and 40:
3.4 Transfer to running speech Spee
Page 41 and 42:
3.4.2 Analysis of running speech Sp
Page 43 and 44:
Speech research 33 Area [Pixels] 60
Page 45 and 46:
Speech research 35 [13] D. Michaeli
Page 47 and 48:
Page 49 and 50:
Specific signal types in hearing re
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81:
Page 84 and 85:
74 D. Ronneberger et al. Mechel fou
Page 86 and 87:
76 D. Ronneberger et al. (flow velo
Page 88 and 89:
78 D. Ronneberger et al. |t + acous
Page 90 and 91:
80 D. Ronneberger et al. Figure 6.
Page 92 and 93:
82 D. Ronneberger et al. Figure 8.
Page 94 and 95:
84 D. Ronneberger et al. (flow velo
Page 96 and 97:
86 D. Ronneberger et al. R / L ⋅
Page 98 and 99:
88 D. Ronneberger et al. e. g. temp
Page 100 and 101:
90 D. Ronneberger et al. 3.2 Qualit
Page 102 and 103:
92 D. Ronneberger et al. As usual t
Page 104 and 105:
94 D. Ronneberger et al. (wavenumbe
Page 106 and 107:
96 D. Ronneberger et al. powers of
Page 108 and 109:
98 D. Ronneberger et al. an increas
Page 110 and 111:
100 D. Ronneberger et al. The term
Page 112 and 113:
102 D. Ronneberger et al. Neverthel
Page 114 and 115:
104 D. Ronneberger et al. [4] J. Br
Page 116 and 117:
106 D. Ronneberger et al. strömung
Page 118 and 119:
108 D. Guicking synchronised tuning
Page 120 and 121:
110 D. Guicking primary noise micro
Page 122 and 123:
112 D. Guicking primary sensor desi
Page 124 and 125:
114 D. Guicking by an antiphase sou
Page 126 and 127: 116 D. Guicking R L C C + + 1 1−C
Page 128 and 129: 118 D. Guicking More involved than
Page 130 and 131: 120 D. Guicking In the 1980s, longi
Page 132 and 133: 122 D. Guicking with electrodynamic
Page 134 and 135: 124 D. Guicking 3.6 Noise reduction
Page 136 and 137: 126 D. Guicking the turbulence of a
Page 138 and 139: 128 D. Guicking References [1] Lord
Page 140 and 141: 130 D. Guicking [44] Falcke, H.,
Page 142 and 143: 132 D. Guicking [84] J. Melcher,
Page 144 and 145: 134 D. Guicking [125] D. Heyland et
Page 146 and 147: 136 D. Guicking [166] S. Zommer et
Page 148 and 149: 138 D. Guicking [212] M. L. Post an
Page 150 and 151: 140 W. Lauterborn et al. liquid κ
Page 152 and 153: 142 W. Lauterborn et al. Figure 2.
Page 154 and 155: 144 W. Lauterborn et al. nator, and
Page 156 and 157: 146 W. Lauterborn et al. by types a
Page 158 and 159: 148 W. Lauterborn et al. bubble rad
Page 164 and 165: 154 W. Lauterborn et al. P koll [kb
Page 166 and 167: 156 W. Lauterborn et al. Pulse widt
Page 168 and 169: 158 W. Lauterborn et al. laser puls
Page 178 and 179: 168 W. Lauterborn et al. R [µ m] 1
Page 180 and 181: 170 W. Lauterborn et al. [17] M. P.
Page 182 and 183: 172 R. Mettin (a) (b) Figure 1. Bub
Page 184 and 185: 174 R. Mettin 0 ms 2 mm 1 ms 2 ms 3
Page 186 and 187: 176 R. Mettin important quantity ch
Page 188 and 189: 178 R. Mettin 100 kPa 200 kPa | | F
Page 190 and 191: 180 R. Mettin Figure 7. Trapped sin
Page 192 and 193: 182 R. Mettin concentration of spec
Page 194 and 195: 184 R. Mettin which is called the p
Page 196 and 197: 186 R. Mettin R 02 [µm] R 02 [µm]
Page 198 and 199: 188 R. Mettin constant to M a = 2π
Page 200 and 201: 190 R. Mettin (a) p a [Pa] 140 120
Page 202 and 203: 192 R. Mettin z [mm] 5 4 3 2 1 0 -1
Page 204 and 205: 194 R. Mettin Figure 17. Left: Expe
Page 206 and 207: 196 R. Mettin - a hot microlaborato
Page 208 and 209: 198 R. Mettin [52] R. Mettin, C.-D.
Page 210 and 211: 200 W. Eisenmenger and U. Kaatze Th
Page 212 and 213: 202 W. Eisenmenger and U. Kaatze Fi
Page 224 and 225: 214 W. Eisenmenger and U. Kaatze 6
Page 226 and 227:
216 W. Eisenmenger and U. Kaatze Pr
Page 228 and 229:
218 A. Vogel, I. Apitz, V. Venugopa
Page 230 and 231:
Page 232 and 233:
Page 234 and 235:
Page 236 and 237:
Page 238 and 239:
Page 240 and 241:
Page 242 and 243:
Page 244 and 245:
Page 246 and 247:
Page 248 and 249:
Page 250 and 251:
Page 252 and 253:
Page 254 and 255:
Page 256 and 257:
Page 258 and 259:
Page 260 and 261:
Page 262 and 263:
Page 264 and 265:
Page 266 and 267:
Page 268 and 269:
Page 270 and 271:
260 K. D. Hinsch Generally, any of
Page 272 and 273:
262 K. D. Hinsch Figure 1. Monitori
Page 274 and 275:
264 K. D. Hinsch Figure 3. ESPI stu
Page 276 and 277:
266 K. D. Hinsch Figure 4. Deterior
Page 278 and 279:
268 K. D. Hinsch Often, in-plane mo
Page 280 and 281:
270 K. D. Hinsch Figure 7. Optical
Page 282 and 283:
272 K. D. Hinsch Figure 9. Humidity
Page 284 and 285:
274 K. D. Hinsch locations that tak
Page 286 and 287:
276 K. D. Hinsch Figure 13. Map of
Page 288 and 289:
278 K. D. Hinsch References [1] D.
Page 290 and 291:
280 Schreiber not moving along with
Page 292 and 293:
282 Schreiber These properties made
Page 294 and 295:
284 Schreiber Figure 3. The G ring
Page 296 and 297:
286 Schreiber Rotation Rate [rad/s]
Page 298 and 299:
288 Schreiber and it is currently b
Page 300 and 301:
290 Schreiber n1 D A B n Figure 8.
Page 302 and 303:
292 Schreiber Beamwalk [µm] 80.0 7
Page 304 and 305:
294 Schreiber ∆ Perimeter [*10e12
Page 306 and 307:
296 Schreiber and the last term acc
Page 308 and 309:
298 Schreiber Δf [µHz] 100 50 0 -
Page 310 and 311:
300 Schreiber formation of a new wo
Page 312 and 313:
302 Schreiber PSD [*10 16 (rad/s) 2
Page 314 and 315:
304 Schreiber 7.2 The ring laser co
Page 316 and 317:
306 Schreiber Demodulator Signal [V
Page 318 and 319:
308 Schreiber Est. Phase Vel. (m/s)
Page 320 and 321:
310 Schreiber [18] V. Frede and V.
Page 322 and 323:
312 Martin Dressel tice is reduced
Page 324 and 325:
314 Martin Dressel Metallic whisker
Page 326 and 327:
316 Martin Dressel (a) (b) (c) CH 3
Page 328 and 329:
318 Martin Dressel 3.1 Charge densi
Page 330 and 331:
320 Martin Dressel Absorptivity σ
Page 332 and 333:
322 Martin Dressel brought a confir
Page 334 and 335:
324 Martin Dressel a charge disprop
Page 336 and 337:
326 Martin Dressel Conductivity 70
Page 338 and 339:
328 Martin Dressel Reflectivity Con
Page 340 and 341:
330 Martin Dressel References [1] M
Page 342 and 343:
332 Martin Dressel and L. Montgomer
Page 344 and 345:
334 R. Pottel, J. Haller and U. Kaa
Page 346 and 347:
Page 348 and 349:
Page 350 and 351:
Page 352 and 353:
Page 354 and 355:
Page 356 and 357:
Page 358 and 359:
Page 360 and 361:
Page 362 and 363:
Page 364 and 365:
Page 366 and 367:
Page 368 and 369:
Page 370 and 371:
Page 372 and 373:
Page 374 and 375:
Page 376 and 377:
Page 378 and 379:
368 U. Kaatze and R. Behrends with
Page 380 and 381:
370 U. Kaatze and R. Behrends Figur
Page 382 and 383:
Page 384 and 385:
Page 386 and 387:
Page 388 and 389:
Page 390 and 391:
Page 392 and 393:
Page 394 and 395:
Page 396 and 397:
386 U. Kaatze and R. Behrends of th
Page 398 and 399:
Page 400 and 401:
Page 402 and 403:
Page 404 and 405:
Page 406 and 407:
Page 408 and 409:
398 U. Kaatze and R. Behrends [6] M
Page 410 and 411:
400 U. Kaatze and R. Behrends [49]
Page 412 and 413:
402 U. Kaatze and R. Behrends (2002
Page 414 and 415:
404 U. Kaatze and R. Behrends Copyr
Page 416 and 417:
406 U. Parlitz here chaos control m
Page 418 and 419:
408 U. Parlitz Figure 2. Amplitude
Page 420 and 421:
410 U. Parlitz 4 10 5 5 (a) (b) (c)
Page 422 and 423:
412 U. Parlitz two-parameter studie
Page 424 and 425:
414 U. Parlitz GN differential opti
Page 426 and 427:
416 U. Parlitz P 1 P 2 P 3 S P 1 P
Page 428 and 429:
418 U. Parlitz Figure 9. Correlatio
Page 430 and 431:
420 U. Parlitz series” where for
Page 432 and 433:
422 U. Parlitz current state future
Page 434 and 435:
424 U. Parlitz tion [69] of two uni
Page 436 and 437:
426 U. Parlitz LD1 LD2 M BS1 BS2 OD
Page 438 and 439:
428 U. Parlitz with a clear tendenc
Page 440 and 441:
430 U. Parlitz (a) y (c) y 40 20 È
Page 442 and 443:
432 U. Parlitz [29] P. Grassberger,
Page 444 and 445:
434 U. Parlitz [76] H. D. I. Abarba
Page 446 and 447:
436 S. Lakämper and C. F. Schmidt
Page 448 and 449:
Page 450 and 451:
Page 452 and 453:
Page 454 and 455:
Page 456 and 457:
Page 458 and 459:
Page 460 and 461:
Page 462 and 463:
Page 464 and 465:
Page 466 and 467:
Page 468 and 469:
Page 470 and 471:
Page 472 and 473:
462 Index basin of attraction, 144
Page 474 and 475:
464 Index cone bubble structure, 19
Page 476 and 477:
466 Index turbulent, 111, 126 fluct
Page 478 and 479:
468 Index LPC, 29 luminescence of b
Page 480 and 481:
470 Index peak factor, 38, 43 Peier
Page 482 and 483:
472 Index laser-induced bubble, 152
Page 484 and 485:
474 Index ultraharmonic resonance,
show all

Oscillations, Waves, and Interactions - GWDG

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?