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Lundquist number

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High Lundquist numbers indicate highly conducting plasmas, while low Lundquist numbers indicate more resistive plasmas. Laboratory plasma experiments typically have Lundquist numbers between
113: 234: 261: 187: 156: 136: 42: 372: 313: 70: 396: 391: 365: 300: 199: 57: 276: 264: 239: 358: 165: 159: 141: 346: 8: 121: 53: 27: 309: 338: 281: 342: 17: 190: 61: 49: 385: 286: 236:, while in astrophysical situations the Lundquist number can be greater than 45: 263:. Considerations of Lundquist number are especially important in 64:
is the typical velocity scale of the system, and is given by
330: 242: 202: 168: 144: 124: 73: 30: 255: 228: 181: 150: 130: 107: 36: 383: 366: 298: 138:is the typical length scale of the system, 373: 359: 108:{\displaystyle S={\frac {Lv_{A}}{\eta }},} 48:ratio which compares the timescale of an 384: 325: 299:Priest, Eric; Forbes, Terry (2000), 13: 14: 408: 329: 308:, Cambridge University Press, 56:. It is a special case of the 1: 292: 229:{\displaystyle 10^{2}-10^{8}} 52:crossing to the timescale of 345:. You can help Knowledge by 7: 270: 10: 413: 324: 58:magnetic Reynolds number 277:Magnetic Prandtl number 256:{\displaystyle 10^{20}} 341:–related article is a 257: 230: 183: 152: 132: 109: 38: 302:Magnetic Reconnection 265:magnetic reconnection 258: 231: 184: 182:{\displaystyle v_{A}} 153: 151:{\displaystyle \eta } 133: 110: 39: 397:Plasma physics stubs 240: 200: 166: 160:magnetic diffusivity 142: 122: 71: 28: 54:resistive diffusion 253: 226: 179: 148: 128: 105: 34: 392:Plasma parameters 354: 353: 315:978-0-521-48179-3 193:of the plasma. 131:{\displaystyle L} 100: 37:{\displaystyle S} 404: 375: 368: 361: 333: 326: 318: 307: 262: 260: 259: 254: 252: 251: 235: 233: 232: 227: 225: 224: 212: 211: 188: 186: 185: 180: 178: 177: 157: 155: 154: 149: 137: 135: 134: 129: 114: 112: 111: 106: 101: 96: 95: 94: 81: 43: 41: 40: 35: 22:Lundquist number 412: 411: 407: 406: 405: 403: 402: 401: 382: 381: 380: 379: 322: 316: 305: 295: 273: 247: 243: 241: 238: 237: 220: 216: 207: 203: 201: 198: 197: 191:Alfvén velocity 173: 169: 167: 164: 163: 143: 140: 139: 123: 120: 119: 90: 86: 82: 80: 72: 69: 68: 62:Alfvén velocity 29: 26: 25: 12: 11: 5: 410: 400: 399: 394: 378: 377: 370: 363: 355: 352: 351: 339:plasma physics 334: 320: 319: 314: 294: 291: 290: 289: 284: 279: 272: 269: 250: 246: 223: 219: 215: 210: 206: 176: 172: 147: 127: 116: 115: 104: 99: 93: 89: 85: 79: 76: 33: 18:plasma physics 9: 6: 4: 3: 2: 409: 398: 395: 393: 390: 389: 387: 376: 371: 369: 364: 362: 357: 356: 350: 348: 344: 340: 335: 332: 328: 327: 323: 317: 311: 304: 303: 297: 296: 288: 287:Stuart number 285: 283: 282:Péclet number 280: 278: 275: 274: 268: 266: 248: 244: 221: 217: 213: 208: 204: 194: 192: 174: 170: 161: 145: 125: 102: 97: 91: 87: 83: 77: 74: 67: 66: 65: 63: 59: 55: 51: 47: 46:dimensionless 31: 23: 19: 347:expanding it 336: 321: 301: 195: 117: 24:(denoted by 21: 15: 50:Alfvén wave 386:Categories 293:References 214:− 146:η 98:η 60:when the 271:See also 189:is the 158:is the 44:) is a 312:  118:where 20:, the 337:This 306:(PDF) 343:stub 310:ISBN 162:and 16:In 388:: 267:. 249:20 245:10 218:10 205:10 374:e 367:t 360:v 349:. 222:8 209:2 175:A 171:v 126:L 103:, 92:A 88:v 84:L 78:= 75:S 32:S

Index

plasma physics
dimensionless
Alfvén wave
resistive diffusion
magnetic Reynolds number
Alfvén velocity
magnetic diffusivity
Alfvén velocity
magnetic reconnection
Magnetic Prandtl number
Péclet number
Stuart number
Magnetic Reconnection
ISBN
978-0-521-48179-3
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plasma physics
stub
expanding it
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Categories
Plasma parameters
Plasma physics stubs

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