磁普兰特数

磁普兰特数Prm)是在磁流体力学中的無量綱,大約是動量擴散率(黏度)及磁擴散率的比例[1],定義為:

其中

太陽對流層中磁普兰特数約為10−2[2],在行星內部及實際室的液态金属发电机中,磁普兰特数約為10−5

相關條目

參考資料

  1. Schekochihin, Alexander A.; Cowley, Steven C.; Maron, Jason L.; McWilliams, James C. . Physical Review Letters. 2004-02-03, 92 (5): 054502. Bibcode:2004PhRvL..92e4502S. ISSN 0031-9007. PMID 14995310. S2CID 119389465. arXiv:astro-ph/0308336可免费查阅. doi:10.1103/physrevlett.92.054502.
  2. Schumacher, Jörg; Sreenivasan, Katepalli R. . Reviews of Modern Physics. 7 October 2020, 92 (4): 041001 [17 April 2021]. Bibcode:2020RvMP...92d1001S. S2CID 225111979. doi:10.1103/RevModPhys.92.041001.
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