…Therefore, rot F and div F represent the rotation and source of the fluid, respectively, which is why they are called the rotation and divergence of F. When rot F = 0, the vector field F is said to be vortex-free. In this case, F can be locally expressed as F = gradφ using the scalar function φ. … *Some of the terminology that refers to "vortex-free" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…したがってrotF,divFはそれぞれ流体の回転,わき出しを表しており,このことが,それぞれFの回転,発散と呼ばれる由来である。rotF=0のときベクトル場Fは渦なしであるという。このときFは局所的には,スカラー関数φを使ってF=gradφと表される。… ※「渦なし」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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