…This is called a vortex tube, and the thinner version of this is a vortex filament. Therefore, a general vortex tube can be considered as a bundle of vortex filaments distributed continuously, and its overall strength is also called a vortex flux. The vortex flux is the sum of the vorticity perpendicular to the cross section, but as with a vortex filament, it is equal to the integral of the flow velocity v s along any closed curve that goes around it (circulation γ=∫ v s ds ), and this value is constant along the vortex tube. … *Some of the terminology explanations that mention "vortex bundle" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これを渦管といい,これの細いものが渦糸である。したがって一般の渦管は渦糸が連続的に分布して束になったものとみなすことができ,その全体の強さを渦束ともいう。渦束はその断面に垂直な渦度の総和であるが,渦糸のときのように,それを一周する任意の閉曲線に沿って流速vsを積分したもの(循環γ=∫vsds)に等しく,その値は渦管に沿って一定である。… ※「渦束」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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