…This theorem can also be generalized when ρ is a single-valued function of p (barotropic fluids) and the external force is a conservative force with potential Ω, where is constant along streamlines and, when there is a vortex distribution, along vortex lines. Here, is called the pressure function, which is p /ρ for a constant density flow and enthalpy for an isentropic flow. A surface formed by streamlines and vortex lines, on which H is constant, is called a Bernoulli surface. … *Some of the terminology explanations that mention "pressure function" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…この定理はρがpの1価関数(バロトロピック流体)で,外力がポテンシャルΩをもつ保存力であるときにも一般化され,が流線に沿って,また渦分布があるときには渦線に沿っても一定となる。ここで,は圧力関数と呼ばれ,密度一定の流れではp/ρ,等エントロピーの流れではエンタルピーとなる。また流線と渦線で作られ,そのうえでHが一定である面はベルヌーイ面と呼ばれる。… ※「圧力関数」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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