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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Atwood number ： ウィキペディア英語版 Atwood number The Atwood number (A) is a dimensionless number in fluid dynamics used in the study of hydrodynamic instabilities in density stratified flows. It is a dimensionless density ratio defined as :$\backslash mathrm\; =\; \backslash frac$ where : $\backslash rho\_1$ = density of heavier fluid : $\backslash rho\_2$ = density of lighter fluid ==Field of application== Atwood number is an important parameter in the study of Rayleigh–Taylor instability and Richtmyer–Meshkov instability. In Rayleigh–Taylor instability, the penetration distance of heavy fluid bubbles into the light fluid is a function of acceleration time scale, $\backslash mathrm\; g\; t^2$ where ''g'' is the gravitational acceleration and ''t'' is the time. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Atwood number」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.