翻訳と辞書 Words near each other ・ Lewis Naphtali Dembitz ・ Lewis Nash ・ Lewis Neal ・ Lewis Nguyai Nganga ・ Lewis Nicola ・ Lewis Nielson ・ Lewis Niven ・ Lewis Nixon ・ Lewis Nixon (naval architect) ・ Lewis Nixon (United States Army officer) ・ Lewis Nkosi ・ Lewis Nockalls Cottingham ・ Lewis Nordan ・ Lewis Northey Tappan ・ Lewis Nott ・ Lewis number ・ Lewis Nunatak ・ Lewis O'Brien ・ Lewis O'Brien (Kaurna Elder) ・ Lewis O'Dempsey, 2nd Viscount Clanmalier ・ Lewis O. Barrows ・ Lewis Ochoa ・ Lewis of Luxembourg ・ Lewis of Sweden ・ Lewis offset ・ Lewis Oglethorpe ・ Lewis Oliva ・ Lewis Omer ・ Lewis Orford ・ Lewis Ossie Swingler Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Lewis number ： ウィキペディア英語版 Lewis number Lewis number (Le) is a dimensionless number defined as the ratio of thermal diffusivity to mass diffusivity. It is used to characterize fluid flows where there is simultaneous heat and mass transfer by convection. It is defined as: :$\backslash mathrm\; =\; \backslash frac$ where $\backslash alpha$ is the thermal diffusivity and $D$ is the mass diffusivity. The Lewis number can also be expressed in terms of the Prandtl number and the Schmidt number : :$\backslash mathrm\; =\; \backslash frac\}$. It is named after Warren K. Lewis (1882–1975),〔W. K. Lewis: ''The Evaporation of a Liquid Into a Gas'' In: ''Transactions of the American Society of Mechanical Engineers'', No. 1849, 1922, p. 325-340.〕〔A. Klinkenberg, H. H. Mooy: ''Dimensionless Groups in Fluid Friction, Heat, and Material Transfer'' In: ''Chemical Engineering Progress'', Vol. 44, No. 1, 1948, p. 17-36.〕 who was the first head of the Chemical Engineering Department at MIT. Some workers in the field of combustion assume (incorrectly) that the Lewis number was named for Bernard Lewis (1899–1993), who for many years was a major figure in the field of combustion research. ==Literature== * * 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「Lewis 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.