翻訳と辞書 Words near each other ・ False stonefish ・ False sunflower ・ False sunrise ・ False Confession (band) ・ False consciousness ・ False coral ・ False coverage rate ・ False Creek ・ False Creek Ferries ・ False dandelion ・ False dawn ・ False Dawn (short story) ・ False Delicacy ・ False designation of origin ・ False Detour Channel ・ False diffusion ・ False dilemma ・ False discovery rate ・ False Divi Point ・ False Dmitriy ・ False Dmitriy I ・ False Dmitry II ・ False Dmitry III ・ False document ・ False documentation ・ False door ・ False economy ・ False ending ・ False equivalence ・ False etymology 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 False diffusion ： ウィキペディア英語版 False diffusion False diffusion is a type of error observed when the upwind scheme is used to approximate the convection term in convection–diffusion equations. The more accurate central difference scheme can be used for the convection term, but for grids with cell Peclet number more than 2, the central difference scheme is unstable and the simpler upwind scheme is often used. The resulting error from the upwind differencing scheme has a diffusion-like appearance in two- or three-dimensional co-ordinate systems and is referred as "false diffusion". False-diffusion errors in numerical solutions of convection-diffusion problems, in two- and three-dimensions, arise from the numerical approximations of the convection term in the conservation equations. Over the past 20 years many numerical techniques have been developed to solve convection-diffusion equations and none are problem-free, but false diffusion is one of the most serious problems and a major topic of controversy and confusion among numerical analysts. ==Definition== False diffusion is defined as an error having a diffusion-like appearance, obtained when the ''upwind scheme'' is used in multidimensional cases to solve for the distribution of transported properties flowing non-orthogonally to one or more of the system's major axes. The error is absent when the flow is orthogonal or parallel to each major axis. 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「False diffusion」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.