On dependence of dynamical structure of numerical solutions of fluid simulations on forcibly added randomness
スポンサーリンク
概要
- 論文の詳細を見る
In the present paper, the dependencies of the numerical results of fluid simulations on forcibly added randomness are discussed. The incompressible Navier-Stokes equations and the continuity equation are solved numerically by using the MAC (Maker-And-Cell) method and implicit temporal scheme. The model adopted in the present study is a flow around a two-dimensional circular cylinder and the Reynolds number is 1500. The randomness which is given by using the pseudo-random number is forcibly added in the time marching step of the discretized Navier-Stokes equations. Dependencies of the averaged structure of asymptotic numerical solutions on the randomness are discussed. Furthermore, the dependence of the qualitative structure of the asymptotic solution of each sample calculation on the amplitude of randomness is also studied. It is clarified that forcibly added random errors may cover the nonlinear errors which make the system unstable. © 2008 Elsevier B.V. All rights reserved.
- 2009-10-01
論文 | ランダム
- 平安中後期の授業展開 : 教科書を読む
- 峰岸純夫著『中世の東国-地域と権力-』
- 上野国由良氏の権力構造
- 卒論発表会の報告と感想
- 防火管理者制度による消防計画と実施 (建築物の火災に対する安全性に関する諸問題) (昭和57年度日本建築学会大会(東北))