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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 SIMPLE algorithm ： ウィキペディア英語版 SIMPLE algorithm In computational fluid dynamics (CFD), SIMPLE algorithm is a widely used numerical procedure to solve the Navier-Stokes equations. ''SIMPLE'' is an acronym for Semi-Implicit Method for Pressure Linked Equations. The SIMPLE algorithm was developed by Prof. Brian Spalding and his student Suhas Patankar at Imperial College, London in the early 1970s. Since then it has been extensively used by many researchers to solve different kinds of fluid flow and heat transfer problems.〔(【引用サイトリンク】title=SIMPLE solver for driven cavity flow problem )〕〔(【引用サイトリンク】title=Heat transfer applications in turbomachinery )〕 Many popular books on computational fluid dynamics discuss the SIMPLE algorithm in detail. A modified variant is the ''SIMPLER'' algorithm (SIMPLE Revised), that was introduced by Patankar in 1979. == Algorithm == The algorithm is iterative. The basic steps in the solution update are as follows: #Set the boundary conditions. #Compute the gradients of velocity and pressure. #Solve the discretized momentum equation to compute the intermediate velocity field. #Compute the uncorrected mass fluxes at faces. #Solve the pressure correction equation to produce cell values of the pressure correction. #Update the pressure field: $p^\; =\; p^k\; +\; \backslash text\; \backslash cdot\; p^$ where urf is the under-relaxation factor for pressure. #Update the boundary pressure corrections $p\_b^$. #Correct the face mass fluxes: $\backslash dot\; m\_f^\; =\; \backslash dot\; m\_f^\; +\; \backslash dot\; m\_f^$ #Correct the cell velocities: $\backslash vec\; v^\; =\; \backslash vec\; v^\; -\; \backslash frac$ ; where $$ is the gradient of the pressure corrections, $$ is the vector of central coefficients for the discretized linear system representing the velocity equation and Vol is the cell volume. #Update density due to pressure changes. 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「SIMPLE algorithm」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.