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CFDの解法選択 - gijyutsu-keisan.com

CFD .. + = 0 .. + = + . = , , .. + = + .. = 1 = = .. + = + .. CFD . = .. CFD computational fluid dynamics = .. Mesh t .. t .. + = + .. + .. CFD . CFD .. CFD .. 1 FDM Finite Difference Method .. 2 FVM Finite Volume Method . CV Control Volume CV . CFD . 3 FVM Finite Element Method .. CAE . 1 2 3 .. 1 Explicit Method . t t + t . 2 Implicit Method . t+ t .. 1 .. STEP STEP.. 1 2 .. t .. 1 .. 2 .. + .. M = v / c .. 2 = .. = 0 + =0.. d 0 .. 1 2 . = = = .. 2 .. = .. 1. 1 1 2 = 5% . 2.. 2 =.. d 0 d 0 . c = c < . v c .. d 0 .. + = 0.. + = + . = , , .. v P .. v P .. + = 0.. + = + . = , , .. + = + .. , , = 0 3 .. 3 3 .. 1 2 3 . START START START.. No No No .. Yes Yes Yes END END END.. v p vpred ppred vcorr pcorr . 0 . = + .. = + . 4 . - . SIMPLE Semi-Implicit Method for Pressure-Linked Equation SIMPLE C SIMPLE Consistent SIMPLE R SIMPLE Revise PISO Pressure-Implicit with Splitting of Operators.

CFDComputational Fluid Dynamics) = 数値流体力学 流体の運動把握 = レイノルズの輸送方程式を解くには... 解析的には解けない → 数値計算なら解ける 微分方程式をコンピュータで計算するには対象の離散化(空間・時間)が必要 デジタル化 空間の離散化

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  Computational, Fluid, Dynamics, Computational fluid dynamics

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Transcription of CFDの解法選択 - gijyutsu-keisan.com

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