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SMARTSOL〜The AIM Implementation

SMARTSOL〜The AIM Implementation

第二回目は順応陰解法(AIM)の実装編をお届けします。AIM法の陽・陰解法への切り替えについて閾値法と局所行列安定法が提唱されている。This second thread presents an implementation of the Adaptive Implicit Method (AIM), in which the Threshold Method as well as the Local Matrix Stability Analysis Method are proposed as the switching criterion between the explicit and implicit AIM method.

SMARTSOL〜The AIM Matrix Solver

SMARTSOL〜The AIM Matrix Solver

“SMARTSOL”の重要論点の一つである順応陰解法(AIM)に関してシリーズでご紹介します。第一回目は行列解法に於けるAIM法の取り扱い方法について説明します。I would like to address about the Adaptive Implicit Method (AIM) in series, which is one of the main functions incorporated in SMARTSOL. In this first thread, we will discuss how to implement the AIM method in the matrix solver.

SMARTSOL〜Test Matrix

SMARTSOL〜Test Matrix

先般紹介した”SMARTSOL” Matrix Solverのコーディング編の開始です。Matrix Solverとは、油層内媒体を移動する流体の物質収支を偏微分方程式(Mass Conservation Equation)を線形化し得られる疎な係数行列をもつ連立一次方程式を解くサブルーチンでリザーバーシミュレーションモデルの中核である。当然座学に付きあって頂ける程興味津々なテーマでもないので、先ずは実際にその係数行列を構築して連立一次方程式の解法手順を外観しましょう。実学主体の方が理解しやすいかも。Let’s commence the practical coding for the ”SMARSOL” Matrix Solver introduced earlier. Matrix Solver is the subroutine librares that solve the simultaneous linear equations with a sparse incidence matrix incurred after linearizing the Mass Conservation Equations by the Newton-Rapson method which define the material balance of the fluid movement in the reservoir porous media. It forms the core of the reservoir simulation model. The subject matter is not so exciting enough to study through lectures….

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