SMART〜Key Analytical Differentiation Issues Hidden in the Black Oil Simulation
ブラック･オイル･シュミレーションの開発に於いて最もTime Consumingな作業は解析微分を求めることであろう。要は淡々と偏微分を算出すれば良いだけであるが実際Hidden Issueが多々ある。今回紹介する論点はSPE Comparison Project課題を用いて演算パフォーマンスの検証過程で収束性に疑念を抱きその解決に悩んだ代表的なIssueである。その具体的事例を解決策を含めてご紹介しよう。The most time consuming task in the development of the black oil simulation is the derivation of the analytical derivative. In short, all that is required is to generate the partial derivatives in a straightforward manner, but in reality there are many hidden problems associated with this derivation. The problem presented here is a typical one, difficult to solve, where convergence has been questioned in the course of verifying computational performance using the SPE Comparative Solution…