重合格子法を応用した複雑形状流れ場の数値解析手法に関する研究 : (第1報)SIMPLE法による3次元定常乱流解析手法の基礎的検討

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There are several airflow problems which should be solved in a building design. However, flow fields around or in buildings usually have quite complicated configurations, and it has been very difficult to solve these airflow problems using a conventional single structured grid coordinate system. One of the advanced airflow analysis technique, which uses an overset type composite grid coordinate system, has many benefits to treat these kinds of problems. In this research work, fundamental numerical formulations of governing equatins were studied to solve steady-state 3-dimensional turbulent airflow problems. The governing equations mapped in a generalized grid coordinate system were descretized using the control volume method, and a solution algorithm of the momentum equation was derived according to the SIMPLE algorithm. In the formulations of the governing equations, a fortified solution algorithm was adopted to connect the data on each overlapped grid coordinate system. As the result of the study, details of numerical formulations which enable solutions by the overset grid coordinate system were obtained.
1997-03-30