1249 数値解析と実験計測を統合したハイブリッド風洞における解析性能の大幅な向上について

概要

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The new flow field analysis system of "Hybrid Wind Tunnel" is proposed. The basic idea of this facility is an integration of experimental measurement and computer simulation for general flow related problems. The problem treated in this work is well-known flow field as Karman Vortex Street in a wake of a column. The fundamental system components and first-step results are investigated in previous report. In the report, favorable results have been earned even if it used a course grid system. It is generally known that very-fine grid spacing and time increment are necessary for high-accurate numerical analysis. So it needs a huge calculation load. In this paper, the hybrid wind tunnel is compared to the ordinary numerical analysis with fine grid spacing and time increments in its analysis performance including accuracy and calculation time. As a result, calculation load is drastically decreased with valid accuracy.
2002-09-20