2133 実験風洞と数値解析を統合したハイブリッド風洞に関する基礎的研究 : カルマン渦列の解析

概要

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This report proposes a new concept of "Hybrid Wind Tunnel". The basic idea of this facility is an integration of experimental measurement and computer simulation for general flow related problems. A general structure of the equipment is first explained and a possible application for a simple unsteady flow problem is then discussed. The problem treated in this work is well-known flow field as Karman vortex street in a wake of a column. As the first step, a flow velocity component is estimated in off-line operation of the hybrid wind tunnel with feedback of the measurement pressure data on the column wall. Comparing the estimated data with measurement, the estimation performance of hybrid wind tunnel is investigated. As the results, even if its feedback scheme is tentative, it is shown that the estimated pressure and velocity is close to the measured one with its fluctuation and phase.
2000-07-31