E231 Immersed Boundary Method を用いた迎角変化を伴う正方形柱周りの流れ解析

概要

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Numerical Simulation of the airflow in an urban area requires the ability to deal with various shapes of buildings. Considering the difficluty to generate the grids for plural arbitrary geometries, it is reasonable to use the Immersed Boundary Method (IBM) in conjunction with Cartesian grids. However there is no previous research on the applicability of IBM to the the flow field that is sensitive to the separation-reattachment effect, wihch is peculiar to the flow around buildings. Therefore, in this study, we apply IBM to the DNS of the flow field around an inclined square cylinder (a basic building shape) and investigate the accuracy of the simulation for the separation-reattachment effect by comparing the areodynamic properties of a square cylinder with the previous numerical and experimental results.
日本流体力学会の論文
2002-07-23