646 設計支援のためのロバストな流体解析システム

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  • A Robust Fluid Simulation System to support Product Design

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This paper describes the implementation of various boundary conditions using simple immersed boundary method originally proposed by Peskin. The direct forcing technique, extended by Fadlun, is used for the caliculation of the external force in Navier-Stokes equations and has the capability of representation not only for walls but also various types of boundaries. Avoiding the intepolation to achive higher approximation of shape, the present method has a very robust feature. Two examples are demonstrated in this paper, one is flow around a circular cylinder and the other is flow induced by a fan.

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