An Improved Hybrid Cartesian/Immersed Boundary Method for Flow Simulation with Moving Boundaries

Autor:	Qiushi Li, Guanting Su, Mengzong Zheng
Rok vydání:	2021
Předmět:	Physics History Flow (mathematics) Incompressible flow law Mathematical analysis Finite difference method Cartesian coordinate system Immersed boundary method Computer Science Applications Education Regular grid law.invention
Zdroj:	Journal of Physics: Conference Series. 1985:012077
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/1985/1/012077
Popis:	To simulate flow problems with moving fluid-solid interfaces, a boundary treatment technique based on a hybrid Cartesian/immersed boundary method is presented. In the vicinity of the immersed boundary, a forcing term is added into the governing flow equations to modify the discretization scheme for the viscous term during its spatial discretization. Addition of such a term enforces desired boundary condition on the immersed boundary. A one-dimensional linear interpolation scheme is used to obtained required information for the modified discretization scheme when dealing with a moving boundary. The present method is essentially second-order accurate and can obtain results that are in good agreement with benchmark references when simulating the flow induced by the in-line oscillation of a circular cylinder.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dae2acd24e7488c77cf0cd5cd7981925 https://doi.org/10.1088/1742-6596/1985/1/012077 Zobrazit plný text záznamu