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Immersed boundary methods

Bandringa, H. (2010) Immersed boundary methods. Master's Thesis / Essay, Mathematics.

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Usually, a body conforming grid is being used for computing the flow around an arbitrary body. This approach requires coordinate transformations and/or complex grid generation. Especially for moving bodies, in every time step a new mesh has to be generated, which requires a lot of computing time. In contrast, an immersed boundary method uses a non body conforming Cartesian grid. In general a body does not align with the grid, so some of the computational cells will be cut. The cut cells can be treated in several ways. These treatments can be globally categorized into a continuous forcing approach, a discrete forcing approach and cut-cell methods. Many different immersed boundary methods have been developed over the years and one of my tasks was to recommend a few of these methods, which could be implemented in the computational fluid dynamics code ComFLOW. Before computing ows in complex geometries, some simple geometries will be used for testing the methods. One of the testing geometries is a channel placed oblique to the grid.

Item Type: Thesis (Master's Thesis / Essay)
Degree programme: Mathematics
Thesis type: Master's Thesis / Essay
Language: English
Date Deposited: 15 Feb 2018 07:44
Last Modified: 15 Feb 2018 07:44

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