Determination of computational domain boundaries for viscous flow around two dimensional bodies

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2006

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Basa, Mustafa Mazhar

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Borders of flow field around immersed bodies can be extended to long distances since there are no physical boundaries. In computational practice however, the flow domain must be restricted to a reasonable size by imposing appropriate boundary conditions at the edges of the computational space. In this thesis work, streamlines obtained from potential flow solution in a relatively large spatial domain are utilized to specify the boundaries and boundary conditions for a more restricted computational domain to be used for detailed viscous flow computations. A grid generation code is adopted for generation of unstructured triangular grid systems for domains involving multiple immersed bodies of any shape at arbitrary orientations such as a group of tall buildings in horizontal plane. Finite volume method is used in the solution of Laplace equation for the stream function. A deformation modulus is introduced as a probe parameter to aid locating the viscous flow boundaries. The computer code acts as a preprocessor for viscous flow computations, specifying the computational boundaries, the boundary conditions and generating the computational grid.

Subject Keywords

Hydraulic Engineering.

URI

http://etd.lib.metu.edu.tr/upload/12607878/index.pdf
https://hdl.handle.net/11511/16594

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

M. M. Basa, “Determination of computational domain boundaries for viscous flow around two dimensional bodies,” M.S. - Master of Science, Middle East Technical University, 2006.