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Abstract
A novel mesh-generation technique based on local mesh modification procedures is introduced for the generation of unstructured stretched meshes for two-dimensional viscous flows. The mesh is constructed by first establishing a set of equal-distance contours to a reference curve representing solid boundaries and wake centerlines on an existing mesh and then refining the mesh by the use of local mesh modification procedures such as diagonal swapping, node movement, side splitting, and side collapsing. An advancing-front mesh-generation technique is used for generating the initial mesh. The various steps involved in the mesh-generation procedure are addressed in the examples. Results generated reveal that the new technique can produce stretched elements in an efficient and fully automatic manner.
Notes
Address correspondence to Dr. Chung-Ho Liu, Chung Cheng Institute of Technology, Department of Aeronautical Engineering, Ta-Hsi, Tao-Yuan, 33509, Taiwan, Republic of China. E-mail: [email protected].