1998-02-01

Novel CFD Techniques For In-Cylinder Flows On Tetrahedral Grids 980138

An innovative approach for computing in-cylinder flowfields on tetrahedral grids is developed and demonstrated. The primary focus of the preliminary work presented in this paper is the development of an efficient mesh motion scheme for realistic engine geometries. An automated cell layering technique has been devised which embeds/deletes layers of tetrahedral cells as the cylinder flow domain expands/shrinks. The ability to compute in-cylinder flows using this new “multi-zone” concept is demonstrated for a twin-valve gasoline engine.

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