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Grid generation research at OSUIn the last two years, effort was concentrated on: (1) surface modeling; (2) surface grid generation; and (3) 3-D flow space grid generation. The surface modeling shares the same objectives as the surface modeling in computer aided design (CAD), so software available in CAD can in principle be used for solid modeling. Unfortunately, however, the CAD software cannot be easily used in practice for grid generation purposes, because they are not designed to provide appropriate data base for grid generation. Therefore, we started developing a generalized surface modeling software from scratch, that provides the data base for the surface grid generation. Generating surface grid is an important step in generating a 3-D space for flow space. To generate a surface grid on a given surface representation, we developed a unique algorithm that works on any non-smooth surfaces. Once the surface grid is generated, a 3-D space can be generated. For this purpose, we also developed a new algorithm, which is a hybrid of the hyperbolic and the elliptic grid generation methods. With this hybrid method, orthogonality of the grid near the solid boundary can be easily achieved without introducing empirical fudge factors. Work to develop 2-D and 3-D grids for turbomachinery blade geometries was performed, and as an extension of this research we are planning to develop an adaptive grid procedure with an interactive grid environment.
Document ID
19920016480
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nakamura, S.
(Ohio State Univ. Columbus, OH, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1992
Publication Information
Publication: NASA. Lewis Research Center, Workshop on Grid Generation and Related Areas
Subject Category
Aerodynamics
Accession Number
92N25723
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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