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Extrusion of Complex Surface Meshes Utilizing Face Offsetting and Mean Curvature SmoothingGrids for three-dimensional Computational Fluid Dynamics problems frequently require a prismatic layer of cells, typically extruded in the off-body direction from a two-dimensional surface mesh to properly resolve boundary layers. When the surface geometry is complex, the extrusion process can fail, resulting in the physical boundary layer being thicker than the prismatic layer, leading to under-resolved boundary layers. To address the shortcomings of existing grid generation tools, a new tool has been developed as part of the Mesh Tools suite, that is capable of extruding complex surface meshes. The new tool uses a face offsetting method to preserve surface curvature and a mean curvature smoothing algorithm to prevent the cells from self-intersecting in concave regions. Testing of the new tool found that not only were complex surface meshes able to be extruded to the desired thickness, but extrusion of simple surface meshes was also improved, due to the face offsetting method.
Document ID
20190000067
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
McCloud, Peter L.
(Jacobs Technology, Inc. Houston, TX, United States)
Date Acquired
January 14, 2019
Publication Date
January 7, 2019
Subject Category
Numerical Analysis
Fluid Mechanics And Thermodynamics
Report/Patent Number
JSC-E-DAA-TN63010
Meeting Information
Meeting: AIAA SciTech Forum 2019
Location: San Diego, CA
Country: United States
Start Date: January 7, 2019
End Date: January 11, 2019
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
CONTRACT_GRANT: NNJ13HA01C
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
mesh extrusion
grid generation
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