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Practical Meshing Benefits of a Digital Geometry Approach

Verdicchio, John A., Albert A. J. Demargne, Bill N. Dawes

Posters, 25th International Meshing Roundtable, Sandia National Laboratories, September 26-30 2016


25th International Meshing Roundtable
Washington DC, U.S.A.
September 26-30, 2016

John A. Verdicchio, Cambridge Flow Solutions Ltd, GB,
Albert A. J. Demargne, Cambridge Flow Solutions Ltd, GB,
Bill N. Dawes, Cambridge University, GB,

Poster Abstract
Cambridge Flow Solution’s approach to geometry is based on an octree discretization of geometrical surfaces coupled to a distance field managed through level set technology[1] – with the distance field carrying the information as to the location of the actual geometry. This approach has a number of advantages. Firstly the geometry can then be partitioned and processed by several processors in parallel, allowing it to be carried through the actual simulation process, rather than discarded after discretization as is commonly the case. Secondly, the approach combines an inherent tolerance to CAD defects with the ability to merge and modify geometry within the meshing environment. This includes the ability to merge CAD of vastly different quality and origin, to modify/edit models and to perform Boolean operations on these models. The poster illustrates these industrially-significant advantages on a practical application: the meshing of the White House. Tolerance to CAD defects is illustrated, together with the ability to modify geometry within the meshing environment. Boolean addition / subtraction operations are performed on the model, by inserting, scaling and displacing manequins at several locations.

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