Data processing: structural design – modeling – simulation – and em – Simulating nonelectrical device or system
Reexamination Certificate
2011-08-30
2011-08-30
Proctor, Jason (Department: 2123)
Data processing: structural design, modeling, simulation, and em
Simulating nonelectrical device or system
C703S001000, C703S009000
Reexamination Certificate
active
08010326
ABSTRACT:
Method for forming a fixed geometric grid for a fluid dynamics system multi-cell computer model, the system having one or more surfaces, includes representing the system surfaces by an array of contiguous polygons. The method also includes creating a single model cell that encompasses the entire system and assigning all the surface polygons to the single model cell. The method further includes subdividing at least the portion of the single model cell encompassing the surface polygon array, including subdividing all intersected assigned polygons, using one or more subdividing planes. The method still further includes reassigning the surface polygons to respective subdivided cells resulting from the subdividing step, identifying those subdivided cells having two or more surface polygons from a common system surface, and calculating effective common boundary areas and normal vectors for those cells. The method also includes treating “split” cells and “sliver” cells. Apparatus for automatically forming a fixed geometric grid includes a digital computer programmed with a CFD program having software to implement the disclosed method.
REFERENCES:
patent: 5877777 (1999-03-01), Colwell
patent: 5946479 (1999-08-01), Sakaguchi et al.
patent: 6271856 (2001-08-01), Krishnamurthy
patent: 6356860 (2002-03-01), Barnette
patent: 6959269 (2005-10-01), Welterlen
patent: 2004/0167757 (2004-08-01), Struijs
patent: 2005/0128195 (2005-06-01), Houston et al.
patent: 2005/0182603 (2005-08-01), Freitas et al.
patent: 2005/0246110 (2005-11-01), Van Dam et al.
patent: 2005/0253854 (2005-11-01), Lischinski et al.
patent: 2006/0015306 (2006-01-01), Chow
patent: 2006/0089803 (2006-04-01), Lei et al.
patent: 2006/0271297 (2006-11-01), Repelli et al.
patent: 2006/0271888 (2006-11-01), Meuris et al.
patent: 2007/0038423 (2007-02-01), Froning et al.
patent: 0339272 (1989-11-01), None
patent: 1299463 (2002-08-01), None
patent: 1385103 (2004-01-01), None
patent: WO 2004/061723 (2004-07-01), None
Su-Jin Kim et al., “Offset Triangular Mesh Using the Multiple Normal Vectors of a Vertex”, 2004, Computer-Aided Design and Applications, vol. 1, pp. 285-291.
John P. Morrison et al., An Investigation into Applicability of Distributed FPGAs to High-Performance Computing 277-294 (1994) Department of Computer Science, St. Francis Xavier University, Antigonish, Nova Scotia, Canada; Department of Computer Software, University of Aziu-Wakamatsu-Shi, Japan.
Monorchio et al., A Novel Subgridding Scheme Based on a Combination of the Finite Element and Finite-Difference Time-Domain Methods, IEEE Transactions on Antennas and Propagation, vol. 46, No. 9, Sep. 1998.
Verzico, Roberto, “Large Eddy Simulation in Complex Geometric Configurations Using Boundary Body Forces,” AIAA Journal, Mar. 2000, pp. 427-433, vol. 38, USA.
Fadlun, E.A. et al., “Combined Immersed-Boundary Finite-Difference Methods for Three-Dimensional Complex Flow Simulations,” Journal of Computation Physics, Jun. 10, 2000, pp. 35-60. vol. 161, USA.
Peskin, Charles S., “Flow Patterns Around Heart Valves: A Numerical Method,” Journal of Computational Physics, Oct. 10, 1972, pp. 252-271, vol. 10, USA.
Berger et al., “Aspects (and Aspect Ratios) of Cartesian Mesh Methods,” Proceedings of the 16thInternational Conference on Numerical Methods in Fluid Dynamics, to appear in “Lecture Notes in Physics,” Jul. 6-10, 1998, pp. 1-12, Arcachon, France.
Charlton, Eric Frederick, “An Octree Solution to Conservation-laws over Arbitrary Regions (OSCAR) with Applications to Aircraft Aerodynamics,” Aerospace Engineering and Scientific Computing in The University of Michigan (dissertation), 1997, pp. 1-220, USA.
Richards et al., “Engine Intake Simulations Using an Immersed Boundary Technique,” Society of Automotive Engineers, Inc., Unpublished, pp. 1-12, USA.
Richards et al., “On the Use of the Immersed Boundary Method for Engine Modeling,” International Multidimensional Engine Modeling Users Group (Meeting), pp. 1-6, Mar. 2003.
Pomraning Eric Douglas
Richards Keith Jared
Senecal Peter Kelly
Yang Tianliang
Caterpillar Inc.
Convergent Thinking LLC
Finnegan Henderson Farabow Garrett & Dunner LLP
Proctor Jason
LandOfFree
Method and apparatus for automated grid formation in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for automated grid formation in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for automated grid formation in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2758992