CAPRI Cart3D Connector

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CAPRI provides a simple and reliable solution to import native CAD parts and assemblies directly into Cart3D. The watertight geometry is optimized for Cart3D use. Experience greater productivity by minimizing the effort and steps needed to import complex CAD models for analysis.

Cart3D is a high-fidelity inviscid analysis package for conceptual and preliminary aerodynamic design. It allows users to perform automated CFD analysis on complex geometry. Cart3D supports many important NASA projects, as well as other projects in government and industry.

Cart3D requires geometry in the form of triangulated components. Triangulations must be watertight for performing component intersections and cartesian mesh generation. Triangulations with gaps and errors require significant time and effort to be usable for analysis. Complicated models can take days to fix, and the final result may no longer be true to the original geometry.

CAPRI provides direct watertight triangulation of CAD solids with strict criteria on correctness and accuracy. This eliminates inaccuracies and non-value added healing and cleanup steps typically required for preparation of CAD data for meshing. The resolution of the triangulation can be user-defined to meet the analysis requirements. The process to go from CAD to triangulations requires some tuning, but for the most part requires no manual intervention.

There are several flexible approaches to deploy CAPRI into your Cart3D workflow depending on the user's process needs. For more information on CART3D, visit the Cart3D web site.


From my experience, CADnexus CAE Gateway is a unique software primarily because of its direct connection to CAD and overall robustness. I can use an in-house geometry manipulation and triangulation tool, but I find that the time to take something out of CAD and put the final design back into CAD is prohibitive.”

Marian Nemec, Ph.D., ELORET Corporation (NASA Ames Research Center).

Cart3D Design Application

NASA uses CAPRI for CAD-based design optimization of supersonic aircraft. The recent application illustrates a powerful application of CAPRI to perform shape design directly in CAD.

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