Cart3D

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Cart3D

• Cartesian Mesh Generation Tool
• Developed at NASA Ames Research center
• Integrated into med 4.2
• Fully automated
• Succesfully applied for External flow Aerodynamic
  Simulations

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Component Approach

• Geometry model as collection of components
• Each component is a closed faceted surface
• Facets must be conformal
• STL CAD Repair tools to cleanup or Run tetra
• No need to regenerate surface triangulation for
  modified geometry

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Component Approach
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Intersection

• Components are intersected before meshing to form
  a single wetted surface
• Efficient and Robust
• Detects Geometry Degeneracy situations
• Avoids complications in Meshing

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Volume Mesh Generation

• Start Cartesian domain prescribed divisions
• Recursively sub divide cells to high boundary
  curvature
• Permits user specified Adatation
• Unstructured flat data structure
• Max. flexibility cell by cell sub division

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Performance

• Memory usage 14words/cell app. 54MB/1M cell
• Speed 1min/1M Cells
• Linear with number of cells
• Limit 2m locations in each direction

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Examples
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