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Laminar Flow in a Tube Bundle

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A new meshing feature is present in ADINA 8.1 that enables the user to create a volume mesh from a collection of surface elements making up a closed volume. This is achieved without modifying the surface mesh. This feature is useful when a model is only represented by its external surface data (e.g., data from coordinate measuring machines, or CT scans). There are many potential applications, especially in the automotive and biomedical fields.

 
  
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The example presented above depicts the blood flow through an abdominal aortic aneurysm (a disease where a blood vessel, the aorta in this case, expands to more than twice its normal diameter). The fluid mesh was created from a surface mesh of the blood vessel using this new meshing feature. The animation shows the velocity variation at different sections along the aneurysm.

 

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