http://www.mentor.com/products/mechanical/products/floefd/FloEFD is the ONLY computational fluid dynamics analysis tool that is truly embedded into major MCAD systems. These include Pro/ENGINEER, CATIA, Siemens NX and SolidWorks; and tight integration with Inventor and SolidEdge. FloEFD is a full-featured 3D fluid flow, heat transfer analysis package that is both fast to learn and fast to use because it doesn’t come with the numerical complexity and meshing overheads of traditional high-end CFD.
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Preferred for SolidWorks. Can live with a Pro/E or Catia if nothing else is available.