Hi @lkirit2000
Autodesk does not have a product that will analyze the flow of molten metal and show voids.
My only suggestion is to work with the casting manufacturer and use their expertise.
John
John Holtz, P.E. Global Product Support
Autodesk, Inc. If not provided already, be sure to indicate the version of Inventor Nastran you are using!"The knowledge you seek is at knowledge.autodesk.com" - Confucius 😉