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Computer Aided Thermal Fluid Analysis Lecture 6

Computer Aided Thermal Fluid Analysis Lecture 6. Dr. Ming-Jyh Chern ME NTUST. Road Map for Today. Importing mesh data from other systems Exporting mesh data Mesh structure Mesh operation User Guide Chapter 4. Importing Mesh Data from Other System.

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Computer Aided Thermal Fluid Analysis Lecture 6

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  1. Computer Aided Thermal Fluid AnalysisLecture 6 Dr. Ming-Jyh Chern ME NTUST

  2. Road Map for Today • Importing mesh data from other systems • Exporting mesh data • Mesh structure • Mesh operation • User Guide Chapter 4

  3. Importing Mesh Data from Other System • STAR-CD can use mesh files generated by other CAD/CAE softwares. • Acceptable CAD/CAE files: • SAMM • ICEM CFD • IDEAS • ANSYS • PATRAN • NASTRAN • PLOT3D

  4. How to import mesh files in STAR-CD • Using the “Import Grids” STAR GUIde panel. • Surface data are imported using the “Import CAD/Surface Information”

  5. Exporting Mesh Data • Prostar can export mesh data to other CAD/CAE. • Types of Prostar provides: • ANSYS • PATRAN • NASTRAN • IDEAS • ENSIGHT • FIELDVIEW

  6. How to export mesh data in Prostar • Using the “Export Grids” STAR GUIde panel.

  7. Mesh Connectivities • When we use multi-block method to construct mesh, there are connection problems appearing between blocks. • Regular connectivity • Integral connectivity • Arbitrary connectivity

  8. Regular Connectivity • Discontinuities must be removed by merging coincident vertices at the interfaces between adjacent blocks. • One-to-one connection.

  9. Couple Generation • Tools>Couple Tool • Manually - only to integral couples • Automatically – to integral matching or arbitrary matching

  10. Manual Coupling

  11. Automatic Coupling

  12. Usage of COUPLE SET • Integral or Arbitrary

  13. Couple - Integral

  14. Couple - Integral

  15. Couple - Integral

  16. Integral Connectivity

  17. Couple-Arbitrary

  18. Couple-Arbitrary

  19. Couple-Arbitrary

  20. Arbitrary connectivity

  21. Arbitrary connectivity

  22. Arbitrary connectivity

  23. Arbitrary connectivity

  24. Homework 3 • Purpose: Practice the usages of block and couple. • Design a 3-D irregular block and mesh the block. An orthogonaliser must be used for the block. • Design a case which includes two cylindrical blocks to use integral couple. • Design a case, which includes two cylindrical blocks perpendicular to each other, to use arbitrary couple. • Due date: 24 April, 2006.

  25. Mesh and Geometry Checking

  26. Macroscopic Checking

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