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L. L. Ferrás 1 , J. M. Nóbrega 1 , F . T. Pinho 2 , O. S.Carneiro 1

On The Effect of THE Wall Slip BOUNDARY Condition. L. L. Ferrás 1 , J. M. Nóbrega 1 , F . T. Pinho 2 , O. S.Carneiro 1. 1 IPC – Institute for Polymers and Composites , University of Minho , Campus de Azurém , 4800-058 Guimarães, Portugal

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L. L. Ferrás 1 , J. M. Nóbrega 1 , F . T. Pinho 2 , O. S.Carneiro 1

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  1. On The Effect of THE Wall Slip BOUNDARY Condition L. L. Ferrás1, J. M. Nóbrega1 , F. T. Pinho 2, O. S.Carneiro1 1IPC – Institute for PolymersandComposites, Universityof Minho, Campus de Azurém, 4800-058 Guimarães, Portugal 2Universityof Porto, Centro de Estudos de Fenómenos de Transporte, Faculdade de Engenharia, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal IPC - Institute for Polymers and Composites Universityof Minho Portugal

  2. •Computational fluid dynamics (Cfd) •extrusion •Friction - slip •Case study I 4:1 contraction CFD Extrusion Friction - Slip •Case study II extrusion die Case Study I Case Study II

  3. CFD Extrusion Friction - Slip Case Study I Case Study II

  4. CFD Extrusion Friction - Slip Case Study I Case Study II

  5. Equations: Conservation of Mass: Conservation of Momentum: Constitutive Equation (simplified PTT): CFD Extrusion Friction - Slip Case Study I Case Study II Linear Exponential no-slip boundary condition

  6. CFD Extrusion Friction - Slip Case Study I Case Study II

  7. CFD Extrusion Friction - Slip Case Study I Case Study II

  8. numerical CFD Extrusion Friction - Slip Case Study I Case Study II Experimental MA Alves,FTPinho, PJ Oliveira. Viscoelastic flow in a 3D square/square contraction: visualizations and simulations. Journal of Rheology 52(6) (2008) 1347-1368

  9. numerical CFD Extrusion Friction - Slip Case Study I Case Study II AM Afonso, PJ Oliveira, FT Pinho, MA Alves, Dynamics of high-Deborah-number entry flows - A numerical study. Journal of Fluid Mechanics 677 (2011) 277-304

  10. Extrusion: polymer hopper extrusiondie melt water CFD Extrusion Friction - Slip Case Study I Case Study II coolingsystem screw bandheaters screw drive motor

  11. Extrusion dIE: CFD Extrusion Friction - Slip Case Study I Case Study II

  12. Friction: solids CFD Extrusion Friction - Slip Case Study I Case Study II

  13. Friction: solids CFD Extrusion Friction - Slip Case Study I Case Study II

  14. Friction: Fluids CFD Extrusion Friction - Slip Case Study I Case Study II

  15. Friction: Fluids solid liquid CFD Surface roughness Extrusion wetting ? Friction - Slip Case Study I Case Study II Shear rate Molecular interaction pressure

  16. CFD Extrusion Friction - Slip Case Study I Case Study II Viscoelastic fluid water

  17. CFD Extrusion Friction - Slip Case Study I Case Study II tangent stress vector slipcoefficient slipvelocity

  18. Equations: Conservation of Mass: Conservation of Momentum: Constitutive Equation (simplified PTT): CFD Extrusion Friction - Slip Case Study I Case Study II slip boundary condition

  19. No • Remove theboundaryvelocityfromthemomentumequation CFD Extrusion Friction - Slip Case Study I Case Study II • Compute velocityattheBoundary

  20. •Case study I 4:1 contraction CFD Extrusion Friction - Slip Case Study I Case Study II

  21. A CFD Extrusion Friction - Slip Case Study I Case Study II

  22. B CFD Extrusion Friction - Slip Case Study I Case Study II

  23. Ba CFD Extrusion Friction - Slip Case Study I Case Study II

  24. Bb CFD Extrusion Friction - Slip Case Study I Case Study II

  25. Bc CFD Extrusion Friction - Slip Case Study I Case Study II

  26. Bd CFD Extrusion Friction - Slip Case Study I Case Study II

  27. C CFD Extrusion Friction - Slip Case Study I Case Study II

  28. Ca CFD Extrusion Friction - Slip Case Study I Case Study II

  29. Caa CFD Extrusion Friction - Slip Case Study I Case Study II

  30. Cab CFD Extrusion Friction - Slip Case Study I Case Study II

  31. Cac CFD Extrusion Friction - Slip Case Study I Case Study II

  32. Cad CFD Extrusion Friction - Slip Case Study I Case Study II

  33. Cb CFD Extrusion Friction - Slip Case Study I Case Study II

  34. Cc CFD Extrusion Friction - Slip Case Study I Case Study II

  35. Cd CFD Extrusion Friction - Slip Case Study I Case Study II

  36. D CFD Extrusion Friction - Slip Case Study I Case Study II

  37. Da CFD Extrusion Friction - Slip Case Study I Case Study II

  38. Db CFD Extrusion Friction - Slip Case Study I Case Study II

  39. Dc CFD Extrusion Friction - Slip Case Study I Case Study II

  40. Dd CFD Extrusion Friction - Slip Case Study I Case Study II

  41. E CFD Extrusion Friction - Slip Case Study I Case Study II

  42. Ea CFD Extrusion Friction - Slip Case Study I Case Study II

  43. Eb CFD Extrusion Friction - Slip Case Study I Case Study II

  44. Ed CFD Extrusion Friction - Slip Case Study I Case Study II

  45. F CFD Extrusion Friction - Slip Case Study I Case Study II

  46. Fa CFD Extrusion Friction - Slip Case Study I Case Study II

  47. Fb CFD Extrusion Friction - Slip Case Study I Case Study II

  48. Fc CFD Extrusion Friction - Slip Case Study I Case Study II

  49. Fd CFD Extrusion Friction - Slip Case Study I Case Study II

  50. G CFD Extrusion Friction - Slip Case Study I Case Study II

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