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Jet properties and mixing chamber flow in a high-pressure abrasive slurry jet: part II—machining rates and CFD modeling

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Abstract

Part I of this two-part paper presented mixing chamber conditions and jet characteristics in a high-pressure abrasive slurry jet micro-machining (HASJM) system. The present paper describes the modeling of the slurry entrainment process within the mixing chamber and mixing tube of the nozzle using computational fluid dynamics (CFD) and shows how the results can be used to explain and predict machining performance. The slurry flow rate into the mixing chamber was found to have a large impact on the performance of the jet due to differences in the momentum of the high-velocity water and low-velocity slurry. The erosive efficacy of the jet was assessed by machining channels and blind holes in aluminum 6061-T6. Differences in the centerline erosion rates of holes and channels for a given jet showed clear evidence of incubation and stagnation zone effects. The CFD models simulated various slurry flow rates entering the mixing chamber as a result of the low pressure created by the central high-velocity jet of water. They predicted correctly an experimentally observed flooding condition in which slurry completely filled the mixing chamber and mixing tube. The models could also identify the transient conditions leading to the onset of this flooding as the chamber first began to fill, which could not be identified experimentally. Flooding was found to significantly reduce the jet velocity, thus diminishing its erosive efficacy. The models also identified the operating conditions within the mixing chamber that produced boiling due to the low internal pressure generated by the central high-velocity jet of water. This boiling condition was found in part I to result in a wider jet exiting the mixing tube.

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References

  1. Teti M, Papini M, Spelt JK, (submitted). Jet properties and mixing-chamber flow in a high-pressure abrasive slurry jet: part I—measurement of jet and chamber conditions. Int J Adv Manuf Technol

  2. Nguyen T, Pang K, Wang J (2009) A preliminary study of the erosion process in micro-machining of glasses with a low pressure slurry jet. Key Eng Mater 389:375–380

    Google Scholar 

  3. Pang K, Nguyen T, Fan JM, Wang J (2010) Machining of micro-channels on brittle glass using an abrasive slurry jet. Key Eng Mater 443:639–644

    Article  Google Scholar 

  4. Wang J, Nguyan T, Pang K (2009) Mechanism of microhole formation on glasses by an abrasive slurry jet. J Appl Phys 105(4):044906

    Article  Google Scholar 

  5. Hashish M (1993) Performance of high-pressure abrasive suspension jet system. Am Soc Mech Eng 67:199–207

    Google Scholar 

  6. Liu HT (1998). Near-net shaping of optical surfaces with abrasive suspension jets. 14th Int. conference on jetting technology, Brugge, 285–294

  7. Haghbin N, Ahmadzadeh F, Spelt JK, Papini M (2016) High pressure abrasive slurry jet micro-machining using slurry entrainment. Int J Adv Manuf Technol 84(5–8):1031–1043

    Google Scholar 

  8. Narayanan C, Balz R, Weiss DA, Heiniger K (2013) Modelling of abrasive particle energy in water jet machining. J Mater Process Technol 213(12):2201–2210

    Article  Google Scholar 

  9. Momber AW (2001) Energy transfer during the mixing of air and solid particles into a high-speed waterjet: an impact-force study. Exp Thermal Fluid Sci 25(1):31–41

    Article  Google Scholar 

  10. Narayanan C, Caviezel D, Lakehal D (2016). Optimization of abrasive waterjet nozzle design for precision and reduced wear using compressible multiphase CFD modelling. Proc. 23rd int. conference on water jetting, Seattle, USA

  11. Prisco U, D'Onofrio MC (2008) Three-dimensional CFD simulation of two-phase flow inside the abrasive water jet cutting head. Int J Comp Meth Eng Sci Mech 9(5):300–319

    Article  MATH  Google Scholar 

  12. Ahmed DH, Siores E, Naser J, Chen FL (2001). Numerical simulation of abrasive water jet for different taper inlet angles, 14th Australasian fluid mech. conference, 645–648

  13. Haghbin N, Ahmadzadeh F, Spelt JK, Papini M (2015) Effect of entrained air in abrasive water jet micro-machining: reduction of channel width and waviness using slurry entrainment. Wear 344-345:99–109

    Article  Google Scholar 

  14. Yerramareddy S, Bahadur S (1991) Effect of operational variables, microstructure and mechanical properties on the erosion of Ti-6Al-4V. Wear 142(2):253–263

    Article  Google Scholar 

  15. Sookhak Lari MR, Papini M (2016) Inverse methods to determine scan velocity required to gradient etch three-dimensional textured features using abrasive jet micromachining: part I—modelling. Precis Eng 45:272–284

    Article  Google Scholar 

  16. ANSYS fluent 15.0 theory guide. ANSYS, Inc., (2015, Canonsburg, PA, USA

  17. Fowler G, Pashby IR, Shipway PH (2009) The effect of particle hardness and shape when abrasive water jet milling titanium alloy Ti6Al4V. Wear 266(7–8):613–620

    Article  Google Scholar 

  18. Schwartzentruber J, Papini M (2014) Abrasive waterjet micro-piercing of borosilicate glass. J Mater Process Technol 219:143–154

    Article  Google Scholar 

  19. Wang J (2009) Particle velocity models for ultra-high pressure abrasive waterjets. J Mater Process Technol 209(9):4573–4577

    Article  Google Scholar 

  20. White F (2011). Fluid mechanics (seventh edition). McGraw Hill

  21. Sheldon GL, Kanhere A (1972) An investigation of impingement erosion using single particles. Wear 21:195–209

    Article  Google Scholar 

  22. Kowsari K, Nouraei H, James DF, Spelt JK, Papini M (2014) Abrasive slurry jet micro-machining of holes in brittle and ductile materials. J Mater Process Technol 214(9):1909–1920

    Article  Google Scholar 

  23. Haghbin N, Spelt JK, Papini M (2015) Abrasive waterjet micro-machining of channels in metals: comparison between machining in air and submerged in water. Int J Mach Tools Manuf 88:108–117

    Article  Google Scholar 

  24. Hutchings IM (1981) A model for the erosion of metals by spherical particles at normal incidence. Wear 70(3):269–281

    Article  Google Scholar 

  25. Nouraei H, Kowsari K, Papini M, Spelt JK (2015) Operating parameters to minimize feature size in abrasive slurry jet micro-machining. Precis Eng 2016(44):109–123

    Google Scholar 

Download references

Acknowledgements

The authors acknowledge the financial support from the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Canada Research Chairs Program. CFD computations were performed on the general purpose cluster (GPC) supercomputer at the SciNet HPC Consortium. SciNet is funded by the Canada Foundation for Innovation under the auspices of Compute Canada, the Government of Ontario, Ontario Research Fund—Research Excellence, and the University of Toronto.

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Correspondence to Jan K. Spelt or Marcello Papini.

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Teti, M., Spelt, J.K. & Papini, M. Jet properties and mixing chamber flow in a high-pressure abrasive slurry jet: part II—machining rates and CFD modeling. Int J Adv Manuf Technol 101, 3021–3034 (2019). https://doi.org/10.1007/s00170-018-3041-3

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