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Modeling and analysis of the visualized gas-assisted laser cutting flow from both conical and supersonic nozzles

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Abstract

A coaxial high-pressure gas jet is normally used to assist and enhance laser cutting quality and capability. However, the gas nozzles are mostly of conical type causing the deterioration of the dynamic characteristics of the exit jet. In this research, the effect of both nozzle type and nozzle dimensions on the uniformity and behavior of the exit jet has been investigated. A total of three different supersonic nozzles have been designed in accordance to gas dynamics theory and manufactured using wire electrical discharge machining (WEDM). The exit jet patterns from these supersonic nozzles and a reference conical nozzle have been numerically modeled and compared with the experimental observations made through Schlieren visualization. The experimental results are found to match and hence validate the simulations. It is concluded that the exit jet from the supersonic nozzle is marked by uniformity, better dynamic characteristics, and longer effective exit jet length compared with conical nozzle.

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References

  1. Steen WM, Mazumder J (2010) Laser material processing, 4th edn. Springer, London

    Book  Google Scholar 

  2. Dowden J (2008) The theory of laser materials processing. Springer

  3. Andersson B, Andersson R, Hakansson L, Mikael M, Sudiyo R, Van Wachem B (2012) Computional fluid dynamics for engineers, 1st edn. Cambridge University Press, United States of America by Cambridge University Press, New York

    MATH  Google Scholar 

  4. Cantwell BJ (2007) Fundamentals of compressible flow, 3rd edn. Stanford University

  5. Man HC, Duan J, Yue TM (1998) Dynamic characteristics of gas jets from subsonic and supersonic nozzles for high pressure gas laser cutting. Opt Laser Technol 30(8):497–509

    Article  Google Scholar 

  6. Man HC, Duan J, Yue TM (1999) Analysis of the dynamic characteristics of gas flow inside a laser cut kerf under high cut-assist gas pressure. J Phys D: Appl Phys 32(13):1469–1477

    Article  Google Scholar 

  7. Man HC, Duan J, Yue TM (1997) Design and characteristic analysis of supersonic nozzles for high gas pressure laser cutting. J Mater Process Technol 63(1-3):217–222

    Article  Google Scholar 

  8. Tseng C-S, Wang C-C, Chen C-M (2013) A visual observation of the air flow pattern for the high speed nozzle applicable to high power laser cutting and welding. Int Commun Heat Mass Transfer 49:49–54

    Article  Google Scholar 

  9. Zhang C, Wen P, Yuan Y, Fan X (2016) Evaluation and optimal design of supersonic nozzle for laser-assisted oxygen cutting of thick steel sections. Int J Adv Manuf Technol 86(5–8):1243–1251

    Article  Google Scholar 

  10. Zhou Y, Kong J, Zhang J (2017) Study on the role of supersonic nozzle in fiber laser cutting of stainless steel. Mater Sci Appl 08(01):85–93

    Google Scholar 

  11. Sundar M, Nath AK, Bandyopadhyay DK, Chaudhuri SP, Dey PK, Misra D (2009) Effect of process parameters on the cutting quality in lasox cutting of mild steel. Int J Adv Manuf Technol 40(9–10):865–874

    Article  Google Scholar 

  12. John Stavridis, Alexios Papacharalampopoulos, Panagiotis Stavropoulos (2018) Quality assessment in laser welding: a critical review. The International Journal of Advanced Manufacturing Technology 94(5–8):1825–1847

    Article  Google Scholar 

  13. Xiaojun S, Jun H, Jingwen L, Zhzng Z (2011) Simulation and experiment on standoff distance affecting gas flow in laser cutting. Appl Math Model 35(2):895–902

    Article  Google Scholar 

  14. Lin J, Mai C-C (2002) Flow structures around an inclined substrate subjected to a supersonic impinging jet in laser cutting. Opt Laser Technol 34(6):479–486

    Article  Google Scholar 

  15. Guo S, Jun H, Lei L, Yao Z (2009) Numerical analysis of supersonic gas-dynamic characteristic in laser cutting. Opt Lasers Eng 47(1):103–110

    Article  Google Scholar 

  16. Jun H, Guo S, Lei L, Yao Z (2008) Characteristic analysis of supersonic impinging jet in laser machining. Int J Adv Manuf Technol 39(7–8):716–724

    Article  Google Scholar 

  17. Chen K, Yao L, Modi V (2001) Gas dynamic effects on laser cut quality. J Manuf Process 3(1):38–49

    Article  Google Scholar 

  18. Chen K, Lawrence Yao Y, Modi V (2000) Gas jet–workpiece interactions in laser machining. J Manuf Sci Eng 122(3):429

    Article  Google Scholar 

  19. Marimuthu S, Nath AK, Dey PK, Misra D, Bandyopadhyay DK, Chaudhuri SP (2017) Design and evaluation of high-pressure nozzle assembly for laser cutting of thick carbon steel. Int J Adv Manuf Technol 92 (1–4):15–24

    Article  Google Scholar 

  20. Darwish M, Orazi L, Angeli D (2019) Simulation and analysis of the jet flow patterns from supersonic nozzles of laser cutting using OpenFOAM. The International Journal of Advanced Manufacturing Technology

  21. Mohamed Darwish, Libor Mrňa, Leonardo Orazi, Barbara Reggiani (2019) Numerical modeling and Schlieren visualization of the gas-assisted laser cutting under various operating stagnation pressures. International Journal of Heat and Mass Transfer, 118965

    Article  Google Scholar 

  22. Leonardo Orazi, Mohamed Darwish, Barbara Reggiani (2019) Investigation on the Inert Gas-Assisted Laser Cutting Performances and Quality Using Supersonic Nozzles. Metals 9(12):1257

    Article  Google Scholar 

  23. AMES Staff (1953) NACA report (1135) equations, tables and charts for compressible flow. Technical Report 1135 National Advisory Committee for Aeronautics

  24. Greenshields C (2017) OpenFOAM User Guide

  25. Greenshields C (2015) OpenFOAM Programmers Guide

  26. Pope S (2013) Turbulent flows, 10th edn. Cambridge University Press

  27. Settles GS (1999) Schlieren and Shadowgraph techniques: visualizing phenomena in transparent media. In: Schlieren and Shadowgraph imaging in the great outdoors, experimental fluid mechanics. Springer, Honolulu

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Authors and Affiliations

  1. DISMI, Department of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, Reggio Emilia, Italy

    Mohamed Darwish, Leonardo Orazi & Barbara Reggiani

  2. Institute of Scientific Instruments, ISI, Brno, Czech Republic

    Libor Mrňa

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  1. Mohamed Darwish
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  2. Libor Mrňa
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  3. Leonardo Orazi
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  4. Barbara Reggiani
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Correspondence to Mohamed Darwish.

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Darwish, M., Mrňa, L., Orazi, L. et al. Modeling and analysis of the visualized gas-assisted laser cutting flow from both conical and supersonic nozzles. Int J Adv Manuf Technol 106, 4635–4644 (2020). https://doi.org/10.1007/s00170-019-04915-4

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  • DOI: https://doi.org/10.1007/s00170-019-04915-4

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