Simulation of Laser-Induced Asymmetric Bubble with Lattice Boltzmann Method

Abstract:

In this paper, the Lattice Boltzmann Method is applied to set up the numerical model of cavitations. The surface of the part is introduced into the symmetric bubble model to form the more realistic model called asymmetric bubble. With the help of simulation, no pulsation is detected but it is noticed that the pressure is no longer present uniform distribution for the four virtual surfaces symmetrically set around the bubble. The pressure close to the part’s surface is slightly higher and the velocity gradient is larger than those further away from the solid surface. And the distortion along the flow line is discovered at the end of the solid surface. The asymmetric bubble collapses in a complicated way thanks to the various velocities in different point of the bubble wall. What is more, a micro jet with radius of 10μm is generated which leads to the sharp reduction of momentum of the wall and the increase of the pressure near the bubble wall. According to the simulation, the impact on the work piece peaks at 1.6GPa.

• Periodical: Advanced Materials Research (Volumes 591-593)
• Pages: 806-809
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.591-593.806
• Online since: November 2012
• Authors: Yu Deng, Zhong Ning Guo, Zhi Gang Huang
• Keywords: Laser-Induced Asymmetric Bubble, Lattice Boltzmann Method, Simulation

References

[1] Goto M, Pihosh Y, Kasahara A, et al. Implantation of perylene molecules into glass plates through a water layer using a laser induced molecular Micro-Jet[J]. Japanese Journal of Applied Physics, Part 2: Letters. 2006, 45(33-36): 966-969.

DOI: 10.1143/jjap.45.l966

[2] Noack J, Hammer D X, Noojin G D, et al. Influence of pulse duration on mechanical effects after laser-induced breakdown in water[J]. Journal of Applied Physics. 1998, 83(12): 7488-7495.

DOI: 10.1063/1.367512

[3] Brennen C E. Cavitation and bubble dynamics [J]. Applied Mechanics Reviews. 1995, 48(10): 146.

[4] Bourne N K. On the collapse of cavities[J]. Shock Waves. 2002, 11(6): 447-455.

[5] Brujan E A, Keen G S, Vogel A, et al. The final stage of the collapse of a cavitation bubble close to a rigid boundary[J]. Physics of Fluids. 2002, 14(1): 85-92.

DOI: 10.1063/1.1421102

[6] Ohl C D, Arora M, Dijkink R, et al. Surface cleaning from laser-induced cavitation bubbles[J]. Applied Physics Letters. 2006, 89(7): 074102

DOI: 10.1063/1.2337506

[7] Hellman A N, Rau K R, Yoon H H, et al. Laser-induced mixing in microfluidic channels [J]. Analytical Chemistry. 2007, 79(12): 4484-4492.

DOI: 10.1021/ac070081i

[8] Kumar Pallav and Kornel F. Ehmann. Feasibility of laser induced plasma micro-machining. IFIP Advances in Information and Communication Technology, 2010,315: 73-80

DOI: 10.1007/978-3-642-11598-1_8