[9a-W631-1~12] 3.7 Laser processing

[9a-W631-12] Numerical simulation of femtosecond laser-induced cavitation bubble generation toward elucidation of impulse generation process induced by snapping shrimp

〇Masaya Yamamoto¹, Shigeto Nakamura¹, Kazuki Hiro¹, Masanori Yao¹, Ryohei Yasukuni², Yoichiroh Hosokawa², Hiroshi Fukuoka¹ (1.NIT.Nara College, 2.NAIST.)

Keywords:cavitation, laser, computational fluid dynamics

This paper studies a simulation method for reproducing cavitation. In addition, we examined the influence that provided to cavitation by initial pressure of cavitation bubble. The fundamental equations are the two dimensional axial symmetry compressible Navier-Stokes equations. The interaction of the liquid and gas is handled with the Volume of Fluid method. Initial conditions were set up maximum radius and pressure based. The result was on the order of agreement with the recent results drawn from studies of Rayleigh-Plesset equation. Increasing initial pressure, radius of contraction bubble shows Increasing.