C321 Ho : YAG レーザー誘起液体ジェットに随伴する衝撃波

概要

論文の詳細を見る
Although liquid jet formation was caused after irradiation of pulsed Ho : YAG laser within tubular structure (brass tube) under water, shock wave is also generated. These phenomena are considered to be result of rapid expansion and oscillation of laser-induced and vortex-cavitation bubble. To apply this mechanism on a shock-wave generator, the presence of liquid jet should be excluded. Therefore, we have prepared a tubular water reservoir as well as latex diaphragm ahead of the brass tube to avoid the effect of liquid jet, and investigated whether shock wave propagated through the diaphragm. To investigate the phenomenon after application of diaphragm, visualization by high-speed photography and shadowgraphy, and measurement of pressure were conducted. Shock wave successfully propagated through the diaphragm. Maximum overpressure of shock wave was decreased to 5 MPa due to the application of diaphragm
日本流体力学会の論文
2002-07-23