强激光与粒子束2009，Vol.21Issue(7)：998-1002,5.
液体性质与吸收能量对激光致声特性的影响
Influences of liquids properties and absorbed energy on laser induced expanding sound
摘要
Abstract
Influences of the transparent liquids' bulk modulus,dynamic-viscosity coefficient and the absorbed laser pulse energy in the breakdown region on the peak pressure,the sound energy and the dominant frequency of the laser induced expanding sound are analyzed.An experimental system is developed for producing and measuring laser induced expanding sound in three transparent liquids-distilled water,alcohol and glycerin.The parameters of laser induced expanding sound are calculated within certain ranges of bulk modulus (0.2～7.0 GPa),dynamic-viscosity coefficient (0.001～30.000 Pa·s) and absorbed laser pulse energy (10～400 mJ).The results of theoretical calculation and experiment is as follows:Firstly,the dominant frequency,the peak sound pressure and the sound energy increase as the bulk modulus increases.Secondly,the peak pressure and the sound energy decrease as the dynmic-viscosity coefficient increases.Thirdly,the peak sound pressure and the energy increase as the absorbed laser pulse energy increases.Fourthly,the dominant frequency changes little as the dynamic-viscosity coefficient and the absorbed laser pulse energy change.关键词
激光致声/透明液体/体积模量/动力粘性系数/吸收能量Key words
laser induced sound/transparent liquid/bulk modulus/dynamic-viscosity coefficient/absorbed laser pulse energy分类
数理科学引用本文复制引用
王雨虹,王江安,吴荣华..液体性质与吸收能量对激光致声特性的影响[J].强激光与粒子束,2009,21(7):998-1002,5.基金项目
武器装备预研基金项目 （）
武器装备预研重点基金项目 （）
