摘要
利用激波管中波系间的相互干扰，实验模拟了爆炸波对水汽的作用，并通过光学测试方法，对水汽同质核化、凝结非定常瞬态变化过程进行了测定．结果表明：在爆炸波强度较弱时，水汽不发生凝结；而在一定强度爆炸波后的非定常流场中，水汽会发生同质核化、凝结．
With the experimental modeling method of wave interference in shock tube, the impact of blast wave on water vapor was studied. The unsteady transient process of the homogeneous nucleation and condensation of water vapor was measured by dualwavelength light extinction method.The experimental results show that there are no condensation phenomena in vapor provided that the blast wave is weak, but homogeneous nucleation and condensation of water vapor may occur in the unsteady flow flying behind the blast wave. The fact means that the adiabatic cooling process behind blast wave is more important for the phase transformation of water vapor.
出处
《实验力学》
CSCD
北大核心
1997年第4期534-538,共5页
Journal of Experimental Mechanics
基金
国家自然科学基金
中科院"九五"基础性研究重点项目基金
关键词
激波管
爆炸波
水汽作用
瞬态相变
shock tube, blast wave, water vapor, transient phase transformation.
