液体环轴对称抛撒首次破碎的实验研究和稳定性分析

Experimental Investigation and Stability Analysis for the Primary Breakup of a Moving Annulus of Liquid

首次破碎是液体抛撒、破碎过程中一个非常重要的阶段．本文提出了一种新的实验设备，并通过在这套实验设备上的一系列实验，得到了在不同激波马赫数、不同的液体种类和不同的抛撒容量下液体首次破碎过程的照片．实验结果表明，在确定的抛撒条件下，液体环的失稳，即不稳定的发生、发展并最终导致液体环破碎的过程。

An experimental system for investigating the primary breakup of a moving annulus is first presented. Experiments under the condition of axially symmetrical splashing are performed. Photographs that recorded the process of deforming and breaking of the liquid annulus are obtained. Based on the observation, an stability analysis for the moving liquid annulus is given.