激波诱导液滴变形和破碎机理研究

Phenomena of shock wave-induced droplet deformation and breakup have been investigated experimentally and numerically. An experimental apparatus and an optical system are set up to perform experiments and to record the whole process of droplet acceleration, displacement, deformation and breakup in gas flows induced by a shock wave. An unstructured adaptive mesh generation, corresponding moving boundary condition and a numerical treatment are proposed to directly simulate unsteady flow fields around deforming and moving bodies induced by shock waves. The experimental method and numerical treatment developed in the project are very important not only for investivestigation of gas-liquid two-phase flows but also for such engineering applications as detonation propulsion, industial explosion suppression, and the like.

本项目对激波诱导的液滴变形和破碎机理进行系统的实验研究和数值模拟。详细探讨激波与球形液滴相互作用以及液滴加速、变形、破碎全过程中所发生的现象，深入研究激波诱导的液滴内流场性质以及气液相间相互作用对液滴变形和破碎影响机制。本项目研究不仅对揭示气液相间相互作用现象具有学术价值，而且在高超音速燃烧研究方面具有重要的应用前景。