Analysis of Ultra-high Pressure Pulse Spray Characteristics for Reducing Environmental Pollutants in Spray Combustion

为了解超高压脉冲喷射特性，进行了实验和数值模拟。利用高速摄像机成像技术测量了喷雾的穿透性和分散性等特性。将非定常两相湍流计算方法、k-ε模型和大涡模拟（LED）技术应用于脉冲喷射场，得到了较好的结果。进行了喷雾燃烧实验，确定了在一定脉冲喷雾条件下的低nox燃烧。

An experiment and numerical simulation were carried out to understand the ultra-high pressure pulse spray characteristics. The spray characteristics such as penetration and dispersion were measured by imaging method which was obtained by high-speed video camera. The unsteady-state two-phase turbulent flow calculation method, k-εmodel and Large Eddy Simulation (LED) are applied to the pulse spray field and a superior results were obtained by using LES. The spray combustion experiment was carried out and a low-NOx combustion was confirmed under certain pulse spray condition.