Two-Dimensional Velocity And Size Measurements of Engine Sprays And Two-Phase Flows

摘要：需要一台二维位相多普勒粒子分析仪。这将用于稀薄直喷四冲程火花点火发动机的燃油喷雾和空气混合的研究；冷启动喷射火花点火发动机燃料/空气混合的研究；对柴油中掺入的含氧物如何影响缸内喷雾燃烧特性和污染物形成的了解；对包括喷雾/壁面撞击、回流、微爆炸和颗粒扩散在内的喷口喷射过程的实验和模拟；以及对气缸湍流尾迹中颗粒扩散的实验研究。

Abstract:A two-dimensional phase Doppler particle analyzer is required. This is used in an investigation of fuel sprays and air mixing in lean direct-injection four-stroke spark-ignition engines; a study of fuel/air mixing in a cold-start port-injected spark-ignition engine; the development of an understanding of how oxygenates blended in diesel fuel impact in-cylinder spray combustion characteristics and pollutant formation; experiments on and modeling of port injection processes including spray/wall impingement, backflow, microexplosion, and particle dispersion; and an experimental study of particle dispersion in the turbulent wake of a cylinder.