Diagnostics of Swirl Combustion Processes

系统的工作将开始在诊断漩涡 液体喷射火焰。 迄今为止，旋流的测量已经 主要是使用气体燃料。 测量液体 喷雾器仅限于将液体喷射到 安静的环境。 液滴尺寸、液滴速度、 粒子数密度和尺寸-速度相关性从来没有 在旋转等温或燃烧液体喷雾中测量。 的 目的是确定涡流对湍流的影响， 液体喷雾颗粒的混合及其对旋流的响应 流动，并确定涡流对形成的影响， 环形涡核及其对喷雾的影响。 将开发先进的基于激光的诊断技术 特别是旨在研究液体喷雾的性质， 燃烧旋流。 液体的动力学性质 喷雾将被确定;这些是火焰稳定的关键， 污染物的形成，并将导致整体优化 燃烧效率及在内燃机上的应用 发动机、燃气涡轮机和熔炉设计。

Systematic work will be initiated in the diagnostics of swirling liquid spray flames. To date, the measurement of swirling flows has been performed mostly with gaseous fuels. Measurement of liquid sprays has been restricted to simple atomizers spraying liquids into quiescent environments. Detailed data of drop size, drop velocity, particle number density, and size-velocity correlations have never been measured in swirling isothermal or combusting liquid sprays. The objectives are to determine the effect of swirl on the turbulent mixing of liquid spray particles and their response to the swirling flow, and to determine the effect of swirl on the formation of the toroidal vortex core and its effect on the spray. Advanced laser-based diagnostic techniques will be developed specifically aimed at investigating the properties of liquid sprays in combusting swirling flows. The dynamics properties of the liquid sprays will be determined; these are key to flame stabilization and pollutant formation and will lead to optimization of overall combustion efficiency, with applications to internal combustion engines, gas turbine, and furnace design.