Performance of a PIV system for a combusting flow and its application to a spray combustor model
Performance of a PIV system for a combusting flow and its application to a spray combustor model
复制标题
燃烧流PIV系统的性能及其在喷雾燃烧室模型中的应用
作者：
M. Kiuchi;N. Fujisawa;S. Tomimatsu
利用计算机图形生成的人工图像和实验数据，对PIV系统的燃烧流性能进行了评价。为了优化PIV系统的性能，研究了快门速度、滤波器、激光功率和PIV算法对测量不确定度的影响。将该系统应用于锅炉喷雾燃烧器模型，分析了燃烧前后的流动规律。结果表明，燃烧器流动形成复杂的三维流型，导致燃烧室内燃料流动高度混合。虽然有燃烧和无燃烧时的流型相似，但由于燃烧中化学反应的影响，流场中燃烧器流动面积增大，速度量级增大。
The performance of PIV system for combusting flow was evaluated by using artificial images generated from computer graphics and experimental data. The influences of shutter speed, filter, laser power and the PIV algorithms on the measurement uncertainty were studied for optimizing the performance of the PIV system. This system was applied to the spray combustor model for boiler, and the flow patterns with and without combustion were elucidated. Results showed that the burner flow generates complex three-dimensional flow pattern, which contributes to highly mixed fuel flow in the combustor. Although the flow pattern with and without combustion is similar, the growth of burner flow area and an increase in velocity magnitude are found in the flow field by the influence of chemical reactions in combustion.