固体火箭技术2013，Vol.36Issue(1)：50-55,6.DOI:10.7673/j.issn.1006-2793.2013.01.010
雾化锥角对喷雾在横流中蒸发掺混的影响
Effect of spray angle on mixing of evaporating spray in crossflow
摘要
Abstract
The influences of spray angle on the mixing of evaporating spray droplets in the crossflow were investigated via a numerical simulation to obtain the optimum spray angle that leads to an enhanced mixing and an improved cooling effect. An evaluation criterion for mixing effect and degree of mixedness,was proposed. Based on the well validation with the experiment,the distributions of crossflow temperature,flowfield structures and curve of mixing degree under five spray angles of 40° ,60° ,80° ,90° and 100° were numerically obtained. The results show that the cooling effect increases with the increase of spray angle,while the mixing degree reaches the maximum when the spray angle is 90° and then decreases with the continuous increase of spray angle. The symmetrical vortex pairs under the small spray angle contribute to the mixing in certain regions. However,an improved mixing uniformity can be achieved with a larger spray angle attributed to the multi-scale vortex pairs. The spray angle within the range between 90° and 100° is preferred in terms of both the mixing degree and the cooling effect.关键词
喷雾/横流/掺混/蒸发/雾化锥角Key words
spray/ crossflow/ mixing/ evaporation/ spray angle分类
航空航天引用本文复制引用
孙慧娟,张海滨,白博峰..雾化锥角对喷雾在横流中蒸发掺混的影响[J].固体火箭技术,2013,36(1):50-55,6.基金项目
国家自然科学基金创新群体(50821064). （50821064）
