化工学报2011，Vol.62Issue(1)：66-70,5.
横向射流中心轨迹和扩展宽度
Central trajectory and spread width in transverse jet
摘要
Abstract
In order to study the penetration depth and the spread width in a transverse jet, a flowvisualization based experimental setup was built. A phase tunable laser and CCD system was employed, and several jet to crossflow velocity ratio (r=2, 4, 8, 12, 16) were investigated. Experimental results showed that the jet to crossflow velocity ratio is the key parameter to control the penetration depth and the blending law of the jet, and that larger jet to erossflow velocity ratio resulted in much deeper penetration depth. The experimental data agreed well with the previous reports, and predicting formula was derived as the fitting equation y/rd= 1. 3615 (x/rd)0.5608 with the correlation coefficient R=0. 9996. On the other hand, the larger jet to crossflow velocity ratio is not the greater access to the spread width, and in this work, the case of r=8 obtained the largest spread width, and the spread width remains relatively large in a large penetration zone.关键词
横向射流/中心轨迹/扩展宽度/流动显示Key words
transverse jet/ central trajectory； spread width/ flow visualization分类
能源科技引用本文复制引用
李国能,林江,李凯,郑友取..横向射流中心轨迹和扩展宽度[J].化工学报,2011,62(1):66-70,5.基金项目
浙江省科技计划重点项目(2006C21058) （2006C21058）
浙江省高等学校创新团队(T200918) （T200918）
浙江省高等学校优秀青年教师资助项目. （）
