排灌机械工程学报2012，Vol.30Issue(1)：53-56,63,5.DOI:10.3969/j.issn.1674-8530.2012.01.011
淹没条件下自激脉冲射流冲蚀试验研究
Experiment research on erosion of self-excited inspired pulsatile jet in submerged conditions
摘要
Abstract
In order to compare erosion effect of the self-excited inspired pulsatile jet with the continuous one under different submergence conditions, experimental studies of paraffin erosion caused from a jet was carried out by using own developed apparatus. In the experiments,the jet impact power, inspired air capacity, eroded surface depth, volume loss and eroded surface area were obtain under different submerged depths. The experimental results showed that the impact power of the continuous jet is larger than inspiration pulse jet; while the power of the inspired pulsatile jet is higher than that of the jet without inspiration. Moreover,the difference in impact power between the inspired and non-inspired jets steadily gets smaller with increasing submerged depth. When the submerged depth is shallower(30 m or less) , the eroded surface depth of the continuous jet is smaller than the inspired pulsatile jet due to the stronger denudation caused from the air inspired. However,if the submerged depth is deeper(40 m or more) , the eroded surface depth of the continuous jet is larger than the inspired pulsatile jet because of the less air inspired. The eroded surface area and volume loss of the inspired pulsatile jet are less than the continuous jet under various submerged depths. The eroded surface area and volume loss of two kinds of jet become small gradually, and their difference between the two jets also gets closer and closer with increasing submerged depth.关键词
自激脉冲射流/连续射流/冲蚀/淹没条件Key words
self-excited inspired pulsitale jet/continuous jet/erosion/submergence condition分类
农业科技引用本文复制引用
高传昌,赵礼,刘新阳,黄晓亮..淹没条件下自激脉冲射流冲蚀试验研究[J].排灌机械工程学报,2012,30(1):53-56,63,5.基金项目
水利部公益性行业科研专项经费资助项目(200801011) （200801011）
华北水利水电学院研究生创新课题(YK2010-10) （YK2010-10）
