摘要
在分析、借鉴国内外研制经验的基础上，研制单喷头曲面设计、双层喷射变雨强弹簧调节的野外模拟降雨喷头，实现了以单喷头替代多喷头组合式模拟降雨装置，并达到同样模拟降雨效果。由于喷头采用曲面设计，确保喷射水舌有规律地变化；模拟雨滴动能接近于天然降雨动能；模拟降雨过程均匀；喷射面积稳定。实测证明：雨滴中数直径为0．57～4．26mm，降雨均匀系数≥0．8（±0．05），降雨面积为150m^2，模拟降雨强度为30～240mm／h。
On the basis of the internal and external experiences, a single-spraying head simutator with curved-surface, double-lager, variable rainfall intensity spring was developed. Because of the curved-surface design, it can make the water tongue move regularly, so the artificial rainfall is just as like as the natural rainfall. The simulated rainfall process is well-distributed and spraying area is stable. The experiment showed that the midraindrop size is of 0.57 - 4.26 mm, rainfall area is of 150 m^2, and simulated rainfall intensity ranged 30 - 240 mm/h.
出处
《中国水土保持科学》
CSCD
2006年第5期99-102,共4页
Science of Soil and Water Conservation
关键词
模拟降雨
相似性定律
均匀系数
降雨强度
稳定性
simuated rainfall
comparative law
coefficient of eveness
rainfall intensity
stability
