摘要
为了解坡面薄层水流在坡度、单宽流量及水流流床等外界条件发生变化时,其水流水动力特证参数的变化规律,从水力学的角度出发,在室内开展阻力试验,分别对3°、6°、9°、12°、15°等5种不同坡度、不同级配人工沙粒铺设的粗糙床面展开水流水力学试验研究,并对试验得出的有关数据进行分析,初步探明了坡面水流流态为过渡流区的延伸,得出坡面薄层水流阻力系数、雷诺数、佛汝德数与单宽流量的变化规律及相互之间的关系。
The changing regularity of specific hydrodynamic properties parameters under different outside conditions of slope, flow rate and flow bed of overland sheet flow was studied. The indoor resistance test was carried out with hydraulics. The hydrodynamic characteristics of rough bed under 5 different slopes, 3°,6°,9°,12°, 15°, and different grading of artificial sand were experimentally studied. Based on analyzing the data, it was indicated that the overland flow pattern was the stretch of transitional flow. The changing regularity and relationships among resistance coefficient, Reynolds number, Froude number and flow rate were analyzed.
出处
《湖北农业科学》
北大核心
2013年第22期5455-5458,共4页
Hubei Agricultural Sciences
基金
国家自然科学基金项目(41001159)
浙江省高等学校访问工程师校企合作项目(FW2012001)
浙江省教育厅科研基金项目(Y201016745)
关键词
坡面流
流态
雷诺数
佛汝德数
oerland flow
flow state
Reynolds number
Froude number
