摘要
利用坡面薄层水流的电解质脉冲数学模型,计算了不同坡度和含沙量下的电解质弥散系数,发现在泥沙含量较低时,弥散系数与水流速度有较好的线性相关性,但泥沙含量较高时,泥沙含量对弥散系数作用更加强烈,弥散系数与速度的相关性较差,说明弥散系数受泥沙含量和水流速度影响,但三者的关系函数有待于进一步探讨。
The dispersion coefficients of electrolyte solute in flow of different slope and sediment concentration are calculated using the mathematical model of electrolyte pulse transferring in laminar flow. The dispersion coefficient is liner related to the velocity of flow when the sediment concentration is relatively low; The sediment concentration is high, it affects intensively the dispersion coefficient, and make their liner relationship bad. These results shows that the relation between dispersion coefficient and sediment concentration and velocity deserves to more discuss.
出处
《水土保持学报》
CSCD
北大核心
2004年第2期78-79,83,共3页
Journal of Soil and Water Conservation
基金
引进国外杰出人才基金(982602)
国家自然科学基金(40171062)
中科院知识创新重要研究方向项目(KZCX3-SW-422)
关键词
薄层
水流速度
弥散系数
泥沙含量
slope flow
electrolyte pulse
dispersion coefficient
