ISWC OpenIR  > 水保所知识产出(1956---)
高延良1; 董旭1; 杨帆1; 张宽地1,2
Source Publication水力发电学报

据,通过室内定床阻力模拟放水实验,定量的研究了植被覆盖度为9.3%(2500 簇/m2)的工况下,不同坡度和流
单驼峰形式,本实验条件下,在雷诺数为1500 ~ 2000 时达到最大值,当雷诺数大于2000 时,随雷诺数的增加阻

Other Abstract

This experiment has been conducted to study hydraulic characteristics of overland flows on a
fixed bed laboratory model with simulated vegetation cover of 9.3%, along with an analysis on variations
of hydraulic parameters of overland flows under different discharges and different bed slopes using the
theories of fluid mechanics and hydraulics. Measurements show that average velocity of water flow on
the vegetation slope increases with bed slope and flow rate, and that the relationship can be expressed by
either a linear or power function, but with the linear one superior. These two functions can also well fit
the relationship of water depth versus bed slope and flow rate. Froude number of the vegetation slope
water flow decreases with the increasing flow rate but increases with bed slope, following a power
function, but its variation is evidently dominated by bed slope and much less dependent on flow rate.
Resistance coefficient of the flows varies in a hump shape, reaching its peak in the Reynolds number
range of 1500 to 2000. In the range beyond 2000, it is decreasing inversely with Reynolds number and
then gradually approaching a stable value. Thus, the relationship of resistance coefficient versus Reynolds
number is not monotonic.

Keyword工程水力学 坡面流 植被覆盖 水动力学特性 阻力系数
Indexed By中文核心期刊要目总览
Document Type期刊论文
2.中科院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国 家重点实验室
Recommended Citation
GB/T 7714
高延良,董旭,杨帆,等. 坡面植被水流水动力学特性研究[J]. 水力发电学报,2016,35(9):38-47.
APA 高延良,董旭,杨帆,&张宽地.(2016).坡面植被水流水动力学特性研究.水力发电学报,35(9),38-47.
MLA 高延良,et al."坡面植被水流水动力学特性研究".水力发电学报 35.9(2016):38-47.
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