Abstract
AbstractWe used a fixed-bed flume test and ultrasonic sensor measurement technology to study the evolution of the characteristics of thin-layer flow roll waves on a sloped surface. The results indi...
Highlights
Flow on a slope is the primary stage of surface runoff and the main dynamic factor of slope soil erosion
When the energy slope and the roughness coefficient are both small, there is a positive correlation between the wave velocity and the Reynolds number
The following conclusions were obtained: 1. When the energy slope and roughness are small, there is a positive correlation between the wave velocity and the Reynolds number
Summary
Flow on a slope is the primary stage of surface runoff and the main dynamic factor of slope soil erosion. Many factors affect overland flow under natural conditions; in addition, mass and momentum sources continuously join the flow path, making it difficult to quantitatively describe the flow on slopes. The erosion of sandy slopes in the loess plateau of the northern Shaanxi area of China is of serious concern, and the slopes are relatively flat in the ecotone between the areas that experience wind erosion and water erosion. This is the area where the slope flow is prone to instability and roll waves. Our ability to select characteristic parameters for roll waves and our understanding of the factors affecting the evolution of the flow on slopes need to be strengthened
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