Stable channel design with different sediment transport equations and geomorphologic constraints in Cheongmi stream

Analytical design for stable channel geometry of Naesung Stream in Korea

“…Stable depth and slope for the channel base width, determined by the empirical equation, are calculated using the sediment transport equation and flow depth prediction of Brownlie (1981). In this study, more equations are adopted to calculate sediment capacity during stable channel design, and stable channel calculation can be performed by additionally selecting Ackers and White (1973)'s, Engelund and Hansen (1967)'s, Yang (1979)'s and Meyer-Peter and müller (1948)'s equations (Jang et al, 2015). Copeland's method (1994) is the most widely used method of stable channel design.…”

“…In contrast, when the depth (D) needs to be fixed, the stable width (W) and slope are determined. Three algorithms are applied to develop the SCAD program (Jang et al, 2015). The Naesung Stream is a tributary of Nakdong River in South Korea.…”

“…Copeland's method (1994) is commonly used for stable channel design and is implemented. However, despite the most sensitive variable when designing, the sediment transport capacity for the design channel is calculated by restrictive equation (Jang et al, 2015). Therefore, the stable channel analysis which can apply various sediment transport equations is required to design.…”