| Title |
Roughness Coefficients Evaluation of the Korean Riparian Vegetation |
| Authors |
이동섭(Rhee, Dong Sop) ; 이두한(Lee, Du Han) ; 김명환(Kim, Myounghwan) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.6B.345 |
| Keywords |
조도계수;식생조도;n-VR 관계;수변식생;흐름저항 roughness coefficients;vegetation roughness;n-VT relationship;riparian vegetations;flow resistance |
| Abstract |
The main objective of this study is evaluating experimentally roughness coefficients of the Korean riparian vegetations based on the n-VR analysis to suggest the practical guideline for Manning's roughness coefficients for the channel design. Hydraulic experiments were conducted for Phragmites japonica Steud., Miscanthus sacchariflorus (Maxim.) Benth., and Phragmites communis Trin. under both submerged and un-submerged conditions, and the n-VR relationships are developed for each grass. Three vegetations tested in this study can be considered as same group showing similar roughness characteristics, though these grasses are strongly affected by vegetation stiffness. Vegetation roughness are also affected by the growth state of plants according to experimental results of Phragmites communis Trin. |