Abstract
In this study, a numerical analysis and a laboratory experiment were carried out in respect to an open channel flow field with a group of permeable groins installed. By using a two-dimensional depth-averaged numerical model, flow fields and water surface profiles were analyzed and compared with the laboratory data. The model was developed by taking consideration of flow resistance and permeability of the rubble mound structures, which is expected to be a powerful tool for making hydraulic design of rubble mound groins as well as other permeable river structures. The agreement between the analysis and experiment was fairy satisfactory. Effects of rubbles' porosity and diameter and geometry of the group of groins on the flow structure and flow force were discussed based on the experimental and the numerical data.
