Self-Formed Straight Channels in Sandy Beds

摘要: The hydraulic geometry and the local features of straight, relatively wide self-formed channels composed sandy bed are studied in laboratory flumes. Introduction one loose other rigid bank experiments excludes tendency toward meanders provides good examples to test regime relations. support a few relations derived rationally. transverse shapes equilibrium have universal profile regardless initially-molded cross section, discharge flow, sand diameter within scope experiments. A theoretical analysis secondary currents straight reasonable interpretation such as longitudinal ridges, this suggests insignificant effect on size channels.