Experimental Study on the Sand Waves and Flow Resistance under Coexistence of Bed and Suspended Loads

Abstract

Laboratory experiment is conducted using uniform sand of mean diameter 0.21mm under the condition that bed and suspended loads coexist. It is ascertained by the observation and the Garde·Raju regime criterion that sand waves produced on this condition are three dimentional antidunes and alternate bars with two dimentional antidunes.
Characteristics and flow resistance of these bed shapes are discussed on the basis of the results of experiments.