Relationship Between Bed Forms and Friction in Alluvial Channel Flow

This paper reports development of a relationship between friction factor of bed covered with ripples and the size and other geometric properties of these bed forms. The objective of the present study is to reveal the theory of resistance to flow. A relationship has been established between the ripple friction factor and the parameter modified relative roughness. An empirical relationship has also been developed for computation of mean velocity using experimental flume data.