Turbulent Boundary Layer in Wave‐current Motion

Abstract

The mean current velocity profile in the combined wave‐current motion is calculated by use of the depth‐integrated momentum equation. The velocity distribution is assumed to be logarithmic inside as well as outside the wave boundary layer, but with different slopes. Hereby, it is possible to describe the flow in the whole range from the pure wave motion (without any mean current) to the pure current motion (without any waves). The theory covers an arbitrary angle between wave propagation direction and mean current direction.