Argonne National Laboratory

Noise Effects on Wave-Generated Transport Induced by Ideal Waves

TitleNoise Effects on Wave-Generated Transport Induced by Ideal Waves
Publication TypeReport
Year of Publication2002
AuthorsRestrepo, JM, Leaf, GK
Series TitleJ. Physical Oceanography
Date Published01/2002
Other NumbersANL/MCS-P1008-0102,

<p>We consider the transport velocity in boundary layer flows driven by either noisy monochromatic progressive or standing waves. The central issue addressed here is whether such flows are capable of sustaining a transport velocity when noise is present in the wave field and, if so, in what ways the noise affects the transport velocity, the mean wall shear stress, and the total mass flux. Specifically, we address the effect of noise due to unresolved processes. Our study is motivated by the fact that in the natural setting it is the norm rather than the exception that noise is present in the wave field. We find that when noise is added to standing waves, the transport in the boundary layer leads to a nonzero mass flux. On the other hand, noise due to progressive waves reduces the mass flux. Further, we find that the drift velocity will have two components: a deterministic one and a diffusive one.</p>