Eddy flow characteristics and mean flow interactions in the North Pacific

the effects of changing roughness on the flow structure in the bends

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

Eddy-mean-flow interaction in a barotropic ocean model

The role of eddies in the maintenance of idealized, antisymmetrically forced double gyres is studied using a barotropic ocean circulation model. A diagnosis in terms of q , the quasi-conserved absolute vorticity , enables an understanding of the effect of the eddies on the time-mean flow. The unstable model Gulf Stream, partitioning counter-rotating gyres, is the confluence region where q conto...

Eddy characteristics in the eastern South Pacific

Eddy-Mean Flow interactions in the Along-Stream Development of a Western Boundary Current Jet: An Idealized Model Study

A theoretical study on the role of eddy-mean flow interactions in the time-mean dynamics of a zonally evolving, unstable, strongly inertial jet in a configuration and parameter regime that is relevant to oceanic western boundary current (WBC) jets is described. Progress is made by diagnosing the eddy effect on the time-mean circulation, examining the mechanism that permits the eddies to drive t...

Recovery of atmospheric flow statistics in a general circulation model without nonlinear eddy-eddy interactions

[1] The closure problem of turbulence arises because nonlinear interactions among turbulent fluctuations (eddies) lead to an infinite hierarchy of moment equations for flow statistics. Here we demonstrate with an idealized general circulation model (GCM) that many atmospheric flow statistics can already be recovered if the hierarchy of moment equations is truncated at second order, correspondin...