Flow exits the estuary during ebb tide.
Eddy A current of fluid moving contrary to the direction of the main current, especially in a circular motion. For riverine cases, this angle may be set to the local river axis. This will then allow you to relax the transverse eddy viscosities. For estuarine conditions where it is difficult to define a primary flow direction, this variable is normally ignored and the transverse and longitudinal eddy viscosities are set the same. Element A segment, triangle, or quadrilateral shape composed of corner nodes and mid-side nodes .