ST Initial Concentrations¶

Initial sediment concentrations can be specified for cohesive fractions, in advanced morphological analyses. They are defined in the 'ST initial concentrations' editor, available from the 'Initial conditions' group in the Setup tree.

For non-cohesive fractions with suspended load, the initial concentration always equals equilibrium: this is calculated automatically during the simulation and doesn't require any input in MIKE+.

Initial sediment concentrations are given default settings which apply globally (for all links in a model) unless local values are specified for selected links. The local definitions override the default settings.

Figure: The 'ST initial concentrations' editor

A description of all available settings follows.

Default conditions table¶

This table contains the default initial concentration of each cohesive fraction.

Local conditions locations¶

Local settings for the initial sediment concentrations can be specified. For each local condition, the location may be defined by:

List: the local concentration is applied to all links (pipes or rivers) in the selected list.
Entire link: the local concentration is applied to the selected link.
Point on link: the local concentration is applied to a specific point (identified by its chainage) on the selected link. The local concentration will be interpolated in space between the different points, when multiple points are defined on the same link.

Local concentration¶

For each local condition, the local value of initial concentration needs to be specified here. It is defined by the local concentration value and by the corresponding sediment fraction to which it applies.