Decay

This page contains information for non-conservative components. These components are assumed to decay according to a first-order expression:

Where K is a decay constant and C is the concentration. Both global and local values of the decay constant K can be specified.

Important: Decay constants should not be specified in this dialogue if the components selected are used for a water quality simulation (WQ) as pro­cess-equations defined in the Water Quality (or MIKE ECO Lab) template normally includes all processes affecting the State variables. Therefore, add­ing an additional decay in this AD Parameter Editor will normally interfere negatively with the defined equation framework of the Water Quality model.

Global values

Component

Here the component in question is selected. You can select the component from the drop-down menu.

Decay

Here the value of the decay constant is entered (default unit is [per hour]). Alternative units are

Local values

MIKE HYDRO uses the values specified under global values except for those locations were local values have been specified. To add or remove these locations to the table use the Append and Delete buttons (‘+’ or ‘-’).

Branch name

The name of the river branch with the local decay constant value.

Component

Here the component with a local decay value is selected. You can select the component from the drop-down menu.

Chainage

The chainage in the river with the local value.

Decay

Here the local value of the decay constant is entered (default unit is [per hour]).