SMS:CMS-Flow Model Parameters
This dialog allows the user to specify general model parameters, controlling which model options the simulation will employ. The controls include:
Time Control
In this section the user can set the starting time, duration and hydraulic time step. The Ramp duration defines the length of an incremental loading portion at the beginning of the simulation. Controls include:
- Start date
- Start time
- Simulation duration
- Ramp duration
- Hydrodynamic time step
Hot Start
These controls allow the user to specify a previously saved hot start file to be used as initial conditions or instruct CMS-Flow to save hot start files for future use.
- Initial conditions file
- Write Hot Start output file
- Automatic recurring Hot Start file
Parameters
This section allows the user to specify various general parameters to be used by the simulation. This include:
- Anemometer height: Specifies the height at which the wind data in the wind input file was recorded.
- Depth to begin drying cells: This is a minimum depth of water before the model considers the cell to be dry. Shutting off cells when the depth drops below a tolerance avoids flutter of insignificant transfers of water. The recommended default value is 0.05 meters.
- Include wall friction: Normally friction at the closed boundaries are ignored. The model can be instructed to include friction along these boundaries as if a wall exists there.
- Latitude throughout grid: Once the current coordinate system has been defined, the user can specify to store cell-specific latitudes for each cell when the grid file gets saved. The other option is to take an average latitude throughout the grid and to store it for each cell in the grid file.
- WSE smoothing iterations: This value is the number of times the WSEL cellstring is parsed to smooth any spatial irregularities from cell to cell. This is only applied when BC forcing is extracted from a larger solution. A simple moving 3-cell average is used.
Momentum Equation
The model supports advective and/or mixing terms for use with CMS-Flows’s internal calculations. Toggles include:
- Include advective terms
- Include mixing terms
