Geometry Creates the cross sections

Geometry configuration: Reach length definition and number of cross sections required.


Reach length and location of the cross sections.

Length (m)
Location (m)
Section 1
Section 2
Section 3

Cross sections

Cross sections are defined by (x,y,z) coordinates. Coordinate x has already been defined.

Coord. y (m)
Coord. z (m)
Point 1
Point 2
Point 3
Point 4
Point 5
Point 6


Roughness factor to model friction with the channel bed using Manning coefficient n

Manning coefficient

Initial Conditions Generates the initial conditions

State of the variables at the beginning of the simulation.
  • dry: Zero values
  • h+z uniform: All the cells with the same water level
  • Q uniform: Steady state corresponding to the discharge.
  • h uniform: All the cells with the same depth.
  • Dambreak Discontinuity at a given location

Initial condition

Select one option

Boundary Conditions Configuration of the inlet and outlet

The Upstream boundary condition determines the inlet condition. The Downstream boundary condition provides the outlet condition.

Upstream condition

Determines de inlet condition.

Number of points

Time (s)
Q(t) (m3/s)

Downstream condition

Determines de outlet condition.

Gates Configuration of the regulation elements

Defines regulation elements such as lateral gates and cross gates with their location, width and discharge coefficient. They can be regulated using PID control.

Gates configuration

Defines regulation elements

Number of gates

Simulation parameters Configuration of the simulation scheme

The hydrodynamic variables evolution is calculated using the Finite Volume method with an explicit time integration.

Simulation parameters

CFL Condition: Between 0 and 1.
Total simulation time in seconds
Data writing interval in seconds
Simulation time
Inter. Data
Gauging point location. Must be between 0 and the total reach length.
Number of computational cells.