UnderFlowGate Fields

List of quantities that are accepted

Gate level

Flag indicating if gate control is active, i.e. gate is opening or closing

Controllable maximum gate level

Controllable minimum gate level

If the structure is being controlled, then _controlStategyId contains the ID of the active control strategy

Target level of gate, i.e. the level that the gate currently approaches.

Linear flow variation. For water level differences less than delhs use a linear Q variation between h1-h2=delhs and h1-h2=0. This is to avoid stability problems for small water level differences where dQdh goes to infinity. Unit: [m] Default: 0.01

Downstream cross section data. The cross section data is the processed level, with, area.

Downstream water level, as set by SetWaterLevels(Double, Double) Unit: [m]

The derivative of flow through the structure with downstream water level. The flow is calculated in the derived classes when the SetWaterLevels method is called. Unit: [m2/sec]

The derivative of flow through the structure with upstream water level. The flow is calculated in the derived classes when the SetWaterLevels method is called. Unit: [m2/sec]

Flow area through structure. Used by most (but not all) structures.

FlowDir is used to determine which parameters to use for the flow calculations. Derived by the SetWaterLevels(Double, Double).

Free overflow factor for negative flow. Default value = 1.

Free overflow factor for positive flow. Default value = 1.

Inflow head loss factor for negative flow. Default value = 0.5.

Inflow head loss factor for positive flow. Default value = 0.5.

Outflow head loss factor for negative flow. Default value = 1.

Outflow head loss factor for positive flow. Default value = 1.

Identification name of the structure

If _implicit == false, then the derivatives are always zero. Default value: true.

Location in the network

Maximum value of gate level that a control can set in Control()

Minimum head loss across a structure. Default value = 0.1

Multiplicator or "number of structures" of this type. Used for modelling more structures at the same location with the same geometry in one go. Unit: [] Default: 1

List of quantities that are offered

When the culvert is part of a composite structure Q1=Q2 will differ from Qs. Qs=Q1*_partOfCompositeFlow;

Flow through the structure. The flow is calculated in the derived classes when the SetWaterLevels method is called. Unit: [m3/sec]

Diagnostics are written into this Diagnostics during calculations. Set during Initialize(IDiagnostics)

The level of the sill just upstream of the gate.

Used when making relaxation when iterating to find the subcritical solution for structures solved using the energy equation. When it equals 1 no relaxation is made.

Identification used to find referenced cross sections

Upstream cross section data. The cross section data is the processed level, with, area.

Upstream water level, as set by SetWaterLevels(Double, Double) Unit: [m]

Flag indicating if controllable maximum gate level is enforced

Flag indicating if controllable minimum gate level is enforced

Type of the valve Default: None

Width of weir