Culvert Properties

Calculated Discharge derivative with DownStreamWaterLevel. Downstream is relative to the direction of chainage. The value is calculated by SetWaterLevels. Unit: [m^2/s]

Calculated Discharge derivative with UpStreamWaterLevel. Upstream is relative to the direction of chainage. The value is calculated by SetWaterLevels. Unit: [m^2/s]

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

Calculated Discharge. The value is calculated by SetWaterLevels. Unit: [m^3/s]

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

The invert level downstream. Unit: [m] Default: 0

Downstream water level.Downstream refers to the direction of chainage. The water level is set by use of SetWaterLevels Unit: [m]

Property used by (de)serializer, when it can not find proper target for a data field. Support of forward compatible data contracts.

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

Flow area for outflow of culvert.

The discharge (and discharge derivatives) are scaled by the flow factor.

The geometry of the culvert section.

Bends head loss factor for negative flow. Unit: [] Default value = 0.

Bends head loss factor for positive flow. Unit: [] Default value = 0.

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

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

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

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

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

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

Horizontal offset relative to up- and down- stream cross sections. Used when doing structure plotting.

Hydraulic parameters for the given geometry.

Structure ID

Used to get a consistent description of the structure. The ID comes in user units. Used e.g. when reporting errors, warnings and hints.

Flag to control if the structure is implicit or explicit. If the structure is explicit (Implicit == false) then the derivatives of the dicharge are always zero. Default value: true

Invert level down stream

Invert level up stream

Length of the culvert. Unit: [m] Default: 0

Location property.

Mannings n. Unit: [s/m^(1/3)] Default: 0.013

Maximum number of iterations in a structure to obtain convergence of the discharge. Default value = 100

Currently this is set for all structures from the MaximumIterationsInStructure, but it is prepared for individual structure values.

Multiplicator or "number of culverts". Used for modelling more culverts in one go. Unit: [] Default: 1

Multiplicator or "number of culverts", that are multiplied by the discharge. This is set if CalculateFlowConditions(Int32) is executed, since the returned tables does not take Multiplicator into account.

Total number of iterations in culvert structure.

Orifice flow coefficients for negative flow

Orifice flow coefficients for positive flow

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

Q/h relations for negative flow

Q/h relations for positive flow

The getter is used to get a list of errors.

Bank side that side-structure is located on

If side structure contains reservoir, and has the Coordinate set, this is not used (and should be set to Undefined).

Reservoir at end of side structure. Null if not side structure, or no reservoir is defined

How to solve the energy equation.

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.

Type of structure

String used to identified cross sections

Total number of iterations in culvert structure.

Structure type, unique for each structure.

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

The invert level upstream. Unit: [m] Default: 0

Upstream water level. Upstream refers to the direction of chainage. The water level is set by use of SetWaterLevels Unit: [m]

Type of the valve Default: None