4.1. Overview of Liquid components

Currently, the following components as listed below are available in wanda. Your license specifies if you are authorised to use them.

Table 4.1.1 Liquid components available in Wanda depening on the users license.

Class

Type

Short description

Air Valve

In/outlet

See Vent, Air valve.

AIRVha (class)

Airvessel horizontal vented

Horizontally positioned, cylindrical, vented air vessel

AIRVhn (class)

Airvessel horizontal non-vented

Horizontally positioned, cylin­drical, non-vented air vessel

AIRVva (class)

Airvessel vertical vented

Vertically positioned, pris­matic (con­stant area), vented air vessel

AIRVvn (class)

Airvessel vertical non-vented

Vertically positioned, pris­matic (con­stant area), non-vented air vessel

Airvessel Vertical Hybrid (class)

Airvessel vertical non-vented

Vertically oriented air vessel with an air valve

Inclined air vessel (class)

Inclined air vessel (class)

Air vessel with a cylindrical volume oriented at an angle with horizontal plane

BOUNDH (class)

BOUNDH (reservoir)

Constant or time dependent head

BOUNDQ (class)

BOUNDQ (reservoir)

Constant or time dependent di­schar­ge

Channel (class)

Channel

Short open channel with constant slope

CHECKV (class)

Checkvalve (ideal)

ideal check valve;

closes if Q < 0.0, opens if H1 > H2

Checkvalve (deltaP for reopen)

ideal check valve;

closes if Q < 0.0, opens if P1-P2 > ΔP

CHECKV - undamped

Check valve using the undamped dynamic characteristic (with dimensions)

CHECKV - undamped (dimensionless)

Check valve using the undamped dynamic characteristic, dimensionless

Collector (class)

Collector

Short open channel with constant slope and lateral inflow

Conduit

Conduit

Pipe with free surface flow (atmospherical) and pressurised flow without waterhammer

Control valve

FCV

Flow control valve

PdCV

Pressure control valve downstream sid

PuCV

Pressure control valve upstream side

Damper, Surge vessel

Damper, Surge vessel

Vertically positioned, bladder or piston type damper

INFPIP (class)

Infinit Pipe (H-bound)

Infinite pipe with initial pressure head

Infinit Pipe (Q-bound)

Infinite pipe with initial discharge

Junctions

T-JUNCTION

3-node resistance junction, 90 degree

Y-JUNCTION

3-node resistance junction, sharp angle

X-JUNCTION

4-node resistance junction, 90 degree

Merger

Merger

3 node junction which merges 2 separate branch flows into a combined flow

ORIFICE (class)

Orifice plate

Orifice plate complying with ISO 5167-2:2003

PIPE

Pressurised pipe

Pressurized pipe with different friction models

PIPE FFP (class)

Fast filling pipe

The fast filling pipe can be used to simulate the fast filling of a single pipeline

PRV (class)

PRV (simplified char.)

This PRV monitors the system pressure and opens upon exceedance of a set pressure.

The opening pressure, as well as the full lift pressure and discharge, must be specified. (accumulation is taken into account). Open­ing time, friction, choking flow and valve dynamics are not taken into ac­count.

PRV (Ideal)

This PRV monitors the system pressure and opens upon exceedance of a set pressure.

Opening time, friction, accumulation, choking flow and valve dynamics are not taken into account.

PUMP (class)

Pump

Complete pump model with various data and drives; positive and negative speed.

Pump Energy

PUMPSCEN (Pump Scenario)

To calculate the energy consumption of a pumping station, (belongs to module PumpEnergy)

Q_PATTRN (discharge pattern)

Discharge pattern in a certain period, to calculate the energy consumption of a pumping station, (belongs to module PumpEnergy)

Q_FREQ (discharge frequency)

Discharge frequency in a certain period, to calculate the energy consumption of a pumping station, (belongs to module PumpEnergy)

SYSCHAR (System characteristic)

System characteristic to calculate the duty point of pump(s) in a pump scenario; (belongs to module PumpEnergy)

PUMPSS (class)

PUMPSS (Piston Pump)

Single cylinder, single-acting pump with mechanically driven piston

QSCHAR (Class)

QSCHAR (BoundQ for system characteristic)

Varying discharge to determine the system characteristic

RSVOIR (class)

RSVOIR (reservoir)

Reservoir with initial level and finite size, constant or variable area

RESIST (class)

Resist quadr. xi

Dimensionless ξ-value from loss equation ΔH = ξ v│v│/2g

Resist quadr. C

C-value from loss equation

ΔH = C Q│Q│

Resist linear C

C-value from loss equation

ΔH = C Q

Resist quadr. Initial Q

Initial Q is specified, C from loss equation ΔH = C Q│Q│ is computed

Resist 2-way quadr.xi

Dimensionless ξ-value from loss equation ΔH = ξ v│v│/2g

ξ-value depends on flow direction

Resistance polynomial

Resistance according user defined polynomial

Shaft

Shaft

Shaft with inflow

Splitter

Splitter

3-node junction which splits up a combined flow into 2 separate branch flows

SURGTW (class)

Surgetower constant area

Storage area is independent of liquid height (pressure head)

Surgetower height dep. area

Storage area is a function of liquid height (pressure head)

TANK (class)

TANK (constant pressure)

Pressurised tank with initial pressure and finite size

TAP (class)

Tap return flow

Calculated constant resistance based on deliv­ery rate and downstream pressure. If system head drops below downstream head, TAP supplies back to system

Tap non-return flow

Calculated constant resistance based on deliv­ery rate and downstream pressure. If system head drops below downstream head, TAP does not supply back to system

Tap non-return flow with DP reopen

If system pressure drops below downstream pressure, TAP does not supply back to system. Supply to system (re)starts when a minimum required pressure is exceeded.

Turbine

Turbine

Turbine whose speed is controlled by its vane position, absorbed power and up/downstream conditions

VALVE

VALVE

Control or block valve with choice out of four predefined Deltares standard head loss characteristics or user characteristics (Cv Kv, Xi)

VENT (class)

VENT (discharge coeff.)

Vent with the possibility of air in/outlet, air inlet only or air outlet only. Capacity specified with discharge coefficients

VENT (inflow/outflow char.)

Vent with the possibility of air in/outlet, air inlet only or air outlet only. Capacity specified by inflow/outflow characteristics

VENT2LEG (class)

Filling pipe section with airvalve

Vent with the possibility of air in/outlet, air inlet only or air outlet only. Has two connections points, models the filling of the pipeline accurately

Venturi (class)

Venturi_open

Venturi for discharge measurement in open channel

V-weir (class)

Vee notch Weir

Thin plate weir with one or more triangular shaped notches

WEIR (class)

WEIR (two way)

Sharp edged weir, capable of simulating discharge in positive and negative direction. Storage must be modelled separately.

WEIR_S (class)

Outlet WEIR (incl. storage)

Sharp edged weir, only be used for boundary conditions. Only capable of simulating discharge in positive direction. Upstream storage is included.