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AQUIS Conversion Notes

Learn how InfoWorks converts existing AQUIS network components into an InfoWorks network and InfoWorks control objects.

Some data is not imported at all, or is only partially imported. Some AQUIS objects are imported as more complex InfoWorks objects, and additional data will be required to completely define these InfoWorks objects.

The following keywords are read from the .dat file by the IWWS AQUIS importer:

  • *HAZW - Hazen Williams Friction Formula
  • *NODE - Nodes
  • *WTOW - Reservoir
  • *LEAK - Leak
  • *HYDR - Hydrant
  • *PIPE - Pipe Segments
  • *PUMP - Pump
  • *VALV - Valves
  • *VALC - Control Valve
  • *CVTL - Non-return Valve
  • *PRVL - Pressure Reducing Valves
  • *PSVL - Pressure Sustaining Valves
  • *CASC - Continuously Regulated Air Controlled Valve
  • *ACV - Full Open / Closed Air Controlled Valve

The following keywords are read from the .cf1 file by the IWWS AQUIS importer:

  • *PNOD - Node pressure time series
  • *PROT - Pump rotation time series
  • *PPMP - Pump pressure time series
  • *QFAC - Flow factor time series
  • *VOPN - Valve opening time series
  • *HYTI - Hydrant opening time series
  • *PRES - Pressure time series applied to a reservoir
  • *PPRV - Pressure time series applied to a PRV
Note: The values are assumed to be metric values.

*HAZW - Hazen Williams Friction Formula

The AQUIS *HAZW keyword is used to switch from the Colebrook-White friction formula to the Hazen-Williams formula.

If the *HAZW keyword is not present in the AQUIS .DAT file, all pipe friction data is imported as CW.

If the *HAZW keyword is present, pipe friction data is imported as HW. The exception to this is for IWWS Pump Stations created from AQUIS node pump controls and IWWS Float Valves created from AQUIS air controlled valves. In these cases, the friction type is set to DW with a small nominal friction factor.

*NODE - Nodes

Generally, AQUIS Nodes are imported as IW Nodes. The exceptions are a follows:

  • There is a corresponding time series *PNOD or *PRES entry in the AQUIS .cf1 file: the node will be imported as an IW Fixed Head node with the .cf1 time series imported to the Fixed Head control profile.
  • The node has a corresponding *WTOW entry in the AQUIS .dat file (and no corresponding time series in the AQUIS .cf1 file): the node will be imported as an IW Reservoir node.
  • The node has a corresponding *LEAK or *HYDR entry in the AQUIS .dat file: the node will be imported as an IW Hydrant node.
AQUIS Field Description InfoWorks Data Field
"nodeid" Node Name Node ID
"zoneid" Zone Name Area Code
xcoor X Coordinate X
ycoor Y Coordinate Y
zcoor Z Coordinate Elevation
press Pressure at Node

If the pressure is specified at the AQUIS node, the node is imported as an IW Fixed Head node.

A Constant Head is imported to the Control Data calculated as: IW Constant Head = AQUIS Press + AQUIS zcoor

If the AQUIS node defines an inlet pump control, a series of Well, Pump Station and Node objects are imported.

  • The Well object is named based on the AQUIS node name appended by _Well and is set to profile mode.
  • The Pump Station is set to AUTO mode and is imported with nominal length, diameter and DW-f values of 1, 555mm and 0.015 respectively.
AQUIS Field Description InfoWorks Data Field
"res" Reservoir Name Pump Control Node in Control Data.
Zstart Level in Reservoir at which Pump Starts Pump Control On level.
Zstop Level in Reservoir at which Pump Stops Pump Control Off level.
TSStart Pump Start Pressure Time Series

The corresponding time series in the .cf1 file is imported to UPC Script in the Control data as a table.

A rule is created to turn the pump off when the controlling level is reached in the controlling reservoir.

TSStop Pump Stop Pressure Time Series

The corresponding time series in the .cf1 file is imported to UPC Script in the Control data as a table.

A rule is created to turn the pump on when the controlling level is reached in the controlling reservoir.

Q0 Initial Flow Supplied by Pump Not imported.
Qi i'th flow supplied by pump

Pump Curve named after the Node is created.

Qi, Pi and Ei are imported to Flow / Head / Mechanical Power grid of Pump Curve.

Pi i'th supply pressure corresponding to Qi
Ei i'th energy corresponding to Qi
Price Cost of running pump Not imported.
PriceT Time series containing costs Not imported.

*WTOW - Reservoir

AQUIS reservoirs are imported as IW reservoirs along with the underlying node data, unless a pressure-time series is specified in the AQUIS file, in which case the reservoir is converted to a Fixed Head node with a Constant Head set from the reservoir initial level.

If there is a corresponding time series *PRES entry in the AQUIS .cf1 file, the .cf1 time series will be imported to the Fixed Head control profile.

AQUIS Field Description InfoWorks Data Field
"nodeid" Node name Node ID
P0 Initial Pressure Imported to Control Data as Initial Depth
Pmax Maximum Water Level Top Water Level Calculated as: IW Top Water Level = AQUIS Pmax + AQUIS Node zcoor
PT Pressure Time Series ID

If a Pressure Time Series is specified in the AQUIS file, the node is imported as an IW Fixed Head node.

A Constant Head is imported to the Control Data calculated as: IW Constant Head = AQUIS WTOW P0 + AQUIS Node zcoor

The corresponding time series *PRES entry in the AQUIS .cf1 file will be imported to the Fixed Head control profile.

zup Altitude Valve Upper Level

Not currently imported

zdw Altitude Valve Lower Level

Minimum Operating Level

Calculated as: IW Minimum Operating Level = AQUIS zdw + AQUIS Node zcoor

Zi i'th Level in Level/Volume Curve Depth field of Depth/Volume curve
Vi i'th Volume in Level/Volume Curve Volume field of Depth/Volume curve

*LEAK - Leak

AQUIS leaks are imported as IW Hydrant nodes along with the underlying node data.

AQUIS Field Description InfoWorks Data Field
"nodeid" Node Name

Node ID

dleak Diameter of Leak

Hydrant Diameter

Valve Diameter

*HYDR - Hydrant

AQUIS hydrants are imported as IW Hydrant nodes along with the underlying g node data.

AQUIS Field Description InfoWorks Data Field
"nodeid" Node Name Node ID
dhydrant Diameter of Hydrant Hydrant Diameter

Valve Diameter

"TS" Name of time series The corresponding time series *HYTI entry in the AQUIS .cf1 file will be imported to the Hydrant Flow opening / time control profile.

*PIPE - Pipe Segments

AQUIS Pipes are imported as IW Pipes unless the pipe has one of the following corresponding entries in the AQUIS file:

  • *PUMP: the pipe will be imported as an IW Pump Station
  • *CVTL: the pipe will be imported as an IW Non-Return Valve
  • *VALC: the pipe will be imported as an IW valve of mode PCV
  • *VALV: the pipe will be imported as an IW valve of mode THV
  • *PRVL: the pipe will be imported as an IW valve of mode PRV
  • *PSVL: the pipe will be imported as an IW valve of mode PSV
AQUIS Field Description InfoWorks Data Field
"pipeid" Pipe Name Asset ID
"onode" Upstream Node From Node ID
"dnode" Downstream Node To Node ID
"pipetype" Type of Pipe Not imported.
diam Internal Diameter

Diameter (Set to 555mm if AQUIS diam is specified as unknown).

rough Roughness

CW-k or HW-c depending on whether the *HAZW keyword id present in the AQUIS file (Set to CW-k = 0.001 / HW-c = 20 if AQUIS roughness is specified as unknown).

enkl Local Pressure Drop Coefficient

Local Loss (Set to 0.0 if AQUIS local pressure drop coefficient is specified as unknown).

length Pipe Length Length (Set to 1m if AQUIS length is specified as unknown) .
flow Pipe Flow Not imported.
Pup Upstream Change in Pressure
Pdw Downstream Change in Pressure
pup Upstream Pressure
pdw Downstream Pressure
xi X coordinate of Pipe Bend Used to determine pipe vertices.
yi Y coordinate of Pipe Bend

*PUMP - Pump

AQUIS pumps are imported as IW Pump Stations and Pump Curves along with the underlying pipe data.

Pump Stations are set to Mode of Control PLAN, unless the AQUIS pump is controlled by a reservoir (see below).

If there is a corresponding time series *PROT entry in the AQUIS .cf1 file: the .cf1 time series will be imported to the IW UPC Script as a table with rules to control the speed of the pump.

AQUIS Field Description InfoWorks Data Field
"pipeid" Pipe Name Asset ID

A Pump Curve named after the pipe name is also created.

nact Actual Speed

Maximum Speed

Minimum Speed

If the AQUIS actual speed is greater than zero the pump is set to permanently on. If the AQUIS speed is set to zero the pump is set to permanently off.

price Energy Cost Not imported.
ndef Nominal Speed Pump Curve Nominal Speed
flowi i'th Flow in Flow / Head / Energy curve

Pump Curve Flow in Flow / Head / Mechanical Power Curve

Pi i'th Pumping Head in Flow / Head / Energy curve

Pump Curve Head in Flow / Head / Mechanical Power Curve

Ei i'th Energy consumption in Flow / Head Energy curve

Pump Curve Mechanical Power in Flow / Head / Mechanical Power Curve

chkV Indicates whether Pump is equipped with a non-return valve If the AQUIS pump is not equipped with a check valve, a reversed IW non-return valve is connected in parallel with the IW pump station to allow back flow.
"TSprice" Energy Time series Name Not imported.

In the case that the AQUIS pump is controlled by a reservoir the IW Pump Station is set to Mode of Control Auto:

AQUIS Field Description InfoWorks Data Field
PlOnOff Initial Status of pump

Pump Initial Status

Set to Active or Standby.

"Name" Name of Controlling Reservoir Control Node in Control Data
ZStart Reservoir level at which pump starts Pump Control Data On
ZStop Reservoir level at which pump stops Pump Control Data Off
"TSStop" Name of time series controlling level at which pump stops

The corresponding time series in the .cf1 file is imported to UPC Script in the Control data as a table.

A rule is created to turn the pump off when the controlling level is reached in the controlling reservoir.

"TSStart" Name of time series controlling level at which pump starts

The corresponding time series in the .cf1 file is imported to UPC Script in the Control data as a table.

A rule is created to turn the pump on when the controlling level is reached in the controlling reservoir.

*VALV - Valves

AQUIS valves are imported as IW valves of Mode THV along with the underlying pipe data with the following exception:

  • If there is a corresponding time series *VOPN entry in the AQUIS .cf1 file: the valve will be imported as an IW valve of mode TCV with the .cf1 time series imported to the date-time / opening control profile.
AQUIS Field Description InfoWorks Data Field
"pipeid" Pipe Name Asset ID
alpha Actual Opening Imported to Control Data as Valve Opening
alphai i'th Opening in Opening/Pressure Drop Coefficient curve

Imported to a Valve Curve named after the Pipe name of the AQUIS valve.

The AQUIS Kv values are converted to IW loss coefficients by: 2.592e3 x area2/Kv2

Kvi i'th Pressure Drop Coefficient in Opening/Pressure Drop Coefficient curve

*VALC - Control Valve

AQUIS control valves are imported as IW valves of mode PCV along with the underlying pipe data.

AQUIS Field Description InfoWorks Data Field
"pipeid" Pipe Name Asset ID
"nodeid" Control Node Imported to Control Data Control Node field.
upper level Upper level for switching valve open and closed Imported to Control Data in the Depth column of the Depth/Opening grid.
lower level Lower level for switching valve open and closed Imported to Control Data in the Depth column of the Depth/Opening grid.
mode Specifies normal or reverse mode switch

Imported to Control Data Depth/Opening grid.

If AQUIS mode is set to 'ULCLOSE', Opening When Falling and Opening When Rising set to 100 at upper level, 0 at lower level.

If AQUIS mode is set to 'ULOPEN', Opening When Falling and Opening When Rising set to 0 at upper level, 100 at lower level.

alphai i'th Opening in Opening/Pressure Drop Coefficient curve

Imported to a Valve Curve named after the Pipe name of the AQUIS valve.

The AQUIS Kv values are converted to IW loss coefficients by: 2.592e3 x area2/Kv2

Kvi i'th Pressure Drop Coefficient in Opening/Pressure Drop Coefficient curve

*CVTL - Non-return Valve

AQUIS non-return valves are imported as IW non-return valves along with the underlying pipe data.

AQUIS Field Description InfoWorks Data Field
"pipeid" Pipe name Asset ID
alpha Initial opening Not imported.
alphai i'th Opening in Opening/Pressure Drop Coefficient curve Pipe Local Loss

The AQUIS Opening/Pressure Drop Coefficient curve is Used to determine the Local Loss coefficient of the valve when fully open.

The AQUIS Kv value of the valve when fully open is converted to an IW loss coefficient by: 2.592e3 x area2/Kv2

This calculated value is added to the Local Pressure Drop Coefficient of the associated pipe and the total is imported to the IW pipe Local Loss field.

Kvi i'th Pressure Drop Coefficient in Opening/Pressure Drop Coefficient curve

*PRVL - Pressure Reducing Valves

AQUIS pressure reducing valves are imported as IW valves of type PRV along with the underlying pipe data.

The Control Node in the Control Data is set to the Downstream Node of the valve.

AQUIS Field Description InfoWorks Data Field
"pipeid" Pipe name. Asset ID
Hest Estimate of pressure loss Not imported.
pipeend Indicates whether controlling pressure is in pipe end or node. Not imported.
Check Indicates whether PRV has an integral non return valve Not imported
"PT" Pressure time series name The corresponding time series *PPRV entry in the AQUIS .cf1 file will be imported to the date-time / control profile.
P1, i i'th Controlling Pressure in Controlling Pressure / Resulting Pressure curve

If the controlling/resulting pressure curve in the AQUIS file has a constant resulting pressure for the last two curve points, the IW Pressure setting in the Control Data is set to this constant value.

Otherwise, the Controlling / Resulting Pressure curve is imported to the IW UPC Script as a table. For example:

TABLE PRVPressure IN NODE N-01168 PRESSURE OUT PRESSURE TYPE LINEAR
0.000000 0.000000
20.000000 10.000000
100.000000 50.000000
ENDTABLE
RULE RL_P-012559
IF TRUE THEN
NODE N-01167 PRESSURE = PRVPressure USING UPSTREAM REGULATOR
ENDIF
P2, i i'th Resulting Pressure in Controlling Pressure / Resulting Pressure curve

*PSVL - Pressure Sustaining Valves

AQUIS pressure sustaining valves are imported as IW valves of type PSV along with the underlying pipe data.

The Control Node in the Control Data is set to the Upstream Node of the valve.

AQUIS Field Description InfoWorks Data Field
"pipeid" Pipe name Asset ID
pipeend Indicates whether controlling pressure is in pipe end or node Not imported
Pressure Upstream Pressure to be maintained Control Pressure field of Control Data

*CASC - Continuously Regulated Air Controlled Valve

AQUIS continuously regulated air control valves are imported as IW float valves with continuous regulation type.

  • The Inlet Level of the IW float valve is set to the elevation of the upstream node.
  • The pipe parameters of the float valve are set to a nominal length, diameter and DW-f values of 1, 555mm and 0.015 respectively.
AQUIS Field Description InfoWorks Data Field
"nodeid" Node Name From Node ID
"wtid" Reservoir Name To Node ID
ZSTART Level at which valve is fully open

Regulating Range calculated as: ZSTOP - ZSTART

ZSTOP Level at which valve is fully closed Control Depth
alphai i'th Opening in Opening/Pressure Drop Coefficient curve

Pipe Local Loss

The AQUIS Opening/Pressure Drop Coefficient curve is Used to determine the Local Loss coefficient of the valve when fully open.

The AQUIS Kv value of the valve when fully open is converted to an IW loss coefficient by: 2.592e3 x area2/Kv2

This calculated value is added to the Local Pressure Drop Coefficient of the associated pipe and the total is imported to the IW pipe Local Loss field.

Kvi i'th Pressure Drop Coefficient in Opening/Pressure Drop Coefficient curve

*ACV - Full Open / Closed Air Controlled Valve

AQUIS air controlled valves are imported as IW float valves with On/Off regulation type.

AQUIS Field Description InfoWorks Data Field
"nodeid" Node Name From Node ID
"wtid" Reservoir Name To Node ID
alpha Initial opening Used to determine setting of Initially Open check box in Control Data.
ZSTART Level at which valve is fully open

Regulating Range calculated as: ZSTOP - ZSTART

ZSTOP Level at which valve is fully closed Control Depth
alphai i'th Opening in Opening/Pressure Drop Coefficient curve

Pipe Local Loss

The AQUIS Opening/Pressure Drop Coefficient curve is Used to determine the Local Loss coefficient of the valve when fully open.

The AQUIS Kv value of the valve when fully open is converted to an IW loss coefficient by: 2.592e3 x area2/Kv2

This calculated value is added to the Local Pressure Drop Coefficient of the associated pipe and the total is imported to the IW pipe Local Loss field.

Kvi i'th Pressure Drop Coefficient in Opening/Pressure Drop Coefficient curve

*QFAC - Flow factor time series (.cf1 file)

AQUIS flow factor time series in the .cf1 file are imported as demand categories to a Demand Diagram.

AQUIS Field Description InfoWorks Demand Diagram Data Field
"NAME" Name of flow factor type Category Comment
Type Flow factor type number Demand Category number
TGFF Type specific global factor Not imported
ti i'th time Imported to the Daily Values (Time / Factor) Grid
ffi Flow factor at the i'th time

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