Fixed Head Node Data Fields

Fixed Head Node data fields can be edited on the Fixed Head Node Grid View of the Nodes Grid or the Fixed Head Property Sheet.

The following table describes all the Fixed Head Node specific data needed to define a Fixed Head Node.

Further information, including units details, about all the Network Object fields stored in the Master Database can be found in the data fields topics listed in the Network Data Fields topic.

Fields that are common to the majority of objects can be found in the Common Data Fields topic.

The pages on the Property Sheet are listed below. When the network object has Control Data additional pages may be displayed on the property sheet. These pages are marked as follows:

- additional page displayed when Control Data is open

Node Definition Page
User Page - see Common Data Fields topic for details of user fields
Hyperlinks Page - see Common Data Fields topic for details of hyperlinks fields
Notes Page - see Common Data Fields topic for details of notes fields
Fixed Head Control Page
Node Control Page
Water Quality Profile Page
Water Quality Turbidity Profile
Transient - Pressure Page - fields only enabled when InfoWorks TS (Transient System) licence is present
Control Notes Page

The Grid column tells you if the data item is available for editing in the grid view.

Fixed Head Node Data

Database Table Name: wn_fixed_head

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	Error Limits

Field Name

Help Text

Flag

Grid

Property Page

Size

Precision

Units

Database Field

Data Type

Default

Error Lower Limit

Error Upper Limit

Warning Lower Limit

Warning Upper Limit

Node ID

Name of the node

YES

node_id

Text

Area Code

The Area Code parameter is used for closer spatial modelling of demand - each node is allocated to an area and demand can then be factored by area.

The factor is set using the Demand Scaling Editor.

YES

area

Text

Asset ID

For reference only. Designed as a reference to an asset database, but could be used for anything.

YES

asset_id

Text

Fire Zone

The Fire Zone field is used when checking minimum pressure constraints during Hydrant Testing simulations. Different pressure constraints may be applied to nodes in a given Fire Zone to nodes outside of the Fire Zone. See Fire Flow Data for more details.

YES

fire_zone

Text

System Type

For information. Type in a system type or select an option from the dropdown list:

Database Value	Description	Help Text
POTABLE	Potable	System used to transport water of a quality suitable for drinking.
RAW	Raw	System used to transport water used as a source supply for potable water before it has been treated.
RECYCLED	Recycled	System used to transport wastewater effluent that has been treated to provide a non-potable supply suitable for uses such as irrigation.

YES

system_type

Text

Isolation Area

Area identifier used to identify groups of objects to be closed when carrying out a Critical Link Analysis.

YES

isolation_area

Text

X coordinate

YES

Double

Y coordinate

YES

Double

Elevation

Elevation above datum of pipe invert.

YES

Double

-999

9999

Ground Level

Elevation above datum of ground surface.

YES

ground_level

Double

-999

9999

Highest Property Level

Elevation above datum level of the highest property supplied by the node

YES

highest_property

Double

-999

9999

InfoNet Unique ID

The InfoNet Unique ID and InfoNet Network ID are unique identifiers associated with the corresponding object and network in an InfoAssetdatabase. When importing from InfoNet, these identifiers can be copied from the InfoNet database in order to maintain links between the two networks.

YES

asset_uid

GUID

InfoNet Network ID

See InfoNet Unique ID

YES

asset_network_uid

GUID

Fixed Head Node Control Data

Database Table Name: wn_ctl_fixed_head

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	Database Names
	Error Limits

Field Name

Help Text

Flag

Grid

Property Page

Size

Precision

Units

Database Field

Data Type

Default

Error Lower Limit

Error Upper Limit

Warning Lower Limit

Warning Upper Limit

Constant Head

Fixed Water Level

YES

fixed_level

Double

Date-Time/Head Grid

The Head Grid allows you to edit a list of head against date/time values. The Head Grid can only be viewed and edited on the Fixed Head Control Page and is fully described there.

Database Table Name: wn_ctl_level_profile

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	Error Limits

Position in Data Structure	Field Name	Help Text	Flag	Size	Units	Database Table	Database Field	Type	Default	Error Lower Limit	Error Upper Limit	Warning Lower Limit	Warning Upper Limit
1	Date & Time	Date and time value	YES			wn_ctl_level_profile	date_time
2	Head	Water level at this date and time	NO		Z	wn_ctl_level_profile	water_level	Double		-999	9999

YES

levels

Array

Linear Profile

This checkbox decides if values in the profile grid are interpolated.

checked - linear interpolation is carried out between values
unchecked - The value entered in the grid changes at each time point, and is maintained until the next time point is reached.

YES

linear_levels_profile

Boolean

Before First Point (fixed head control)

Database Value

Description

Help Text

Extend Back

The first value in the profile grid is extended back to the start of the simulation (and repeat period for repeated profiles).

Extrapolate Back

Applies to Linear Profiles only: the first two values in the profile grid are used to extrapolate back to the start of the simulation (and repeat period for repeated profiles).

(If Extrapolate Back is selected for a non linear profile, the profile will be extended back.)

Zero/Unchanged

A value of zero or "off" is applied from the start of the simulation until the date / time of the first value in the profile grid (and from the start of the repeat period for repeated profiles).

YES

before_levels_profile

Integer

After Last Point (fixed head control)

Database Value

Description

Help Text

Extend Forward

The last value in the profile grid is extended to the end of the simulation or repeat period.

Extrapolate Forward

Applies to Linear Profiles only: the last two values in the profile grid are used to extrapolate forward to the end of the simulation or repeat period.

(If Extrapolate Forward is selected for a non linear profile, the profile will be extended forward.)

YES

after_levels_profile

Integer

Repeat Profile (fixed head control)

Check the Repeat Profile box to repeat a profile (from 00:00 for the selected Repeat Period) for the duration of the simulation.

IMPORTANT

When using the Repeat Profile option; if the defined profile spans over the selected Repeat Period, the profile will not be repeated.

YES

repeat_levels_profile

Boolean

Repeat Period (fixed head control)

Profile period which will be repeated throughout simulation, if the Repeat Profile box is checked.

Database Value	Description	Help Text
0	1 day	Repeat Period
1	1 week	Repeat Period
2	2 weeks	Repeat Period

YES

repeat_levels_period

Integer

Live Data Point ID

Name of the associated Live Data Point

YES

100

live_data_point_id

Text

Initial Concentration

The initial concentration of the substance being tested at the start of the simulation. Only one substance can be tested at a time.

These nodes are inputs to the system. The Initial Concentration represents a continuous input concentration over the period of the simulation.

If you have defined a time dependent concentration for a node, the time dependent concentration overrides this value between its start and end times.

YES

WN_C

initial_concentration

9999

SourceType

Method by which concentration profile defined in the Water Quality grid is applied during the simulation.

Database Value	Description	Help Text
0	Fixed Concentration	Concentration at a node is set to the profile defined in the Water Quality grid. Use a concentration value of < 0 in the profile to switch off the concentration source and allow inflow from upstream pipes to set concentration at the node.
1	Additional Concentration	Concentration profile defined in the Water Quality grid is applied to water leaving the node in addition to the calculated concentration.
2	Concentration Booster	Concentration in water leaving the node is set to the profile defined in the Water Quality grid (provided that the concentration calculated during the simulation is less than the defined concentration).
3	Additional Mass Flow	Mass Flow profile defined in the Water Quality grid is applied to water leaving the node in addition to the calculated concentration.

YES

wq_source_type

Integer

Initial Age of Water (hr)

Age of water at the start of the simulation

YES

initial_age

Double

Date-Time/Concentration Grid

The concentration of pollutant entering the system at this node between the Water Quality start and end times. This concentration does not depend on flow rate. These values can be interpolated, depending on the state of the Linear WQ Profile check box.

Database Table Name: wn_ctl_node_wq_conc

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	Database Names
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Position in Data Structure	Field Name	Help Text	Flag	Size	Units	Database Table	Database Field	Type	Default	Error Lower Limit	Error Upper Limit	Warning Lower Limit	Warning Upper Limit
1	Date Time	The date and time at which the concentration value takes effect.	NO			wn_ctl_node_wq_conc	wqc_date_time
2	Conc.	The concentration of pollutant entering at this node at this time	NO		WN_C	wn_ctl_node_wq_conc	wqc_concentration		0.0		9999

YES

wq_profile

Array

Date-Time/Mass Flow Grid

Mass flow profile grid displayed when Additional Mass Flow is selected in the Source Type field.

Database Table Name: wn_ctl_node_wq_flow

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	Size, Type and Units
	Database Names
	Error Limits

Position in Data Structure	Field Name	Help Text	Flag	Size	Units	Database Table	Database Field	Type	Default	Error Lower Limit	Error Upper Limit	Warning Lower Limit	Warning Upper Limit
1	Date Time	The date and time at which the mass flow value takes effect.	NO			wn_ctl_node_wq_flow	wqf_date_time
2	Mass Flow	The mass flow rate of pollutant entering at this node at this time	NO		WN_MF	wn_ctl_node_wq_flow	wqf_additional_mass		0.0	0	9999

YES

wq_flow_profile

Array

Linear WQ Profile

This checkbox decides if values in the profile grid are interpolated.

checked - linear interpolation is carried out between values
unchecked - The value entered in the grid changes at each time point, and is maintained until the next time point is reached.

YES

linear_wq_profile

Boolean

Before First Point (water quality profile)

Database Value

Description

Help Text

Extend Back

The first value in the profile grid is extended back to the start of the simulation (and repeat period for repeated profiles).

Extrapolate Back

Applies to Linear Profiles only: the first two values in the profile grid are used to extrapolate back to the start of the simulation (and repeat period for repeated profiles).

(If Extrapolate Back is selected for a non linear profile, the profile will be extended back.)

Zero/Unchanged

A value of zero or "off" is applied from the start of the simulation until the date / time of the first value in the profile grid (and from the start of the repeat period for repeated profiles).

YES

before_wq_profile

Integer

After Last Point (water quality profile)

Database Value

Description

Help Text

Extend Forward

The last value in the profile grid is extended to the end of the simulation or repeat period.

Extrapolate Forward

Applies to Linear Profiles only: the last two values in the profile grid are used to extrapolate forward to the end of the simulation or repeat period.

(If Extrapolate Forward is selected for a non linear profile, the profile will be extended forward.)

YES

after_wq_profile

Integer

Repeat Profile (water quality profile)

Check the Repeat Profile box to repeat a profile (from 00:00 for the selected Repeat Period) for the duration of the simulation.

IMPORTANT

When using the Repeat Profile option; if the defined profile spans over the selected Repeat Period, the profile will not be repeated.

YES

repeat_wq_profile

Boolean

Repeat Period (water quality profile)

Profile period which will be repeated throughout simulation, if the Repeat Profile box is checked.

Database Value	Description	Help Text
0	1 day	Repeat Period
1	1 week	Repeat Period
2	2 weeks	Repeat Period

YES

repeat_wq_period

Integer

Bulk Coeff Mode

Method by which Bulk Coefficient is applied to water entering the system at the node:

Database Value

Description

Help Text

Not active

Bulk coefficient for the node is not applied to water entering the system at the node.

WQ bulk coefficient values specified at individual pipes will be used to calculate change in concentration.

Replace

The Bulk coefficient specified at the node will override the WQ bulk coefficient values specified at individual pipes when calculating change in concentration.

Scale

The Bulk coefficient specified at the node will be applied as a multiplying factor to WQ bulk coefficient values specified at individual pipes.

YES

wq_bulk_coeff_mode

Integer

Bulk Coeff

Reaction rate parameter used to calculate the change in concentration of a substance as it reacts with material in the bulk flow.

The value specified here is applied to water entering the system at the node.

The bulk coefficient has a positive value if the concentration of the substance grows over time, and a negative value if the concentration decays over time.

YES

wq_bulk_coeff

Double

Res Bulk Coeff Mode

Method by which Res Bulk Coefficient is applied to water entering the system at the node:

Database Value

Description

Help Text

Not active

Res bulk coefficient for the node is not applied to water entering the system at the node.

WQ reaction coefficient values specified at individual reservoirs will be used to calculate change in concentration.

Replace

The Res bulk coefficient specified at the node will override the WQ reaction coefficient values specified at individual reservoirs when calculating change in concentration.

Scale

The Res bulk coefficient specified at the node will be applied as a multiplying factor to WQ Reaction coefficient values specified at individual reservoirs.

YES

wq_res_bulk_coeff_mode

Integer

Res Bulk Coeff

Reaction rate parameter used to calculate the change in concentration of a substance as it reacts with material in a reservoir.

The value specified here is applied to water entering the system at the node.

The bulk coefficient has a positive value if the concentration of the substance grows over time, and a negative value if the concentration decays over time.

YES

wq_res_bulk_coeff

Double

Initial Turbidity

Initial turbidity at node at start of simulation.

See Water Quality - Turbidity Analysis for further information.

YES

WN_TURBIDITY

wq_initial_turbidity

Single

9999

Turbidity Source Type

Method by which turbidity profile defined in the Turbidity grid is applied during the simulation.

Database Value

Description

Help Text

Fixed Turbidity

Turbidity at node is set to the profile defined in the Turbidity grid.

Use a turbidity value of < 0 in the profile to switch off the turbidity source and allow turbidity from upstream pipes to set turbidity at the node.

Additional Turbidity

Turbidity profile defined in the Turbidity grid is applied to water leaving the node in addition to the calculated turbidity.

See Water Quality - Turbidity Analysis for further information.

YES

wq_turb_source_type

Integer

Turbidity Profile

Database Table Name: wn_ctl_node_wq_turb

A series of time / turbidity pairs that define the turbidity profile at the node. These values can be interpolated, depending on the state of the Linear Profile flag.

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	Size, Type and Units
	Database Names
	Error Limits

Position in Data Structure	Field Name	Help Text	Flag	Size	Units	Database Table	Database Field	Type	Default	Error Lower Limit	Error Upper Limit	Warning Lower Limit	Warning Upper Limit
1	Date Time	Date and time value	YES			wn_ctl_node_wq_turb	wqt_date_time	Date/Time
2	Turbidity	Turbidity at node	YES		WN_TURBIDITY	wn_ctl_node_wq_turb	wqt_turbidity	Single	0.0		9999

See Water Quality - Turbidity Analysis for further information.

wq_turbidity_profile

Array

Linear Turbidity Profile

This checkbox decides if values in the Turbidity profile grid are interpolated:

checked - linear interpolation is carried out between values
unchecked - The value entered in the grid changes at each time point, and is maintained until the next time point is reached.

YES

wq_turb_linear_profile

Boolean

Before First Point (Turbidity)

Database Value

Description

Help Text

Extend Back

The first value in the profile grid is extended back to the start of the simulation (and repeat period for repeated profiles).

Extrapolate Back

Applies to Linear Profiles only: the first two values in the profile grid are used to extrapolate back to the start of the simulation (and repeat period for repeated profiles).

(If Extrapolate Back is selected for a non linear profile, the profile will be extended back.)

Zero/Unchanged

A value of zero or "off" is applied from the start of the simulation until the date / time of the first value in the profile grid (and from the start of the repeat period for repeated profiles).

YES

wq_turb_before_profile

Integer

After Last Point (Turbidity)

Database Value

Description

Help Text

Extend Forward

The last value in the profile grid is extended to the end of the simulation or repeat period.

Extrapolate Forward

Applies to Linear Profiles only: the last two values in the profile grid are used to extrapolate forward to the end of the simulation or repeat period.

(If Extrapolate Forward is selected for a non linear profile, the profile will be extended forward.)

YES

wq_turb_after_profile

Integer

Repeat Profile (Turbidity)

Check the Repeat Profile box to repeat a profile (from 00:00 for the selected Repeat Period) for the duration of the simulation.

IMPORTANT

When using the Repeat Profile option; if the defined profile spans over the selected Repeat Period, the profile will not be repeated.

YES

wq_turb_repeat_profile

Boolean

Repeat Period (Turbidity)

Profile period which will be repeated throughout simulation, if the Repeat Profile box is checked.

Database Value	Description	Help Text
0	1 day	Repeat Period
1	1 week	Repeat Period
2	2 weeks	Repeat Period

YES

wq_turb_repeat_period

Integer

Enable Surge

A change in pressure at the fixed head will produce a transient.

Check this option to enable Transient Simulation fields.

YES

iwts_enable_surge_SPD

Boolean

Time/Pressure grid

Transient Simulation field.

Profile defining pressure variation at the well at a time relative to the start of the simulation.

Database Table Name: wn_ctl_iwts_surge_pres_tme

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	Database Names
	Error Limits

Position in Data Structure	Field Name	Help Text	Flag	Size	Units	Database Table	Database Field	Type	Default	Error Lower Limit	Error Upper Limit	Warning Lower Limit	Warning Upper Limit
1	Time	The time (relative to the start of the simulation) at which the pressure value takes effect.	NO			wn_ctl_iwts_surge_pres_tme	time	Double	0.0
2	Pressure	The pressure at the node at the corresponding time	NO		WN_P	wn_ctl_iwts_surge_pres_tme	pressure	Double	0.0

iwts_surge_pressure_time

Array

Notes

You can keep freeform notes about any object in your network. The notes field can be up to 64,000 characters in size, or about 10 pages of printed text.

YES

notes

Memo

Node ID

Name of the node

YES

node_id

Text

Asset ID

For reference only. Designed as a reference to an asset database, but could be used for anything.

YES

asset_id

Text

Time Dependent Concentration

This field is obsolete and is not displayed in the interface. This data is now entered in the Water Quality Grid.

The field is maintained for backwards compatibility with old CSV data files. If this value is set when the data is imported, InfoWorks will calculate appropriate values for the Water Quality Grid.

YES

WN_C

time_related_concentration

9999

WQ Start Date & Time

This field is obsolete and is not displayed in the interface. This data is now entered in the Water Quality Grid.

The field is maintained for backwards compatibility with old CSV data files. If this value is set when the data is imported, InfoWorks will calculate appropriate values for the Water Quality Grid.

YES

wq_start_date_time

WQ End Date & Time

This field is obsolete and is not displayed in the interface. This data is now entered in the Water Quality Grid.

The field is maintained for backwards compatibility with old CSV data files. If this value is set when the data is imported, InfoWorks will calculate appropriate values for the Water Quality Grid.

YES

wq_end_date_time

Exceptional Flow

A read only check box displayed only on the grid view. This box is checked if data has been entered in the Exceptional Flow Grid on the property sheet

YES

exf_selected

Boolean

Water Quality

A read only check box displayed only on the grid view. This box is checked if data has been entered in the Water Quality Grid on the property sheet

YES

wqc_selected

Boolean

Fixed Head Node Results

Results fields are displayed on the grid when opened while viewing a replay of a simulation, and on a special results page placed at the front of Property Sheets displayed while viewing a simulation replay.

For details of results fields for nodes, see the Node Results Data Fields topic.

Fixed Head Node

Network Data Fields

Common Data Fields

Node Results Data Fields