Time Varying Results grid

This grid can be used to display:

all time varying results for a single network object
a single time varying result for a selection of network objects

The grid is displayed by gridding results for a single object or by gridding results for selected objects.

Note: If there are no results for an object (for example if a sub-network is simulated), the grid cells for that object will be empty.

Grid features

Item

Description

Time varying results fields for nodes

See the following table: Time varying results - Nodes.

Time varying results fields for links

See the following table: Time varying results - Links.

Context menu

Copy	Copies the value(s) of the selected cell(s) to the clipboard. Several cells / rows / columns can be copied simultaneously.
Freeze Columns	Available from the column headers when one or more columns are selected. Moves the columns to the left side of the grid, and marks them with an extra thick line. When you scroll columns sideways, these frozen columns do not move.
Unfreeze All Columns	Available from the column headers when columns have previously been frozen. Unfreezes all frozen columns.
Various sorting options	Sorts data in a single column or in selected rows / columns.

Column order

Columns can be rearranged by clicking the column header and dragging the column to the required location in the grid.

Time varying results - Nodes

Results field

Description

Node type

Use

Hydrant Flow

Flow due to percentage opening of hydrant valve

HYDRANT

Opening

Percentage opening of hydrant valve

HYDRANT

Demand

Node	Description
Basic Nodes	Total demand on node. Calculated as sum of: Demands defined on Node Demand Page Exceptional demand defined on Exceptional Flow Profile Page Flow due to hydrant operation defined on Hydrant Flow Profile Page (If there is exceptional flow and/or flow due to hydrant operation, and the Keep Local Demandcheck box on the Node Control page is not checked, demands specified on the Node Demand Page will not be applied).
Reservoir Node	Total demand on node. Calculated as sum of: Demands defined on Node Demand Page Exceptional Flow defined on Exceptional Flow Profile Page
Transfer Nodes	Total demand on node. Calculated as the sum of: Demands defined on Node Demand Page Transfer Node Flow defined on Transfer Node Flow Control Page
Hydrant Node	Total demand on node. Calculated as the sum of: Demands defined on Node Demand Page Exceptional Flow defined on Exceptional Flow Profile Page Flow due to hydrant operation defined on Hydrant Flow Profile Page (If the hydrant is in operation, and the Keep Local Demand check box on the Node Control page is not checked, the demands defined on the Node Demand Page are not applied)

BASIC

RESERVOIR

TRANSFER

HYDRANT

Concentration

The concentration at the node of the pollutant being modelled in the Water Quality simulation.

If this is not a Water Quality Run this column is hidden.

ALL

FFA Flow

The fire flow at each node.

Fire Flow Availability simulations only.

ALL

FFA Residual Pressure

The residual pressure at each node.

Fire Flow Availability simulations only.

ALL

Head

Head at node at timestep t

ALL

Leakage

Total leakage on node. Calculated as sum of pressure related leakage and constant leakage loss defined on Node Demand Page.

ALL

Pressure

Pressure at node at the current timestep

ALL

Status

The value for Status at each timestep can be one of the following:

isolated	The node is isolated from the network for the duration of the simulation
temporarily isolated	The node is isolated in the current timestep

ALL

Trace 01 <node ID>

Trace 10 <node ID>

The percentage of water at this node that has come via the Trace Node (selected in the Water Quality Options dialog when scheduling a Water Quality Simulation). This can be useful in analysing systems that draw water from more than one source. See Water Quality Model for more details on how this is calculated.

Columns will only be displayed if there are Trace Nodes selected in the simulation.

If this is not a Water Quality Run these columns are hidden.

ALL

Dominant Source

Indication of which source contributes the most to water reaching the node, where the sources are Trace Nodes (selected in the Water Quality Options dialog when scheduling a Water Quality Simulation).

Dominant Source Result	Description
Mixed	Sources sum to 100% but no trace exceeds 50%
Doubled	Sum of source percentages exceeds 100%
Unknown	Sum of source percentages is less than 100%
Tr <trace number>:<trace Node ID> (where the trace number is a number between 1 and 10 corresponding to the trace node)	Sum of source percentages equals 100% (within a 5% tolerance) and the reported source node provides > 50% of water reaching the node.

This column will only be displayed if there are Trace Nodes selected in the simulation.

If this is not a Water Quality Run this column is hidden.

ALL

Age of Water

This factor gives an estimate of the age of water at various points in the system. This can be used as a rule of thumb measure of underlying water quality.

Any new water entering the system at reservoirs or source nodes has age zero, unless an Initial Age of Water has been specified. InfoWorks calculates the average length of time the water at this node has spent in the system before arriving here. See Water Quality Model for more details on how this is calculated.

If this is not a Water Quality Run this column is hidden.

ALL

Turbidity

Turbidity at the node

Applicable when carrying out Turbidity Analysis only.

ALL

Load (In - Out)

Net rate of inflow into reservoir (Inflow minus Outflow)

RESERVOIR

Deficit

The reservoir may become empty because the outflows exceed the inflows. InfoWorks allows computation to continue with the assumption that reservoir head remains at the reservoir bottom level.

The deficit is the amount of water needed to maintain head at that level.

RESERVOIR

Depth

Vertical distance from reservoir bottom level to water level

RESERVOIR

Inflow

Rate of flow into the Reservoir

RESERVOIR

Outflow

Rate of flow out of the Reservoir

RESERVOIR

Percentage Full

Volume of water in the reservoir expressed as a percentage of available capacity. (Volume of water above the reservoir Minimum Operating Level specified in the Reservoir Parameters Page of the Reservoir Property Sheet).

RESERVOIR

Spill

The total amount of water lost to the system due to reservoir overflow

RESERVOIR

Volume

Volume of water in the reservoir

RESERVOIR

CO2 Equivalent Loss

Applicable when carrying out Sustainability Analysis only.

Daily rate of energy loss at customer connections expressed as a carbon dioxide equivalent.

ALL

Energy Loss

Applicable when carrying out Sustainability Analysis only.

Daily rate of energy loss at customer connections.

ALL

Key to symbols

Time varying results - Links

Results field

Description

Link type

Use

Headloss per unit distance

Difference in head between upstream node and downstream node divided by link length.

ALL

Velocity

Distance travelled by water through link per unit time.

ALL

Flow

Volume of water flowing through link per unit time.

ALL

DW Friction Factor

Darcy Weisbach friction coefficient. See Pipe Calculations for more details.

ALL

Head Difference

Difference in head between upstream and downstream nodes of pipe.

Headloss

Loss in pressure between upstream and downstream nodes of pipe due to frictional and minor losses affected by flow in the pipe.

ALL

High Pressure

Highest pressure experienced along pipe at timestep (t).

The calculation of this result depends on whether the Advise on Hydraulic Transients option is switched on (see Simulation Options dialog):

Transients Advisor

High Pressure at timestep (t)

OFF (default)

Higher of connected node pressures at (t)

Higher of connected node pressures (t)

Transient Pressure (t)

ALL

Low Pressure

Lowest pressure experienced along pipe at timestep (t).

The calculation of this result depends on whether the Advise on Hydraulic Transients option is switched on (see Simulation Options dialog):

Transients Advisor

High Pressure

OFF (default)

Lower of connected node pressures at (t)

Lower of connected node pressures (t)

Transient Pressure (t)

ALL

Pressure Criticality

Ratio of pressure experienced in the link at time (t) to allowable working pressure calculated as:

High Pressure at timestep (t) / Pressure Class

Pressure Criticality will be zero, if a pressure class has not been specified for the link.

ALL

Pipe Carrying Capacity

The concentration of sediment that can be held within the flow at the current timestep.

If Pipe Carrying Capacity is less than the sediment deposition limit, sediment is being deposited in the pipe.

If Pipe Carrying Capacity is greater than the sediment suspension limit, sediment is eroded from the pipe bed and remains in suspension.

See WatSed Pipe Sedimentation Model for more details.

ALL

Sediment Status

The value for Sediment Status at each timestep can be one of the following:

Undefined	The current state is indeterminate
Deposit	Sediment is being deposited because pipe carrying capacity is below the Deposition Limit set in the Run.
Transport	Pipe carrying capacity is between the Deposition Limit and the Suspension Limit set in the Run. No additional erosion or deposition is occurring
Re-suspension	Sediment is being eroded because pipe carrying capacity is above the Suspension Limit set in the Run.

ALL

Status

The value for Status at each timestep can be one of the following:

closed	the link is closed for the duration of the simulation
isolated	the link is isolated from the network for the duration of the simulation
temporarily closed	the link is closed in the current timestep
temporarily isolated	the link is isolated in the current timestep

ALL

Transient Pressure

Applicable to a simulation with Advise on Hydraulic Transients option switched on (see Simulation Options dialog).

Transient pressure amplitude calculated as:

dH = (c/g).dV

where:

c = wave celerity

g = acceleration due to gravity

dV = change in velocity (between current timestep and previous timestep)

See Transients Advisor for more information.

ALL

Cost

Cost due to daily rates charges

PST

Cumulative Cost

Total cost due to daily rates charges from start of simulation to present timestep

PST

Head

Pumping head

PST

Loss

Pump energy loss

PST

Total pumps on

Number of pumps currently running in pumping station

PST

Power

Electric Power used by pumps

PST

State

The value for State at each timestep can be one of the following:

0	OFF
1	ON

PST

Electricity Tariff

Daily rates charge specified in Electricity Tariff on Daily Rates Page and Daily Rate Usage Page.

PST

Variable Speed

Speed of pump (variable speed pumps only)

PST

PST Energy

Energy usage at Pump Station at current timestep

PST

Opening

Percentage valve opening. If the valve is not a control valve, percentage opening will be 100%

VALVE

Pressure

Pressure at downstream node of valve link

VALVE

CO2 Equivalent Loss

Applicable when carrying out Sustainability Analysis only.

Daily rate of energy loss due to friction and minor losses expressed as a carbon dioxide equivalent.

For pumping stations this is the loss in the bypass pipe, if active.

ALL

Energy Loss

Applicable when carrying out Sustainability Analysis only.

Daily rate of energy loss due to friction and minor losses.

For pumping stations this is the loss in the bypass pipe, if active.

ALL

PST CO2 Equivalent

Applicable when carrying out Sustainability Analysis only.

Total energy usage expressed as a carbon dioxide equivalent.

PST

Shear Stress

The applied hydraulic shear stress in the pipe.

ALL

Stored Turbidity Ratio

The ratio of the amount of discolouration material to the total amount of such material bound to the pipe wall.

Applicable when carrying out Turbidity Analysis only.

ALL

Peak Turbidity

The peak value of the turbidity in all segments in the pipe at the completion of the water quality time loop.

Applicable when carrying out Turbidity Analysis only.

ALL

Key to symbols

Results grid windows

	Used for Water Quality simulations only
	Results fields for Price of Water. These are only displayed when Price of Water data is included in the simulation
	Used for WatSed simulations only. See WatSed Simulations for more information on this simple model for indicating potential problems with sediment deposits
	Results fields for Fire Flow simulations only.

	Used for Water Quality simulations only
	Results fields for Price of Water. These are only displayed when Price of Water data is included in the simulation
	Used for WatSed simulations only. See WatSed Simulations for more information on this simple model for indicating potential problems with sediment deposits
	Results fields for Fire Flow simulations only.