Bentley WaterGEMS CONNECT Edition Help

Periodic Head-Flow Attributes

  • ID: Unique identifier assigned to this element.
  • Label: Descriptive label for this element.
  • Notes: Additional information about this element.
  • GIS-IDs: List of associated IDs on the GIS/data-source side.
  • Hyperlinks: Associate one or more web link, photo, word processing document, or other file with this element.
  • Sinusoidal: If sinusoidal, then mean value, amplitude and phase are entered; otherwise, a table of values is required. A sinusoidal quantity X has the form: X = X0 + A sin( 2 * PI * t / T + Phase ).
  • Mean Value (Head): The mean head value. Required only if sinusoidal data specified.
  • Amplitude (Head): The amplitude of the sinusoidal head curve. Required only if sinusoidal data specified.
  • Phase: Phase of the sinusoidal flow or head curve. Default option is 0 such that periodic component of head or flow is zero at time zero.
  • Period: Oscillation period of the sinusoidal flow or head curve (must be positive), or the period after which a tabular flow or head pattern repeats.
  • Mean Value (Flow): The mean flow value. Required only if sinusoidal data specified.
  • Amplitude (Flow): The amplitude of the sinusoidal flow curve. Required only if sinusoidal data specified.
  • Transient Parameter: Choices: Head, Flow
  • Flow Pattern: A collection of time/flow pairs representing the transient flow pattern.
  • Head Pattern: A collection of time/head pairs representing the transient flow pattern.
  • Elevation: Elevation at centroid of junctions, valves, and pumps; the ground elevation at tanks; the hydraulic grade at reservoirs.
  • Trace (Initial): Specify the initial trace amount at the current location.
  • Zone: Specify the zone for the element.
  • Concentration (Initial): Specify the initial concentration for the global concentration at the selected element.
  • Is Constituent Source?: If true then the selected node can inject a set concentration of the global constituent into the system.
  • Pattern (Constituent): Specify the pattern which dictates how the injected constituent concentration varies over time.
  • Constituent Source Type: Choices: Concentration, Flow Paced Booster, Setpoint Booster, Mass Booster
  • Concentration (Base): This data field allows you to specify the corresponding constituent concentration at this node over time.
  • Mass Rate (Base): This data field allows you to specify the corresponding constituent mass rate at this node over time.
  • Age (Initial): Specify the initial age of the fluid at the selected element.
  • Discharge (Calculated): Calculated discharge from the node.
  • Pressure: Calculated pressure at node.
  • Pressure Head: Calculated pressure head at node.
  • Hydraulic Grade: Calculated hydraulic grade at node.
  • Age (Calculated): Age at selected element for current time step.
  • Trace (Calculated): Trace at selected element for current time step.
  • Concentration (Calculated): Concentration at selected element for current time step.
  • Has Calculation Messages Now?: If true then the current element has associated calculation warning messages for the current time step.
  • Head (Maximum, Transient): Maximum head at node over the course of the transient simulation.
  • Head (Minimum, Transient): Minimum head at node over the course of the transient simulation.
  • Pressure (Maximum, Transient): Maximum pressure at node over the course of the transient simulation.
  • Pressure (Minimum, Transient): Minimum pressure at node over the course of the transient simulation.
  • Air Volume (Maximum, Transient): Maximum air volume at node over the course of the transient simulation. Not applicable to Reservoirs and Rating curves.
  • Vapor Volume (Maximum, Transient): Maximum vapor volume at node over the course of the transient simulation. Not applicable to Reservoirs and Rating curves.