Head Discharge Table Data Fields

The data that makes up the Head Discharge Table can be displayed and edited on the Head Discharge Grid Window of the Links Grid or on the Head Discharge Property Sheet.

To view and edit all head discharge data, use the Property Sheet.

The following table describes all the Head Discharge Table data.

Common Data Fields

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

Head Discharge Table Data

Database Table Name: hw_head_discharge

Show Columns	Database Names
	Size, Type and Units
	Defaults and Error Limits

Field Name

Help Text

Database Field

Data Type

Size

Units

Precision

Default

Error Lower Limit

Error Upper Limit

Warning Lower Limit

Warning Upper Limit

Head Discharge ID

Name for the Head Discharge Table

head_discharge_id

Text

Description

Space for a more detailed description

head_discharge_description

Text

Head discharge power table

The records for the head, discharge and power are entered on the grid in the Head discharge power table window which is displayed by clicking on the button. The values entered on the grid will be displayed on the adjacent graph in the Head discharge power table window.

Normally data should be stored in ascending order of head. However, Rotodynamic pumps and Variable Frequency Drive pumps, which also make use of the power record, require the data to be listed in descending order.

Show Columns	Database Names
	Size, Type and Units
	Defaults and Error Limits

Field Name	Description	Database Field	Data Type	Units	Precision
Head	The head difference between the water levels upstream and downstream of the structure (for screw pumps this is the difference between the water level and the base level)	head	Double	Y	4
Discharge	The discharge corresponding to this head	discharge	Double	Q	4
Power	The mechanical power corresponding to this head	power	Double	WN_POW	4

HDP_table

Head Discharge Tables

Links Grid

Property Sheets