Headloss Curve Data Fields

The data that makes up the headloss curves can be displayed and edited on the Headloss Curve Grid Window of the Links Grid or on the Headloss Curve Property Sheet.

The following table describes all the Headloss Curve specific data which can be used to define a Headloss Curve.

Common Data Fields

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

Headloss Curve Data

Database Table Name: hw_headloss

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

Headloss ID

Name for the Headloss Curve - maximum 32 characters

headloss_type

Text

64

 

0

 

 

 

 

 

Curve Type

Read only field. The only possible values are Built-in and User. Only User type Headloss Curves can be edited.

curve_type

Text

7

 

0

User

 

 

 

 

Minimum surcharge ratio

The value entered in the minimum surcharge ratio field will be used as the first Ratio value in the Ratio / Value (K) grid.

min_surcharge_ratio

Double

 

 

4

 

0

 

 

 

Surcharge ratio step

The Ratio values in the Ratio / Value (K) grid will be incremented by the surcharge ratio step for each K value entered in the grid.

surcharge_ratio_step

Double

 

 

4

 

0.00001

 

 

 

Surcharge ratio factor array

A series of headloss factor values against surcharge ratio values, displayed in a Ratio / Value (K) grid.

surcharge_ratio_factor_array

Array

 

 

4

 

0

 

 

 

Minimum velocity

The value entered in the minimum velocity field will be used as the first Velocity value in the velocity / value grid

min_velocity

Double

 

V

4

 

 

 

 

 

Velocity step

The velocity ratio values in the velocity / value grid will be incremented by the minimum velocity step for each velocity ratio value entered in the grid.

velocity_step

Double

 

V

4

 

0.00001

 

 

 

Velocity factor array

A series of velocity ratio values against velocity values, displayed in a velocity / ratio grid.

velocity_factor_array

Array

 

 

4

 

 

 

 

 

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.

notes

Memo

 

 

0

 

 

 

 

 

Headloss Curves

Property Sheets

Links Grid