Node

module wntr.network.base

class Node

Bases: object

Base class for nodes.

For details about the different subclasses, see one of the following: Junction, Tank, and Reservoir

Constructor

This is an abstract class and should not be instantiated directly.

Parameters:

• wn (WaterNetworkModel) – WaterNetworkModel object

• name (string) – Name of the node (must be unique among nodes of all types)

Attributes

name	The name of the node (read only)
node_type	The node type (read only)
coordinates	The node coordinates, (x,y)
initial_quality	The initial quality (concentration) at the node
tag	A tag or label for the node

Read-only simulation results

The following attributes are read-only. The values are the final calculated value from a simulation.

head	(read-only) the current simulation head at the node (total head)
demand	(read-only) the current simulation demand at the node (actual demand)
leak_demand	(read-only) the current simulation leak demand at the node
leak_status	(read-only) the current simulation leak status at the node
leak_area	(read-only) the current simulation leak area at the node
leak_discharge_coeff	(read-only) the current simulation leak discharge coefficient

---

__init__(wn, name)

to_dict()

Dictionary representation of the node

to_ref()

property coordinates

The node coordinates, (x,y)

Type:

tuple

property demand

(read-only) the current simulation demand at the node (actual demand)

Type:

float

property head

(read-only) the current simulation head at the node (total head)

Type:

float

property initial_quality

The initial quality (concentration) at the node

Type:

float

property leak

(read-only) the current simulation leak area at the node

Type:

float

property leak_area

(read-only) the current simulation leak area at the node

Type:

float

property leak_demand

(read-only) the current simulation leak demand at the node

Type:

float

property leak_discharge_coeff

(read-only) the current simulation leak discharge coefficient

Type:

float

property leak_status

(read-only) the current simulation leak status at the node

Type:

bool

property name

The name of the node (read only)

Type:

str

property node_type

The node type (read only)

Type:

str

property pressure

(read-only) the current simulation pressure at the node

Type:

float

property quality

(read-only) the current simulation quality at the node

Type:

float

property tag

A tag or label for the node

Type:

str