IfcFlowDirectionEnum

Semantic definitions at the type

Type definition

This enumeration defines the flow direction at a distribution port.

For pipe-based ports, the direction is the physical flow direction.
For duct-based ports, the direction is the physical flow direction.

SOURCE

SINK

HISTORY New enumeration in IFC2.0.

Enumeration definition

Constant	Description
SOURCE	A flow source, where a substance flows out of the connection.
SINK	A flow sink, where a substance flows into the connection.
SOURCEANDSINK	Both a source and sink, where a substance flows both into and out of the connection simultaneously.
NOTDEFINED	Undefined flow direction.

Formal representations

XSD Specification

 <xs:simpleType name="IfcFlowDirectionEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="source"/>

   <xs:enumeration value="sink"/>

   <xs:enumeration value="sourceandsink"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcFlowDirectionEnum = ENUMERATION OF (

 SOURCE, 
 SINK, 
 SOURCEANDSINK, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram

	Flow Direction Enum
	Enumération des types de contrôleur de débit