modelFlowJoin

Joins two gas flows

Information

This component allows to join two separate flows into one. The model is based on mass and energy balance equations, without any mass or energy buildup, and without any pressure drop between the inlet and the outlets.

Since stream connectors are used in the library, this component is actually not necessary to handle a three-way connection. It can be used for a finer tuning of the simplified model for initialization using homotopy, in particularly hard-to-initialize systems, and it is included in the library for backwards compatibility.

Modelling options

If rev_inlet1, rev_inlet2 or rev_outlet is true, the respective flows reversal is allowed. If at least ona among these parameters is false, it is possible to set checkFlowDirection.

If checkFlowDirection is true, when the flow reversal happen where it is not allowed, the error message is showed.

Parameters

Type	Name	Default	Description
Medium.MassFlowRate	wzero	1e-9	Small flowrate to avoid singularity in computing the outlet enthalpy and composition
Boolean	allowFlowReversal	system.allowFlowReversal	= true to allow flow reversal, false restricts to design direction
Boolean	rev_inlet1	allowFlowReversal	Allow flow reversal at inlet1
Boolean	rev_inlet2	allowFlowReversal	Allow flow reversal at inlet2
Boolean	rev_outlet	allowFlowReversal	Allow flow reversal at outlet
Boolean	checkFlowDirection	false	Check flow direction

Connectors

Type	Name	Default	Description
FlangeA	inlet1
FlangeA	inlet2
FlangeB	outlet

Components

Type	Name	Default	Description
ThermoPower.System	system		System wide properties

Name	Description
Medium

Revisions

30 Oct 2014 by Francesco Casella:
Bug fixing.
23 May 2008 by Luca Savoldelli:
Allow flows reversal option added.
20 Dec 2004 by Francesco Casella:
Adapted to Modelica.Media.
5 Mar 2004 by Francesco Casella:
First release.