modelFlowJoin

Joins two water/steam 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_in1, rev_in2 or rev_out 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
Boolean	allowFlowReversal	system.allowFlowReversal	= true to allow flow reversal, false restricts to design direction
SI.MassFlowRate	wzero	1e-9	Small flowrate to avoid singularity in computing the outlet enthalpy
Boolean	rev_in1	allowFlowReversal	Allow flow reversal at in1
Boolean	rev_in2	allowFlowReversal	Allow flow reversal at in2
Boolean	rev_out	allowFlowReversal	Allow flow reversal at out
Boolean	checkFlowDirection	false	Check flow direction

Connectors

Type	Name	Default	Description
FlangeB	out
FlangeA	in1
FlangeA	in2

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.
16 Dec 2004 by Francesco Casella:
Standard medium definition added.
1 Oct 2003 by Francesco Casella:
First release.