Volume Flow - MapleSim Help
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Volume Flow

Enforce constant volume flow

 

Description

Equations

Variables

Connections

Parameters

Modelica Standard Library

Description

The Volume Flow component is a two-port thermal-fluid component that establishes a set volume flow. The temperature and enthalpy of the medium are not changed. When the use Vflow input boolean parameter is false, the volume flow is set by the component parameter FlowConst, otherwise the flow is set by a signal input.

The Medium parameter specifies the name of a Thermal-Fluid Media record, which must be in the model at the same or higer level.

The Use default medium boolean parameter, when true, sets the name of the Medium parameter to fluidMedium1, which corresponds to the default name of a fluid medium record. To use a different name, uncheck the box and enter the name in the parameter input that appears.

Equations

h=cpT

Qflow=0

Tq=T

Vflow={Vflowinputuse Vflow inputVflowconstotherwise

Variables

Name

Units

Description

Modelica ID

Δp

Pa

Pressure drop a->b

dp

Qflow

W

Heat exchange with ambient

Q_flow

T

K

Outlet temperature of medium

T

Ta

K

Temperature at flowPort_a

T_a

Tb

K

Temperature at flowPort_b

T_b

dT

K

Temperature increase of coolant in flow direction

dT

Vflow

m3s

Volume flow a->b

V_flow

Connections

Name

Description

Modelica ID

flowPorta

Thermal-Fluid FlowPort

flowPort_a

flowPortb

Thermal-Fluid FlowPort

flowPort_b

Vflowinput

Real input; volume flow in m3s

volumeFlow

Parameters

Name

Default

Units

Description

Modelica ID

medium

fluidMedium

 

Thermal-Fluid Media

medium

m

1

kg

Mass of medium

m

T0

293.15

K

Initial temperature of medium

T0

fix T_0

false

 

True (checked) means T0 is enforced, otherwise it is a guess

T0fixed

use Vflow input

false

 

True (checked) means use an input to set the volume flow

useVolumeFlowInput

Vflowconst

1

m3s

Volume flow rate

constantVolumeFlow

Modelica Standard Library

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

Thermal Overview

Thermal Sources