Volume Flow
Enforce constant volume flow
Description
Equations
Variables
Connections
Parameters
Modelica Standard Library
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.
h=cp⁢T
Qflow=0
Tq=T
Vflow={Vflowinputuse Vflow inputVflowconstotherwise
Name
Units
Modelica ID
Δp
Pa
Pressure drop a->b
dp
Qflow
W
Heat exchange with ambient
Q_flow
T
K
Outlet temperature of medium
Ta
Temperature at flowPort_a
T_a
Tb
Temperature at flowPort_b
T_b
dT
Temperature increase of coolant in flow direction
Vflow
m3s
Volume flow a->b
V_flow
flowPorta
Thermal-Fluid FlowPort
flowPort_a
flowPortb
flowPort_b
Vflowinput
Real input; volume flow in m3s
volumeFlow
Default
medium
fluidMedium
Thermal-Fluid Media
m
1
kg
Mass of medium
T0
293.15
Initial temperature of medium
fix T_0
false
True (checked) means T0 is enforced, otherwise it is a guess
T0fixed
use Vflow input
True (checked) means use an input to set the volume flow
useVolumeFlowInput
Vflowconst
Volume flow rate
constantVolumeFlow
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
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