modelMRate_3

Unrestricted multiplicative rate element with three influencing variables

Information

This is the general System Dynamics unrestricted multiplicative Rate element, whereby the rate itself is determined by three variables in its laundry list. The indicated direction of mass flow simply denotes the direction of positive mass flow. However if the control signal of the rate assumes a negative value, mass will flow in the opposite direction.

The model contains a dissipative loss of enthalpy (but not mass) to the environment. Mass is always conserved. By attaching an R element to a 1 junction, we guarantee that the mass flow is not affected at all by the dissipative term. Only enthalpy is being dissipated.

Parameters

TypeNameDefaultDescription
RealR00Specific enthalpy of dissipation

Connectors

TypeNameDefaultDescription
Modelica.Blocks.Interfaces.RealInputuFirst signal inflow variable
Modelica.Blocks.Interfaces.RealInputu1Second signal inflow variable
Modelica.Blocks.Interfaces.RealInputu2Third signal inflow variable
BondLib.Interfaces.BondConBondCon1Mass and power flow
BondLib.Interfaces.BondConBondCon2Mass and power flow

Components

TypeNameDefaultDescription
Realrate
Auxiliary.Prod_3Prod1
Bonds.eBondB1
Bonds.eBondB3
Bonds.fBondB2
BondLib.Sources.mSfmSfFlow source
Junctions.J1p4j1p4_1
Bonds.eBondB4
Passive.RR1