modelPumpSimple

Parameters

TypeNameDefaultDescription
Realeta0.8
SI.Lengthdiameterdiameter_nominalImpeller diameter
SI.Densityd_startMedium.density_phX(p_b_start, h_start, Medium.X_default)
RealetaMech0.98Mechanical Efficiency
SI.TimeT_inertia5Equivalent hydraulic time constant
SI.VolumeFlowRateV_flow_nominal
SI.Accelerationg_nModelica.Constants.g_n
SI.PowerW_eps1e-8Small coefficient to avoid numerical singularities
SI.Conversions.NonSIunits.AngularVelocity_rpmN_eps1e-8Small coefficient to avoid numerical singularities
RealnParallel1Number of pumps in parallel
Booleanuse_N_inputfalseGet the rotational speed from the input connector
Modelica.SIunits.Conversions.NonSIunits.AngularVelocity_rpmN_constantN_nominalConstant rotational speed
Nominal Conditions for Affinity Laws: Single pump basis
SI.Lengthdiameter_nominal0.1Impeller diameter
SI.MassFlowRatem_flow_nominalMass flow rate
Geometry
SI.VolumeVPump internal volume
Initialization
SI.MassFlowRatem_flow_start1Mass flowrate start value (single pump)
SI.Pressurep_a_startInlet Pressure Start Value
SI.Pressurep_b_startOutlet Pressure Start Value
SI.SpecificEnthalpyh_start1e5Fluid Specific Enthalpy Start Value
Initialization › Start Value: Specific Enthalpy
SI.TemperatureT_startMedium.temperature_phX(p_a_start, h_start, Medium.X_default)Specific enthalpy
Initialization › Dynamics
DynamicsenergyDynamicsDynamics.DynamicFreeInitialFormulation of energy balances
DynamicsmassDynamicsenergyDynamicsFormulation of mass balances
Nominal operating point
SI.Densityd_nominal1000Nominal Liquid Density
SI.Conversions.NonSIunits.AngularVelocity_rpmN_nominal1500Nominal rotational speed
Advanced
BooleancheckValvetrueReverse flow stopped

Connectors

TypeNameDefaultDescription
Interfaces.FluidPort_Flowport_a
Interfaces.FluidPort_Flowport_b
Modelica.Blocks.Interfaces.RealInputN_inputPrescribed rotational speed

Components

TypeNameDefaultDescription
SI.Conversions.NonSIunits.AngularVelocity_rpmNShaft r.p.m.
SI.MassFlowRatem_flowMass flowrate (single pump)
SI.VolumeFlowRateV_flowVolume flow rate (single pump)
SI.PressureDifferencedpPump characteristic pressure difference
SI.HeightheadPump head
SI.PowerWPower Consumption (single pump)
SI.PowerW_totalPower Consumption
SI.PowerW_hydHydraulic power (single pump)
Medium.ThermodynamicStatestate_aMedium.setState_phX(port_a.p, inStream(port_a.h_outflow), inStream(port_a.Xi_outflow))
SI.DensitydLiquid density
SI.TemperatureTLiquid inlet temperature
SI.SpecificEnthalpyhFluid specific enthalpy

Contents

NameDescription
Medium