modelQuadraticCurve
Quadratic power characteristic curve, including linear extrapolation
Extends from TRANSFORM.Fluid.Pipes_Obsolete.ClosureModels.PumpCharacteristics.Models.Power.PartialPowerChar (Base class for pump power characteristics.).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| SI.VolumeFlowRate | V_flow_nominal (from PartialPowerChar) | m_flow_nominal/rho_nominal | Volumetri flow rate |
| SI.Power | W_nominal (from PartialPowerChar) | V_flow_nominal*dp_nominal | Power consumption |
| Boolean | isPump (from PartialPowerChar) | true | =true then affinity laws for pump else fan |
| SI.MassFlowRate | m_flow_start (from PartialPowerChar) | ||
| SI.Pressure | p_a_start (from PartialPowerChar) | ||
| SI.Pressure | p_b_start (from PartialPowerChar) | ||
| SI.SpecificEnthalpy | h_start (from PartialPowerChar) | ||
| SI.PressureDifference | dp_start (from PartialPowerChar) | p_b_start - p_a_start | |
| SI.Density | rho_start (from PartialPowerChar) | Medium.density_ph(p_b_start, h_start) | |
| SI.VolumeFlowRate | V_flow_start (from PartialPowerChar) | m_flow_start/rho_start | |
| SI.VolumeFlowRate | V_flow_curve | {0, V_flow_nominal, 1.5*V_flow_nominal} | Volume flow rate for three operating points (single pump) |
| SI.Power | W_curve | {0, W_nominal, 2*W_nominal} | Pump head for three operating points |
| Internal Interface › Nominal Operating Parameters: | |||
| SI.MassFlowRate | m_flow_nominal (from PartialPowerChar) | Mass flow rate | |
| SI.Density | rho_nominal (from PartialPowerChar) | Density | |
| SI.Conversions.NonSIunits.AngularVelocity_rpm | N_nominal (from PartialPowerChar) | Pump speed | |
| SI.Length | diameter_nominal (from PartialPowerChar) | Impeller Diameter | |
| SI.PressureDifference | dp_nominal (from PartialPowerChar) | Nominal pressure gain | |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Medium.ThermodynamicState | state (from PartialPowerChar) | Thermodynamic state | |
| SI.MassFlowRate | m_flow (from PartialPowerChar) | Mass flow rate | |
| SI.Conversions.NonSIunits.AngularVelocity_rpm | N (from PartialPowerChar) | Pump speed | |
| SI.Length | diameter (from PartialPowerChar) | Impeller Diameter | |
| SI.Density | rho (from PartialPowerChar) | Medium.density(state) | Density |
| SI.VolumeFlowRate | V_flow (from PartialPowerChar) | m_flow/rho | Volumetric flow rate |
| Units.NonDim | affinityLaw (from PartialPowerChar) | Affinity law for scaling | |
| SI.Power | W (from PartialPowerChar) | Power consumption |