Table of Contents

MomentumTheoryCorrections

https://bladednextgen.dnv.com/schema/0.4.1/Settings/AerodynamicSettings/AerodynamicModel/MomentumTheoryCorrections/MomentumTheoryCorrections.json

The Blade Element Momentum (BEM) theory model.

  • GlauertCorrectionMethodForHighInduction: string = BLADED | NONE
  • GlauertSkewedWakeCorrectionModel: object (GlauertSkewWakeModel)
  • InductionFactorsTolerance: number
  • NoInflowBelowTipSpeedRatio: number
  • FullInflowAboveTipSpeedRatio: number
  • DynamicWake: object (a type of DynamicWake)
  • IncludeStructuralVelocityInInductionCalculation: boolean

Properties

GlauertCorrectionMethodForHighInduction: string, optional

The Glauert correction method for when the rotor has high induction.

default = BLADED

GlauertSkewedWakeCorrectionModel: object(GlauertSkewWakeModel), optional

Settings for the Glauert skew wake model.

InductionFactorsTolerance: number, optional

In the steady state (e.g. finding initial conditions) and/or when using equilibrium wake in the dynamic state, the axial and tangential factors are found by iteration. The precision to which these induction factors are found is determined by this tolerance.

default = 0.0001

NoInflowBelowTipSpeedRatio: number, optional

The tip speed ratio below which the inflow calculations will be switched off. Default = 1

default = 1.0

FullInflowAboveTipSpeedRatio: number, optional

The tip speed ratio above which the inflow calculations will be switched on. Default = 2

default = 2.0

DynamicWake: object (a type of DynamicWake), optional

The model used for the dynamic wake.

Can be any of the following types:

IncludeStructuralVelocityInInductionCalculation: boolean, optional

If true, the axial structural velocity will be included in the induction calculations. Enabled by default.

default = True