WVSpectralVanishingViscosity

Small-scale damping

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Declaration

WVNonlinearFlux < WVForcingFluxOperation

Overview

The damping is a simple Laplacian, but with a spectral vanishing viscosity (SVV) operator applied that prevents any damping below a cutoff wavenumber. The SVV operator adjusts the wavenumbers being damped depending on whether anti-aliasing is applied.

Topics

• Other
  • WVSpectralVanishingViscosity initialize the WVNonlinearFlux nonlinear flux
  • buildDampingOperator
  • classRequiredPropertyNames
  • damp
  • dampingTimeScale
  • k_damp wavenumber at which the significant scale damping starts.
  • k_no_damp wavenumber below which there is zero damping
  • nu_xy
  • nu_z
  • spectralVanishingViscosityFilter
  • uv_damp

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