0-Eq. Models

Zero-equation or algebraic turbulence models. More...

Description

A single-phase, isothermal Reynolds-Averaged Navier-Stokes 0-Eq. model.

Single-phase Reynolds-Averaged Navier-Stokes flow.

A single-phase, isothermal Reynolds-Averaged Navier-Stokes model.

This model implements a single-phase, isothermal Reynolds-Averaged Navier-Stokes model, solving the momentum balance equation

$$\frac{\partial (\varrho \mathbf{\text{v}})}{\partial t}+\mathrm{\nabla }\cdot (\varrho \mathbf{\text{v}}{\mathbf{\text{v}}}^{\text{T}})=\mathrm{\nabla }\cdot ({\mu }_{\text{eff}}(\mathrm{\nabla }\mathbf{\text{v}}+\mathrm{\nabla }{\mathbf{\text{v}}}^{\text{T}}))-\mathrm{\nabla }p+\varrho \mathbf{\text{g}}-\mathbf{\text{f}}$$

The effective viscosity is composed of the fluid and the eddy viscosity:

$${\mu }_{\text{eff}}=\mu +{\mu }_{\text{t}}$$

.

These models calculate the eddy viscosity without solving additional PDEs, only based on the wall distance and the velocity gradient.

The following models are available:

1. Prandtl's mixing length, e.g. [65]
2. Van-Driest modification, [89] and [38]
3. Baldwin-Lomax, [10]

Files
file	zeroeqncmodel.hh
	A single-phase, multi-component Reynolds-Averaged Navier-Stokes 0-Eq. model.
file	freeflow/rans/zeroeq/model.hh
	A single-phase, isothermal Reynolds-Averaged Navier-Stokes 0-Eq. model.
file	freeflow/rans/zeroeq/problem.hh
	Zero-equation turbulence problem base class.
file	freeflow/rans/zeroeq/volumevariables.hh

Classes
struct	Dumux::Properties::ZeroEqNCModelTraits< dimension, nComp, useM, replaceCompEqIdx >
	Traits for the Reynolds-averaged Navier-Stokes 0-Eq. model. More...
struct	Dumux::Properties::ZeroEqModelTraits< dimension >
	Traits for the ZeroEq model. More...
class	Dumux::RANSProblemImpl< TypeTag, TurbulenceModel::zeroeq >
	Zero-equation turbulence problem base class. More...
class	Dumux::ZeroEqVolumeVariables< Traits, NSVolumeVariables >
	Volume variables for the single-phase 0-Eq. model. More...