Reynolds-averaged Navier–Stokes turbulence modeling

E594627

computational fluid dynamics method turbulence modeling approach

Reynolds-averaged Navier–Stokes turbulence modeling is a widely used computational fluid dynamics approach that predicts turbulent flows by averaging the Navier–Stokes equations and modeling the effects of turbulence through closure models.

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Observed surface forms (2)

Surface form	Occurrences
Navier–Stokes turbulence	1
Reynolds-averaged Navier–Stokes equations	1

Statements (47)

Predicate	Object
instanceOf	computational fluid dynamics method ⓘ turbulence modeling approach ⓘ
abbreviation	RANS turbulence modeling ⓘ
advantage	lower computational cost than DNS ⓘ lower computational cost than LES ⓘ
aimsTo	predict turbulent flows ⓘ
applicableTo	steady turbulent flows ⓘ unsteady turbulent flows with time-averaging ⓘ
assumes	scale separation between mean flow and turbulence ⓘ
basedOn	Reynolds-averaged Navier–Stokes equations NERFINISHED ⓘ
commonlyUses	Reynolds stress models ⓘ Spalart–Allmaras turbulence model NERFINISHED ⓘ eddy viscosity models ⓘ k–ε turbulence model NERFINISHED ⓘ k–ω SST turbulence model ⓘ k–ω turbulence model NERFINISHED ⓘ two-equation turbulence models ⓘ
comparedWith	direct numerical simulation ⓘ large eddy simulation ⓘ
governedBy	Reynolds-averaged continuity equation ⓘ Reynolds-averaged momentum equations ⓘ
introduces	Reynolds stresses ⓘ
limitation	loss of detailed turbulent structure information ⓘ model-form uncertainty ⓘ sensitivity to turbulence model choice ⓘ
oftenImplementedIn	finite difference CFD solvers ⓘ finite element CFD solvers ⓘ finite volume CFD solvers ⓘ
originatesFrom	Reynolds decomposition of flow variables NERFINISHED ⓘ
requires	turbulence closure models ⓘ
requiresModelingOf	Reynolds stress tensor ⓘ
requiresSpecificationOf	boundary conditions for turbulence quantities ⓘ
typicallySolvesFor	mean pressure field ⓘ mean velocity field ⓘ turbulence dissipation rate ⓘ turbulence kinetic energy ⓘ
usedFor	engineering design optimization ⓘ performance prediction of fluid systems ⓘ
usedIn	aerodynamic design ⓘ aerospace engineering ⓘ automotive aerodynamics ⓘ environmental flows modeling ⓘ industrial flow simulations ⓘ marine hydrodynamics ⓘ turbomachinery analysis ⓘ
uses	ensemble-averaged Navier–Stokes equations ⓘ time-averaged Navier–Stokes equations ⓘ

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

William C. Reynolds → notableWork → Reynolds-averaged Navier–Stokes turbulence modeling ⓘ

Lagrangian-history closure approximation → relatesTo → Reynolds-averaged Navier–Stokes turbulence modeling ⓘ

this entity surface form: Reynolds-averaged Navier–Stokes equations

direct interaction approximation (DIA) → appliesTo → Reynolds-averaged Navier–Stokes turbulence modeling ⓘ

subject surface form: direct interaction approximation

this entity surface form: Navier–Stokes turbulence