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  2. K-epsilon turbulence model - Wikipedia

    en.wikipedia.org/wiki/K-epsilon_turbulence_model

    The exact k-ε equations contain many unknown and unmeasurable terms. For a much more practical approach, the standard k-ε turbulence model (Launder and Spalding, 1974 [3]) is used which is based on our best understanding of the relevant processes, thus minimizing unknowns and presenting a set of equations which can be applied to a large number of turbulent applications.

  3. Turbulence modeling - Wikipedia

    en.wikipedia.org/wiki/Turbulence_modeling

    The Reynolds stress equation model (RSM), also referred to as second moment closure model, [12] is the most complete classical turbulence modelling approach. Popular eddy-viscosity based models like the k–ε (k–epsilon) model and the k–ω (k–omega) models have significant shortcomings in complex engineering flows. This arises due to the ...

  4. Turbulence kinetic energy - Wikipedia

    en.wikipedia.org/wiki/Turbulence_kinetic_energy

    Here l is the turbulence or eddy length scale, given below, and c μ is a k – ε model parameter whose value is typically given as 0.09; =. The turbulent length scale can be estimated as =, with L a characteristic length. For internal flows this may take the value of the inlet duct (or pipe) width (or diameter) or the hydraulic diameter.

  5. Kameleon FireEx KFX - Wikipedia

    en.wikipedia.org/wiki/Kameleon_FireEx_KFX

    Kameleon FireEx KFX, often only referred to as KFX, is a commercial Computational Fluid Dynamics (CFD) program with main focus on gas dispersion and fire simulation.. KFX uses the k-epsilon model for turbulence modelling, the Eddy Dissipation Concept (EDC) for combustion modelling, and a radiation model based on the Discrete Transfer Method (DTM) by Lockwood and Shah.

  6. Menter's Shear Stress Transport - Wikipedia

    en.wikipedia.org/wiki/Menter's_Shear_Stress...

    Menter's Shear Stress Transport turbulence model, or SST, is a widely used and robust two-equation eddy-viscosity turbulence model used in Computational Fluid Dynamics.The model combines the k-omega turbulence model and K-epsilon turbulence model such that the k-omega is used in the inner region of the boundary layer and switches to the k-epsilon in the free shear flow.

  7. Category:Turbulence models - Wikipedia

    en.wikipedia.org/wiki/Category:Turbulence_models

    Turbulence models use different methods to model fluctuations inherent in the full Navier-Stokes equations. They are used because the use of the full Navier-Stokes equations is normally computationally impractical.