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Qu'est-ce (qui) est K-epsilon turbulence model - définition
K-epsilon turbulence model
K-epsilon (k-ε) turbulence model is the most common model used in computational fluid dynamics (CFD) to simulate mean flow characteristics for turbulent flow conditions. It is a two equation model that gives a general description of turbulence by means of two transport equations (partial differential equations, PDEs).
K–omega turbulence model
In computational fluid dynamics, the k–omega (k–ω) turbulence model is a common two-equation turbulence model, that is used as an approximation for the Reynolds-averaged Navier–Stokes equations (RANS equations). The model attempts to predict turbulence by two partial differential equations for two variables, k and ω, with the first variable being the turbulence kinetic energy (k) while the second (ω) is the specific rate of dissipation (of the turbulence kinetic energy k into internal thermal energy).
Epsilon calculus
LOGICAL CALCULUS WITH A PRIMITIVE SYMBOL THAT DENOTES AN ARBITRARY VALUE SATISFYING A GIVEN PREDICATE OR, IF NO SUCH VALUE EXISTS, ANOTHER ARBITRARY VALUE
Epsilon operator; Epsilon substitution method; Epsilon terms
Hilbert's epsilon calculus is an extension of a formal language by the epsilon operator, where the epsilon operator substitutes for quantifiers in that language as a method leading to a proof of consistency for the extended formal language. The epsilon operator and epsilon substitution method are typically applied to a first-order predicate calculus, followed by a showing of consistency.
