Results 21 to 30 of about 377,594 (201)
Shear-Improved Smagorinsky Model for Large-Eddy Simulation of Wall-Bounded Turbulent Flows [PDF]
, 2006 A shear-improved Smagorinsky model is introduced based on recent results concerning shear effects in wall-bounded turbulence by Toschi et al. (2000).
Bertoglio, J. -P. +3 more
core +5 more sources
CFD-driven symbolic identification of algebraic Reynolds-stress models [PDF]
Journal of Computational Physics, 2022 A CFD-driven deterministic symbolic identification algorithm for learning explicit algebraic Reynolds-stress models (EARSM) from high-fidelity data is developed building on the frozen-training SpaRTA algorithm of [1]. Corrections for the Reynolds stress tensor and the production of transported turbulent quantities of a baseline linear eddy viscosity ...
Ben Hassan Saïdi, Ismaïl +3 more
openaire +5 more sources
Assessment of three turbulence model performances in predicting water jet flow plunging into a liquid pool [PDF]
Nuclear Technology and Radiation Protection, 2010 The main purpose of the current study is to numerically investigate, through computational fluid dynamics modeling, a water jet injected vertically downward through a straight circular pipe into a water bath.
Zidouni Kendil Faiza +2 more
doaj +1 more source
Theoretical and Applied Mechanics Letters, 2023 A mapping function between the Reynolds-averaged Navier-Stokes mean flow variables and transition intermittency factor is constructed by fully connected artificial neural network (ANN), which replaces the governing equation of the intermittency factor in
Lei Wu, Bing Cui, Zuoli Xiao
doaj +1 more source
An improved turbulence model for separation flow in a centrifugal pump
Advances in Mechanical Engineering, 2016 For the stable and reliable operation of centrifugal pump, the transient flow must be studied and the separation region should be avoided. Three-dimensional, incompressible, steady, and transient flows in a centrifugal pump at specific speed within 74 ...
Yun Ren +4 more
doaj +1 more source
Advances in Mechanical Engineering, 2019 Numerical simulations are important in bearing designs and should be in accordance with real working conditions. Two details are analyzed for the numerical simulations with a three-dimensional model of a large tilting-pad journal bearing included.
Aoshuang Ding +3 more
doaj +1 more source
Anisotropic Organised Eddy Simulation for the prediction of non-equilibrium turbulent flows around bodies [PDF]
, 2008 The unsteady turbulent flow around bodies at high Reynolds number is predicted by an anisotropic eddy-viscosity model in the context of the Organised Eddy Simulation (OES).
Bourguet, Rémi +3 more
core +2 more sources
Hydraulic study of two phase flow on low-gradient stepped spillways [PDF]
مهندسی منابع آب, 2016 Recently, low gradient stepped spillways, which can be constructed on the embankment dams, have been getting high attention owing to their easy implementation.
Ali Akbar Hekmatzadeh +2 more
doaj
Computation, 2018 A model for the simulation of wind flow in complex terrain is presented based on the Reynolds averaged Navier–Stokes (RANS) equations. For the description of turbulence, the standard k-ε, the renormalization group (RNG) k-ε, and a ...
Hermann Knaus +3 more
doaj +1 more source
Energies, 2023 In the article, a differential Reynolds stress model is recalibrated using turbulent channel flow direct numerical simulation data in the range of friction Reynolds numbers 550–5200.
Lev Usov +3 more
doaj +1 more source