...Álvaro Martínez-Sánchez; Adrián Lozano-Durán Purpose Traditional modeling techniques for forecasting turbulence often rely on correlation-based criteria, which may select variables that correlate with the target without truly driving its dynamics. This limits model interpretability, generalization...

... simulations, the flow dynamics around a high-lift wing-flap system at high Reynolds number (Re/c = 4.6 million) is studied. Adapted turbulence models based on the URANS approach are used to capture the flow separation and the subsequent development of coherent structures. The present study focuses on the use...

... on the experimental prototype using micro fibre composite actuators. Optimal frequency range has been used, associated with low amplitudes of deformation with the Arbitrary Lagrangian Eulerian methodology. This study used an adapted turbulence modelling with the organised eddy simulation (OES) as well as a hybrid...

...T.O.M. Forslund; I.A.S. Larsson; J.G.I. Hellström; T.S. Lundström Purpose The purpose of this paper is to present a fast and bare bones implementation of a numerical method for quickly simulating turbulent thermal flows on GPUs. The work also validates earlier research showing that the lattice...

...Vincent Gleize; Michel Costes; Ivan Mary Purpose The purpose of this paper is to study turbulent flow separation at the airfoil trailing edge. This work aims to improve the knowledge of stall phenomenon by creating a QDNS database for the NACA412 airfoil. Design/methodology/approach Quasi-DNS...

... of Institut de Mécanique des Fluides de Toulouse of a single wing are discussed with high-fidelity numerical results obtained by using the Navier–Stokes multi-block (NSMB) code with advanced turbulent modelling able to capture the predominant instabilities and coherent structure dynamics. An explanation...

... is considered in the modeling. Due to flow’s nature involving rotating, separation and recirculation, a realizable κ-ε turbulence model with standard wall function is selected to capture flow characteristics influenced by the rotor and near the wall region. Simulations are conducted for two free-stream...

...Cheng Zhong; Alexandra Komrakova Purpose This paper aims to demonstrate the capabilities of a diffuse interface free energy lattice Boltzmann method to perform direct numerical simulations of liquid–liquid dispersions in a well-controlled turbulent environment. The goal of this research study...

...Asghar Noormohammadi; Bing-Chen Wang Purpose This paper aims to study turbulent dispersion of a passive plume emitting from a single elevated line source of different elevations in a plane channel flow by using direct numerical simulation (DNS). Design/methodology/approach The investigation...

.... Circumferential periodic conditions were introduced to reduce the extent of the computational domain. The post-processing procedure enabled the segregation of unsteady deterministic features and turbulent scales. The simulations were experimentally validated using wake profiles and turbulent scales obtained from...

... the finite volume method based on the SIMPLE algorithm. The k-ω Shear Stress Transport was used to model turbulence. The thermal and dynamic results were presented in term of average Nusselt number and friction factor, respectively. The effect of the height (Hs=6, 10 and 13) and the position (X=0, 1/3, 1/2...

...Mohamed Hichem Gazzah; Hafedh Belmabrouk Purpose – The effects of a co-flow and inlet jet temperature on local entropy generation in turbulent round jets have been studied numerically. The second-order closure turbulence model has been used. The paper aims to discuss these issues. Design...

...X. Li; N. Massarotti; P. Nithiarasu; Ivan Langella; Carlo Scalo; Giuseppe De Felice; Carlo Meola Purpose The purpose of this paper is to discuss some fundamental aspects regarding the anomalies in the passive scalar field advected by forced homogenous and isotropic turbulence, by inspection...

... of attack (deg) δ=flap deflection angle (deg) δ_ij=Kronecker delta function k=Von Karman constant ε=dissipation rate of turbulent kinetic energy (m²/s^{2) μ=molecular viscosity coefficient (kg/ms}...

...Frode Nygård; Helge I. Andersson Purpose The purpose of this paper is to describe a pragmatic parallelization of a publicly available serial code aimed for direct numerical simulations of turbulent flow fields. The code solves the full Navier‐Stokes equations in a cylindrical coordinate system...

... measurements results. Findings The presented approach increases the system stability. The model can be used for simulation of system instabilities that involve not just the pump characteristics but those of the complete piping system. Modified turbulence model including compressibility effects lead...

...Anna‐Lena Ljung; T. Staffan Lundström; Kent Tano Purpose The purpose of this paper is to numerically model convective drying of a two‐dimensional iron ore pellet subjected to turbulent flow. Design/methodology/approach Simulations of the iron ore pellet drying process are carried out...

...S. Kubacki; E. Dick Purpose This paper aims to provide improvements to the newest version of the k‐ ω turbulence model of Wilcox for convective heat transfer prediction in turbulent axisymmetric jets impinging onto a flat plate. Design/methodology/approach Improvements to the heat transfer...

...Keivan Khademi Shamami; Madjid Birouk Purpose This paper aims to describe the numerical simulation of a three‐dimensional turbulent free jet issuing from a sharp‐edged equilateral triangular orifice into still air. Design/Methodology/approach The numerical simulation was carried out by solving...

...William D. York; D. Keith Walters; James H. Leylek Purpose The purpose of this paper is to present a new eddy‐viscosity formulation designed to exhibit a correct response to streamline curvature and flow rotation. The formulation is implemented into a linear k‐ ε turbulence model...