Results 61 to 70 of about 572 (155)
Spectral-element simulations of variable-density turbulent flow in a plane channel
EPJ Web of Conferences, 2017 We perform Large-eddy simulations (LES) of the turbulent flow in a channel with isothermal heated walls with the temperature ratio equal to 2. The variable properties of the fluid are accounted for by using the low Mach number approximation. The Reynolds
Ryzhenkov Vladimir +3 more
doaj +1 more source
Dissipation and Regularity in the Smagorinsky Model with Dynamic Boundaries
This article presents an innovative extension of the Smagorinsky model incorporating dynamic boundary conditions and advanced regularity methods. We formulate the modified Navier-Stokes equations with the Smagorinsky term to model dissipation in turbulence and prove theorems concerning the existence, uniqueness, and asymptotic behavior of solutions ...
Santos, Rômulo Damasclin Chaves dos +1 more
openaire +2 more sources
Journal of Advances in Modeling Earth SystemsTurbulent mixing in ocean boundary layers is often fully parameterized as a subgrid‐scale process in realistic ocean simulations. However, recent submesoscale modeling studies have advanced to a horizontal grid spacing of O(10 m) that is comparable to ...
Zihan Chen +3 more
doaj +1 more source
CFD Simulation of Particle-Laden Flow in a 3D Differentially Heated Cavity Using Coarse Large Eddy Simulation. [PDF]
Flow Turbul Combust, 2022 Sayed MA +4 more
europepmc +1 more source
Concerning the Ladyzhenskaya–Smagorinsky turbulence model of the Navier–Stokes equations
Comptes Rendus. Mathématique, 2007 In some recent papers (see below) we prove regularity results in L q ( Ω ) spaces for the second order ...
openaire +3 more sources
Reduced basis method for the Smagorinsky model
, 2017 We present a reduced basis Smagorinsky model. This model includes a non-linear eddy diffusion term that we have to treat in order to solve efficiently our reduced basis model. We approximate this non-linear term using the Empirical Interpolation Method, in order to obtain a linearised decomposition of the reduced basis Smagorinsky model.
Chacón Rebollo, Tomás +2 more
openaire +2 more sources
Journal of Applied Fluid Mechanics, 2019 Instantaneous radial and axial velocitieques of water in the tank with a self-aspirating disk impeller operating without gas dispersion were measured by the PIV method.
J. Stelmach +3 more
doaj
Oil & Gas Science and Technology, 2013 In this article, Large Eddy Simulations (LES) of Spark Ignition (SI) engines are performed to evaluate the impact of the numerical set-upon the predictedflow motion and combustion process.
Misdariis A. +4 more
doaj +1 more source
Large-Eddy Simulation of a Laminar Separation Bubble
Journal of Applied Fluid Mechanics, 2019 Large-eddy simulation of a laminar separation bubble on a flat plate has been performed and compared with the data in the literature. Suitability of different subgrid-scale models has been examined for simulation of transition.
N. K. Singh
doaj
Numerical and physical model study of a vertical slot fishway
Journal of Hydrology and Hydromechanics, 2014 This paper presents the results of an experimental and numerical study of a vertical slot fishway (VSF). A 2-D depth-averaged shallow water numerical model PCFLOW2D coupled with three different turbulent models (constant eddy viscosity, Smagorinsky and k
Bombač Martin +3 more
doaj +1 more source