Results 1 to 10 of about 107,565 (223)

Industrial scale large eddy simulations (LES) with adaptive octree meshes using immersogeometric analysis [PDF]

Computers & Mathematics with Applications, 2020
We present a variant of the immersed boundary method integrated with octree meshes for highly efficient and accurate Large-Eddy Simulations (LES) of flows around complex geometries. We demonstrate the scalability of the proposed method up to $\mathcal{O}(
K. Saurabh, Boshun Gao, Milinda Fernando, Songzhe Xu, Biswajit Khara, Makrand A. Khanwale, M. Hsu, A. Krishnamurthy, H. Sundar, B. Ganapathysubramanian   +9 more
semanticscholar   +5 more sources

Large eddy simulations (LES) of inclined dense jets in coastal waters [PDF]

, 2016
Desalination plants are increasingly common to augment the freshwater supply to ease the pressure on the demand of freshwater due to the rapid global urbanization. In view of potential environmental impacts, the brine outfall of desalination plants must be properly designed to ensure good mixing with the surrounding ambient seawater.
Shuai Zhang
semanticscholar   +3 more sources

Physically Consistent Resolving Simulations of Turbulent Flows [PDF]

Entropy
Usually applied simulation methods for turbulent flows as large eddy simulation (LES), wall-modeled LES (WMLES), and detached eddy simulation (DES) face significant challenges: they are characterized by improper resolution variations and essential ...
Stefan Heinz
doaj   +2 more sources

Unveiling diurnal metamorphosis in the atmospheric boundary layer during an annular solar eclipse through large eddy simulations [PDF]

Scientific Reports
Solar eclipses induce abrupt reductions in solar radiation, triggering notable changes in the atmospheric boundary layer (ABL). This study employs large eddy simulations (LES) to investigate eclipse-induced ABL modulations over Thiruvananthapuram during ...
D. Bala Subrahamanyam
doaj   +2 more sources

Large Eddy Simulations in Astrophysics [PDF]

Living Reviews in Computational Astrophysics, 2014
In this review, the methodology of large eddy simulations (LES) is introduced and applications in astrophysics are discussed. As theoretical framework, the scale decomposition of the dynamical equations for neutral fluids by means of spatial filtering is
Wolfram Schmidt-Brückner
semanticscholar   +5 more sources

A Near-Wall Methodology for Large-Eddy Simulation Based on Dynamic Hybrid RANS-LES. [PDF]

Entropy (Basel)
Attempts to mitigate the computational cost of fully resolved large-eddy simulation (LES) in the near-wall region include both the hybrid Reynolds-averaged Navier–Stokes/LES (HRL) and wall-modeled LES (WMLES) approaches. This paper presents an LES wall treatment method that combines key attributes of the two, in which the boundary layer mesh is sized ...
Tullis M, Walters DK.
europepmc   +4 more sources

Coupled mesoscale–microscale modeling of air quality in a polluted city using WRF-LES-Chem [PDF]

Atmospheric Chemistry and Physics, 2023
To perform realistic high-resolution air quality modeling in a polluted urban area, the Weather Research and Forecasting (WRF) model is used with an embedded large-eddy simulation (LES) module and online chemistry.
Y. Wang, Y.-F. Ma, D. Muñoz-Esparza, J. Dai, C. W. Y. Li, P. Lichtig, R. C.-W. Tsang, C.-H. Liu, T. Wang, G. P. Brasseur, G. P. Brasseur, G. P. Brasseur   +11 more
doaj   +1 more source

Deep Reinforcement Learning for Turbulence Modeling in Large Eddy Simulations [PDF]

International Journal of Heat and Fluid Flow, 2022
Over the last years, supervised learning (SL) has established itself as the state-of-the-art for data-driven turbulence modeling. In the SL paradigm, models are trained based on a dataset, which is typically computed a priori from a high-fidelity ...
Marius Kurz, Philipp Offenhäuser, A. Beck   +2 more
semanticscholar   +1 more source

Large-eddy simulations with ClimateMachine v0.2.0: a new open-source code for atmospheric simulations on GPUs and CPUs [PDF]

Geoscientific Model Development, 2022
We introduce ClimateMachine, a new open-source atmosphere modeling framework which uses the Julia language and is designed to be scalable on central processing units (CPUs) and graphics processing units (GPUs). ClimateMachine uses a common framework both
A. Sridhar, Y. Tissaoui, S. Marras, Z. Shen, C. Kawczynski, S. Byrne, K. Pamnany, M. Waruszewski, T. H. Gibson, J. E. Kozdon, V. Churavy, L. C. Wilcox, F. X. Giraldo, T. Schneider, T. Schneider   +14 more
doaj   +1 more source

Subgrid Parameterization of Eddy, Meanfield and Topographic Interactions in Simulations of an Idealized Antarctic Circumpolar Current

Journal of Advances in Modeling Earth Systems, 2023
The ocean circulation dynamics can be represented as a high‐dimensional multi‐scale nonlinear system with inhomogenous meanfields and topography. Numerical simulations of the ocean dynamics resolve the large scales of motion on a computational grid, with
V. Kitsios, J. S. Frederiksen, T. J. O’Kane   +2 more
doaj   +1 more source