Results 81 to 90 of about 591 (174)

The ICON‐ParFlow Coupling: Integrating a Continental‐Scale Hydrological Model Into a Global Atmospheric Model

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.
Abstract In Earth system models, three‐dimensional prognostic subsurface hydrodynamics, including groundwater flow, are currently missing at the global scale. In order to prepare Earth system models for kilometer‐scale simulations with integrated continental hydrology, the ParFlow hydrological model has been coupled to the land model of the ICON ...
Jan Weinkaemmerer, Reiner Schnur, Klaus Goergen, Moritz Hanke, Stefan Kollet   +4 more
wiley   +1 more source

Analysis of Particle Pollutant Dispersion and Flow Field in a Naturally Cross-Ventilated Model Building [PDF]

مهندسی و مدیریت ساخت
This study, firstly, gives a summary about natural ventilation and particle dispersion, and, then, presents the research reported so far in these areas. As well as these, the research methodology, the sub-grid scale model equations used in the simulation,
Amir Hakamian
doaj  

A scale invariance criterion for LES parametrizations

Meteorologische Zeitschrift, 2015
Turbulent kinetic energy cascades in fluid dynamical systems are usually characterized by scale invariance. However, representations of subgrid scales in large eddy simulations do not necessarily fulfill this constraint. So far, scale invariance has been
Urs Schaefer-Rolffs, Rahel Knöpfel, Erich Becker   +2 more
doaj   +1 more source

Theoretical advances in the smagorinsky model for turbulence simulations

OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA
This article proposes significant theoretical enhancements to the Smagorinsky model for turbulence simulations, presenting new theorems with complete mathematical proofs to increase the precision and efficiency of these simulations. Acknowledging the limitations of the original model, this work addresses these challenges through a rigorous analysis in ...
Rômulo Damasclin Chaves dos Santos, Jorge Henrique de Oliveira Sales, Gislan Silveira Santos, Erickson Fabiano Moura Sousa Silva   +3 more
openaire   +1 more source

Enstrophy Cascade and Smagorinsky Model of 2D Turbulent Flows [PDF]

Journal of Mechanics, 2001
ABSTRACTDirect numerical simulations of 2D turbulent flows, freely decaying as well as forced, are performed to examine the mechanism of the enstrophy cascade and serve as a template of developing LES models. The stretching effect on the 2D vorticity gradients is emphasized on the analogy of the stretching effect on 3D vorticity.
openaire   +1 more source

Improved Simulations of the Quasi‐Biennial Oscillation in the Lower Stratosphere of an Earth System Model

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.
Abstract Numerical experimentation using an atmospheric configuration of the Goddard Earth Observing System (GEOS) Earth System Model is used to examine the vertical structure of the simulated Quasi‐Biennial Oscillation (QBO). Using an improved representation of the parameterized gravity wave spectrum, it is demonstrated that with sufficient vertical ...
William M. Putman, Laura A. Holt, M. Joan Alexander, Lawrence Coy, Steven Pawson   +4 more
wiley   +1 more source

On the aeroacoustic properties of a beveled plate

E3S Web of Conferences, 2015
The flow around a beveled flat plate model with an asymmetric 25 degrees trailing edge with three rounding radii is analyzed using a Navier-Stokes based open source software package OpenFOAM in order to predict the aeroacoustic properties of the models ...
van der Velden W.C.P., van Zuijlen A.H., de Jong A.T., Bijl H.   +3 more
doaj   +1 more source

General order virtual element approximation for the Smagorinsky turbulence model

Mathematics and Computers in Simulation
In this paper, we investigate a Smagorinsky model in a virtual element framework to simulate convection-dominated Navier-Stokes equations. We conduct a two-dimensional numerical investigation to assess the performance of the general order virtual element approximation in this context.
Stefano Berrone, Karol L. Cascavita, Enrique Delgado Ávila, Samuele Rubino, Maria Strazzullo, Fabio Vicini   +5 more
openaire   +2 more sources

Modelagem numérica em alta resolução para previsão de geração de energia eólica no Ceará High resolution atmospheric modeling to forecast wind energy generation in Ceará

Revista Brasileira de Meteorologia, 2008
Neste trabalho, foi utilizado um modelo de atmosfera de mesoescala para previsão de ventos em curto prazo para aplicações em geração de energia eólica.
Paulo Henrique Santiago de Maria, Alexandre Araújo Costa, Sérgio Sousa Sombra   +2 more
doaj   +1 more source

Model turbulent floods with the Smagorinski large eddy closure

, 2008
Floods, tides and tsunamis are turbulent, yet conventional models are based upon depth averaging inviscid irrotational flow equations. We propose to change the base of such modelling to the Smagorinksi large eddy closure for turbulence in order to appropriately match the underlying fluid dynamics. Our approach allows for large changes in fluid depth to
Roberts, A. J., Georgiev, D. J., Strunin, D. V.   +2 more
openaire   +2 more sources