Results 51 to 60 of about 375 (167)

On the Application of the Dynamic Smagorinsky Model to Large-Eddy Simulations of the Cloud-Topped Atmospheric Boundary Layer

Journal of the Atmospheric Sciences, 2006
Abstract In this paper the dynamic Smagorinsky model originally developed for engineering flows is adapted for simulations of the cloud-topped atmospheric boundary layer in which an anelastic form of the governing equations is used.
M. P. Kirkpatrick, A. S. Ackerman, D. E. Stevens, N. N. Mansour   +3 more
openaire   +1 more source

Investigation of nonlocal data-driven methods for subgrid-scale stress modeling in large eddy simulation

AIP Advances, 2022
A nonlocal subgrid-scale stress (SGS) model is developed based on the convolution neural network (CNN), which is a powerful supervised data-driven method and also an ideal approach to naturally consider spatial information due to its wide receptive field.
Bo Liu, Huiyang Yu, Haibo Huang, Nansheng Liu, Xiyun Lu   +4 more
doaj   +1 more source

Thermo‐Hydrodynamic Processes of Microparticles in Fractures: A CFD–DEM Approach

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 10, Page 4230-4246, July 2026.
ABSTRACT Controlling fracture permeability plays a critical role in subsurface energy applications, particularly in geothermal energy production and enhanced carbon sequestration, where regulating fluid flow is essential. The use of microcapsules has become a promising solution to enhance fracture permeability by providing a controlled sealing ...
Hoai Thanh Nguyen, Pania Newell
wiley   +1 more source

Mathematical Analysis of the Adaptive Smagorinsky Model: Well-Posedness and Dynamical Complexity in Turbulent Flows

The Journal of Engineering and Exact Sciences
This study provides a rigorous mathematical analysis of the Adaptive Smagorinsky Model in large eddy simulation (LES) of turbulent flows, directly addressing the critical shortcomings of the classical constant-coefficient formulation. By incorporating a spatially dependent dissipation coefficient, the model alleviates excessive near-wall dissipation ...
Rômulo Damasclin Chaves dos Santos, Jorge Henrique de Oliveira Sales, Gislan Silveira Santos, Cássio Almeida Lima   +3 more
openaire   +2 more sources

A Longitudinal Case Study of a Transnational Teacher's Multiliterate Identity and Pedagogy

Reading Research Quarterly, Volume 61, Issue 3, July/August/September 2026.
This study focuses on a teacher's conceptualization of literacy and her literacy pedagogy across her first 4 years living in the United States, as she matriculated into a teacher education program and became a teacher in U.S. schools. Data included a digital story she composed as a preservice teacher, additional coursework artifacts, and interviews ...
Grace MyHyun Kim
wiley   +1 more source

Boundary Conditions and SGS Models for LES of Wall-Bounded Separated Flows: An Application to Engine-Like Geometries

Oil & Gas Science and Technology, 2013
The implementation and the combination of advanced boundary conditions and subgrid scale models for Large Eddy Simulations are presented. The goal is to perform reliable cold flow LES simulations in complex geometries, such as in the ...
Piscaglia F., Montorfano A., Onorati A., Brusiani F.   +3 more
doaj   +1 more source

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

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  

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

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