Results 21 to 30 of about 471 (203)

Downscaling, parameterization, decomposition, compression: a perspective from the multiresolution analysis [PDF]

open access: yesAdvances in Geosciences, 2010
Geophysical models in general, and atmospheric models more specifically, are always limited in spatial resolutions. Due to this limitation, we face with two different needs.
J.-I. Yano
doaj   +1 more source

Mathematical Methodology and Metallurgical Application of Turbulence Modelling: A Review

open access: yesMetals, 2021
This paper focusses on three main numerical methods, i.e., the Reynolds-Averaged Navier-Stokes (RANS), Large Eddy Simulation (LES), and Direct Numerical Simulation (DNS) methods. The formulation and variation of different RANS methods are evaluated.
Yannan Wang   +4 more
doaj   +1 more source

Multi-scale snowdrift-permitting modelling of mountain snowpack [PDF]

open access: yesThe Cryosphere, 2021
The interaction of mountain terrain with meteorological processes causes substantial temporal and spatial variability in snow accumulation and ablation.
V. Vionnet   +8 more
doaj   +1 more source

Error induced by neglecting subgrid chemical segregation due to inefficient turbulent mixing in regional chemical-transport models in urban environments [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
We employed direct numerical simulations to estimate the error on chemical calculation in simulations with regional chemical-transport models induced by neglecting subgrid chemical segregation due to inefficient turbulent mixing in an urban boundary ...
C. W. Y. Li   +4 more
doaj   +1 more source

Model development in practice: a comprehensive update to the boundary layer schemes in HARMONIE-AROME cycle 40 [PDF]

open access: yesGeoscientific Model Development, 2022
The parameterised description of subgrid-scale processes in the clear and cloudy boundary layer has a strong impact on the performance skill in any numerical weather prediction (NWP) or climate model and is still a prime source of uncertainty.
W. C. de Rooy   +10 more
doaj   +1 more source

Çinlar subgrid scale model for large eddy simulation [PDF]

open access: yesApplied Mathematics and Computation, 2018
We construct a new subgrid scale (SGS) stress model for representing the small scale effects in large eddy simulation (LES) of incompressible flows. We use the covariance tensor for representing the Reynolds stress and include Clark's model for the cross stress.
Rukiye Kara, Mine Çaglar
openaire   +4 more sources

How well does a convection-permitting regional climate model represent the reverse orographic effect of extreme hourly precipitation? [PDF]

open access: yesHydrology and Earth System Sciences, 2023
Estimating future short-duration extreme precipitation in mountainous regions is fundamental for risk management. High-resolution convection-permitting models (CPMs) represent the state of the art for these projections, as they resolve convective ...
E. Dallan   +7 more
doaj   +1 more source

Adaptive Wavelet Methods for Earth Systems Modelling

open access: yesFluids, 2021
This paper reviews how dynamically adaptive wavelet methods can be designed to simulate atmosphere and ocean dynamics in both flat and spherical geometries.
Nicholas K.-R. Kevlahan
doaj   +1 more source

A method for parameterising roughness and topographic sub-grid scale effects in hydraulic modelling from LiDAR data [PDF]

open access: yesHydrology and Earth System Sciences, 2010
High resolution airborne laser data provide new ways to explore the role of topographic complexity in hydraulic modelling parameterisation, taking into account the scale-dependency between roughness and topography.
A. Casas, S. N. Lane, D. Yu, G. Benito
doaj   +1 more source

Analysis of subgrid scale models

open access: yesComputers & Mathematics with Applications, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
ABBA', ANTONELLA   +2 more
openaire   +2 more sources

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