Results 21 to 30 of about 132 (125)

Numerical Investigations of Mixed Convection of Incompressible Viscous Fluid in LNG Storage with a Various Locations of Input and Output Mass

MATEC Web of Conferences, 2015
The article shows the results of mathematical simulation of mixed convection in the low-temperature storage of liquefied natural gas with a regenerative cooling. The regimes of mixed convection in a closed area with the different arrangement of the input
Sklyarenko Kristina A., Lutceva Ekaterina A., Maksimov Vyacheslav I., Nagornova Tatiana A.   +3 more
doaj   +1 more source

Numerical algorithms to solve one inverse problem for Navier–Stokes equations

Nonlinear Analysis
This model describes the Poiseuille type solution in the nonstationary case of the Navier–Stokes problem. An equivalent form of PDE problem is defined as the first-kind Volterra integral equation.
Raimondas Čiegis
doaj   +1 more source

Turbulent snow transport and accumulation: New reduced‐order models and diagnostics

Quarterly Journal of the Royal Meteorological Society, Volume 152, Issue 776, April 2026 Part A.
Our new reduced‐order models of snow particle transport provide high‐fidelity calculations of snow accumulation in turbulent flows at significantly reduced computational costs. Additional accumulation diagnostics from the reduced‐order model predict complex patterns of particle concentration in turbulent boundary layers via coherent flow structures in ...
Nikolas O. Aksamit, Alex P. Encinas‐Bartos, Holt Hancock, Alexander Prokop   +3 more
wiley   +1 more source

Global Solvability of the Generalized Navier−Stokes System in Critical Besov Spaces

Journal of Mathematics, Volume 2026, Issue 1, 2026.
This paper is devoted to the global solvability of the Navier−Stokes system with a fractional Laplacian (−Δ)α in Rn for n ≥ 2, where the convective term has the form (|u|m−1u)·∇u for m ≥ 1. By establishing the estimates for the difference u1m−1u1−u2m−1u2 in homogeneous Besov spaces and employing the maximal regularity property of (−Δ)α in Lorentz−Besov
Huiyang Zhang, Shiwei Cao, Qinghua Zhang, Dengfeng Lu   +3 more
wiley   +1 more source

Space‐Time Modeling and Numerical Simulations of Non‐Newtonian Fluids Using Internal Variables

International Journal for Numerical Methods in Fluids, Volume 97, Issue 12, Page 1457-1481, December 2025.
Based on Hamilton's principle, the study focuses on a novel strategy for the modeling of non‐Newtonian fluids with the help of internal variables. Here, the viscosity evolves locally in space and time. Three configurations are numerically implemented, namely channel flow, a benchmark, and a lid‐driven cavity.
Philipp Junker, Thomas Wick
wiley   +1 more source

Searching for Universality of Turbulence in the Earth's Magnetosphere

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Turbulence in space plasmas remains a fundamental challenge, and Earth's magnetosphere (MSP) offers a natural laboratory for its study. Using high‐resolution magnetic field data from the Magnetospheric Multiscale (MMS) mission, we extend a stochastic Markovian framework to analyze turbulence across 10 diverse magnetospheric regions, including ...
Dariusz Wójcik, Wiesław M. Macek
wiley   +1 more source

Spatially Periodic Solutions for Evolution Anisotropic Variable‐Coefficient Navier–Stokes Equations: II. Serrin‐Type Solutions

Mathematical Methods in the Applied Sciences, Volume 48, Issue 12, Page 11592-11619, August 2025.
ABSTRACT We consider evolution (nonstationary) space‐periodic solutions to the n$$ n $$‐dimensional nonlinear Navier–Stokes equations of anisotropic fluids with the viscosity coefficient tensor variable in space and time and satisfying the relaxed ellipticity condition.
Sergey E. Mikhailov
wiley   +1 more source

Derivation and Numerical Assessment of a Stochastic Large–Scale Hydrostatic Primitive Equations Model

Journal of Advances in Modeling Earth Systems, Volume 17, Issue 7, July 2025.
Abstract Planetary flows are shaped by interactions at scales much smaller than the flows themselves, with mesoscale and sub–mesoscale eddies playing key roles in mixing, particle transport and tracer dispersion. To capture these effects, we introduce a stochastic formulation of the primitive equations within the Location Uncertainty (LU) framework ...
Francesco L. Tucciarone, Long Li, Etienne Mémin, Pranav Chandramouli   +3 more
wiley   +1 more source

Aeroelastic force prediction via temporal fusion transformers

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 15, Page 2098-2129, 17 June 2025.
Abstract Aero‐structural shape design and optimization of bridge decks rely on accurately estimating their self‐excited aeroelastic forces within the design domain. The inherent nonlinear features of bluff body aerodynamics and the high cost of wind tunnel tests and computational fluid dynamics (CFD) simulations make their emulation as a function of ...
Miguel Cid Montoya, Ashutosh Mishra, Sumit Verma, Omar A. Mures, Carlos E. Rubio‐Medrano   +4 more
wiley   +1 more source

Elementary Mathematics Helps to Shed Light on the Transpiration Budget Under Water Stress

Ecohydrology, Volume 18, Issue 2, March 2025.
ABSTRACT This paper aims to present a methodology for accurately describing transpiration by employing appropriate physical equations. While some simplifications have been made, including the use of a simplified treatment of turbulence and the neglect of the thermal capacity of transpiring leaves, it is argued that the chosen scheme has general ...
Concetta D'Amato, Riccardo Rigon
wiley   +1 more source