Results 91 to 100 of about 33,912 (215)

The Polymer Effect on Nonlinear Processes in Decaying Homogeneous Isotropic Turbulence

Advances in Mechanical Engineering, 2013
In order to study the polymer effect on the behavior of nonlinearities in decaying homogeneous isotropic turbulence (DHIT), direct numerical simulations were carried out for DHIT with and without polymers.
Wei-Hua Cai, Feng-Chen Li, Hong-Na Zhang, Yue Wang, Lu Wang   +4 more
doaj   +1 more source

Power laws and inverse motion modelling: application to turbulence measurements from satellite images

Tellus: Series A, Dynamic Meteorology and Oceanography, 2012
In the context of tackling the ill-posed inverse problem of motion estimation from image sequences, we propose to introduce prior knowledge on flow regularity given by turbulence statistical models.
Pablo D. Mininni, Dominique Heitz, Etienne Mémin, Patrick Héas   +3 more
doaj   +1 more source

Effect of thermal fluctuations on homogeneous compressible turbulence

Advances in Aerodynamics, 2023
For more than a century, it has been widely believed that there is a clear gap between molecular motions at the microscopic level and turbulent fluctuations at the macroscopic level. However, recent studies have demonstrated that the thermal fluctuations
Qihan Ma, Chunxin Yang, Song Chen, Kaikai Feng, Jun Zhang   +4 more
doaj   +1 more source

Active Scalar mixing by homogeneous isotropic turbulence

Physica D: Nonlinear Phenomena
We study the mixing of active scalars by homogeneous isotropic incompressible stochastic velocity fields. We consider both Navier-Stokes generated turbulent fields as well as artificially generated homogeneous isotropic stochastic fields. We use Fourier pseudospectral direct numerical simulations to study the mixing dynamics of two non-reacting species
Jossy, Joaquim P., Awasthi, Pratyush S., Gupta, Prateek   +2 more
openaire   +2 more sources

Incorporating Particle Settling Enhancement in a Coarse‐Mode Deposition Model

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Dry deposition rates are usually assumed to rely primarily on gravitational settling, with some enhancement due to interactions with surface elements. However, it is known through experiment, theory, and simulation that vertical velocities of particles in turbulent flows can be enhanced by hydrodynamic effects (often referred to as ...
Andrew P. Grace, David Richter
wiley   +1 more source

Scour‐Conditioned Seismic Fragility Analysis of Monopile‐Supported Offshore Wind Turbines

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 4, Page 947-967, 10 April 2026.
ABSTRACT Monopile‐supported offshore wind turbines (MS‐OWTs) are increasingly deployed in seismic coastal regions, where they face compound risks from earthquake loading and seabed scour. While past studies have addressed these hazards separately, seismic fragility under evolving scour conditions remains insufficiently understood. This study introduces
Francisco Pinto, Rodrigo Astroza, Felipe Vicencio, Raffaele De Risi   +3 more
wiley   +1 more source

C. F. v. Weizsächer on Quasistationary Isotropic Turbulence Compared With Onsager's Statistical Hydrodynamics

Natural Sciences, Volume 6, Issue 2, April 2026.
v. Weizsäcker and Heisenberg began their turbulence collaboration in 1945 while still quarantined at Farm Hall. Their papers were submitted separately in 1946 from Göttingen. v. Weizsäcker had derived the 5/3 law for dissipation while using dimensional analysis in real space.
Joseph L. McCauley
wiley   +1 more source

Relating statistics to dynamics in axisymmetric homogeneous turbulence

, 2012
The structure and the dynamics of homogeneous turbulence are modified by the presence of body forces such that the Coriolis or the buoyancy forces, which may render a wide range of turbulence scales anisotropic.
Antonia, Antonia, Batchelor, Batchelor, Bellet, Benney, Biferale, Bos, Cambon, Chandrasekhar, Fabien S. Godeferd, Frisch, Galtier, Galtier, Galtier, Godeferd, Kolmogorov, Kurien, Lamriben, Lindborg, Lindborg, Lindborg, Mininni, Monin, Morinishi, Morize, Orszag, Oyewola, Ozmidov, Praud, Sagaut, Seiwert, Staplehurst, Xu, Yoon, Yoshimatsu, Zakharov   +36 more
core   +3 more sources

Correlation between large- and small-scale velocity components under Fourier filters

Theoretical and Applied Mechanics Letters, 2014
By introducing the Fourier filters, we analyse the correlation between large- and small-scale velocity components in homogeneous isotropic turbulence theoretically. We show that different Fourier filters act similarly on this multi-scale correlation with
Le Fang
doaj   +1 more source

Evaluation of the Haemodynamic Behaviour of Stenosed Aortic Heart Valves Using Fluid Structure Interaction Modelling

International Journal for Numerical Methods in Biomedical Engineering, Volume 42, Issue 3, March 2026.
The haemodynamic environment of generic calcific and rheumatic aortic valves of various severities is analysed through the use of 3D FSI modelling techniques. For the same severity and similar flow rates, the rheumatic valves offer higher resistance to the flow of blood compared to the calcific valves.
Lindi Grobler Kock, Ryno Laubscher, Johan van der Merwe, Martin P. Venter, Anton F. Doubell, Philip G. Herbst   +5 more
wiley   +1 more source