Results 31 to 40 of about 208,604 (196)
Mathematics, 2023 Since Sir Osborne Reynolds presented the Reynolds-averaged Navier–Stokes (RANS) equations in 1895, the construction of complete closure for RANS equations has been regarded as extremely challenging.
Sungmin Ryu
doaj +1 more source
A stability condition for turbulence model: From EMMS model to EMMS-based turbulence model
, 2013 The closure problem of turbulence is still a challenging issue in turbulence modeling. In this work, a stability condition is used to close turbulence.
Li, Jinghai +3 more
core +1 more source
Average Turbulence Dynamics from a One-Parameter Kinetic Theory
Atmosphere, 2023 We show theoretically that the mean turbulent dynamics can be described by a kinetic theory representation with a single free relaxation time that depends on space and time.
Hudong Chen +3 more
doaj +1 more source
Spherical model for turbulence [PDF]
Physical Review Letters, 1993 A new set of models for homogeneous, isotropic turbulence is considered in which the Navier-Stokes equations for incompressible fluid flow are generalized to a set of N coupled equations in N velocity fields. It is argued that in order to be useful these models must embody a new group of symmetries, and a general formalism is laid out for their ...
, Mou, , Weichman
openaire +2 more sources
Wind turbulence inputs for horizontal axis wind turbines [PDF]
, 1981 Wind turbine response characteristics in the presence of atmospheric turbulence was predicted using two major modeling steps. First, the important atmospheric sources for the force excitations felt by the wind turbine system were identified and ...
Holley, W. E. +2 more
core +1 more source
Collisional transport across the magnetic field in drift-fluid models [PDF]
, 2016 Drift ordered fluid models are widely applied in studies of low-frequency turbulence in the edge and scrape-off layer regions of magnetically confined plasmas.
A. H. Nielsen +5 more
core +2 more sources
Water Science and Engineering, 2012 This paper describes a numerical simulation in the Amazon water system, aiming to develop a quasi-three-dimensional numerical tool for refined modeling of turbulent flow and passive transport of mass in natural waters.
Li-ren Yu
doaj +1 more source
Modelling supernova-driven turbulence [PDF]
Geophysical & Astrophysical Fluid Dynamics, 2019 High Mach number shocks are ubiquitous in interstellar turbulence. The Pencil Code is particularly well suited to the study of magnetohydrodynamics in weakly compressible turbulence and the numerical investigation of dynamos because of its high-order advection and time evolution algorithms.
Gent, F. A. +5 more
openaire +5 more sources
CONFORMAL MODELS OF MAGNETOHYDRODYNAMIC TURBULENCE [PDF]
International Journal of Modern Physics A, 1996 Following the previous work of Ferretti and Yang on the role of magnetic fields in the theory of conformal turbulence, we show that nonunitary minimal model solutions to two-dimensional magnetohydrodynamics (MHD) obtained by dimensional reduction from three dimensions exist under different (and more restrictive) conditions.
Coceal, Omduth, Thomas, Steven
openaire +2 more sources
TURBULENCE MODELING FOR COMPUTATIONAL FLUID DYNAMICS, PART I: CONCEPTUAL OUTLOOK
Havacılık ve Uzay Teknolojileri Dergisi, 2004 The motivations like economics, and in house availability of powerful computers advocates the use of numerical methods as a complementary tool for experiments.
Murat Uygun +2 more
doaj