Results 31 to 40 of about 359,044 (195)

Turbulence Model Selection for Low Reynolds Number Flows. [PDF]

open access: yesPLoS ONE, 2016
One of the major flow phenomena associated with low Reynolds number flow is the formation of separation bubbles on an airfoil's surface. NACA4415 airfoil is commonly used in wind turbines and UAV applications.
S M A Aftab   +3 more
doaj   +1 more source

Simulation of Accelerated Subcritical Flow Profiles in an Open Channel with Emergent Rigid Vegetation

open access: yesApplied Sciences, 2022
Even though both fluid mechanics and numerical studies have considerably progressed in the past decades, experimental knowledge remains an important tool for studying the resistance to flow in fluid media where a complex environment dominates the flow ...
Antonino D’Ippolito   +4 more
doaj   +1 more source

Two-dimensional stable lattice Boltzmann simulation of turbulent flow in wavy walled channel

open access: yesAIP Advances, 2023
In recent years, the lattice Boltzmann equation has developed into a promising technique for computational fluid dynamics (CFD). The lattice Boltzmann model (LBM) approach is derived from the Boltzmann equation and kinetic theory, as opposed to the ...
Riffat Habib   +4 more
doaj   +1 more source

Enstrophy and dissipation must have the same scaling exponent in the high Reynolds number limit of fluidturbulence

open access: yes, 1999
Writing the Poisson equation for the pressure in the vorticity-strain form, we show that the pressure has a finite inertial range spectrum for high Reynolds number isotropic turbulence only if the anomalous scaling exponents $\mu$ and $\mu_{\omega}$ for ...
Nelkin, Mark
core   +1 more source

An inverse problem for the compressible Reynolds equation

open access: yesQuarterly of Applied Mathematics, 2015
We study the existence of solutions to a system of equations for equilibrium positions in lubricated journal bearings under load effects. The mechanism under consideration consists of two parallel cylinders, one inside the other, in close distance and relative motion.
Dager Salomon, Rene   +2 more
openaire   +4 more sources

A connection between the Camassa-Holm equations and turbulent flows in channels and pipes

open access: yes, 1999
In this paper we discuss recent progress in using the Camassa-Holm equations to model turbulent flows. The Camassa-Holm equations, given their special geometric and physical properties, appear particularly well suited for studying turbulent flows.
C. Foias   +6 more
core   +2 more sources

Combined Influence of Noncondensable Gas Mass Fraction and Mathematical Model on Cavitation Performance of Bearing

open access: yesInternational Journal of Rotating Machinery, 2020
The presence of cavitation in the oil film seriously affects the bearing lubrication performance and bearing capacity. Now the research of this phenomenon mostly focuses on the model of Reynolds equation (R-E equation) or Navier-Stokes equation (N-S ...
Lili Wang   +3 more
doaj   +1 more source

Nelkin scaling for the Burgers equation and the role of high-precision calculations

open access: yes, 2012
Nelkin scaling, the scaling of moments of velocity gradients in terms of the Reynolds number, is an alternative way of obtaining inertial-range information.
Chakraborty, Sagar   +3 more
core   +4 more sources

Averaged Reynolds Equation for Flows between Rough Surfaces in Sliding Motion [PDF]

open access: yes, 2002
The flow between rough surfaces in sliding motion with contacts between these surfaces, is analyzed through the volume averaging method. Assuming a Reynolds (lubrication) approximation at the roughness scale, an average flow model is obtained combining ...
Letalleur, Nicolas   +2 more
core   +2 more sources

Parametric analysis of magnetic field-dependent viscosity and advection–diffusion between rotating discs

open access: yesAdvanced Composites Letters, 2020
The constitutive expressions of unsteady Newtonian fluid are employed in the mathematical formulation to model the flow between the circular space of porous and contracting discs.
Rehan Ali Shah, Aamir Khan, Amjad Ali
doaj   +1 more source

Home - About - Disclaimer - Privacy