Results 21 to 30 of about 290,233 (267)

Velocity Distributions in Dissipative Granular Gases [PDF]

open access: yesPhysical Review Letters, 2004
Motivated by recent experiments reporting non-Gaussian velocity distributions in driven dilute granular materials, we study by numerical simulation the properties of 2D inelastic gases. We find theoretically that the form of the observed velocity distribution is governed primarily by the coefficient of restitution $η$ and $q=N_H/N_C$, the ratio between
van Zon, J.S., Mac Kintosh, F.C.
openaire   +4 more sources

Nontrivial velocity distributions in inelastic gases [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2002
4 pages, 1 ...
Krapivsky, P. L., Ben-Naim, E.
openaire   +2 more sources

Velocity distribution in a viscous granular gas [PDF]

open access: yesPhysical Review E, 2005
We investigate the velocity relaxation of a viscous one-dimensional granular gas, that is, one in which neither energy nor momentum is conserved in a collision. Of interest is the distribution of velocities in the gas as it cools, and the time dependence of the relaxation behavior.
Rosas, Alexandre   +2 more
openaire   +3 more sources

Numerical Investigation of Powered Jet Effects by RANS/LES Hybrid Methods

open access: yesXibei Gongye Daxue Xuebao, 2019
For the high-precision simulation of engine jet effects, an improved delayed detached eddy simulation (IDDES) method based on the two-equation shear stress transport (SST) model is developed, and the fifth-order finite-volume weighted essentially non ...

doaj   +1 more source

Investigation of Rotor Tip Vortex in Hover Based on IDDES Methods

open access: yesXibei Gongye Daxue Xuebao, 2019
A calculation and analysis program of high-precision numerical simulation for rotor blade tip vortex in hovering state was developed. The fifth order Roe-WENO scheme was carried out in order to reduce the numerical dissipation of the rotor wake region ...

doaj   +1 more source

On the CME velocity distribution [PDF]

open access: yesAstronomy & Astrophysics, 2006
Context. Coronal mass ejections (CMEs) are often categorized into flare-associated and filament-associated types, which logically is incomplete since there are many CMEs of the intermediate type. Aims. With this new classification, this paper aims to reexamine whether flare-associated CMEs and filament eruption-associated CMEs have distinct velocity ...
A. Q. Chen, P. F. Chen, C. Fang
openaire   +1 more source

The Effect of the Fillets on Submarine Wake Field and Propeller Unsteady Bearing Force

open access: yesJournal of Marine Science and Engineering, 2023
The uniformity of the wake on the submarine propeller disk is the key factor affecting the vibration and noise performance of the propeller. To study the influence of the fillets on the uniformity of submarine wake field and propeller unsteady bearing ...
Xiang Li   +3 more
doaj   +1 more source

A Numerical Study on the Effects of Inlet Velocity Variation on Gas-particle Flow in a Cyclone Separator [PDF]

open access: yes한국정밀공학회지
This study investigated the influence of inlet velocity on the internal flow characteristics and particle separation performance of a cyclone separator.
Geonho Kim   +3 more
doaj   +1 more source

Modeling Longitudinal Dispersion in Variable Porosity Porous Media: Control of Velocity Distribution and Microstructures

open access: yesFrontiers in Water, 2021
Hydrodynamic dispersion process in relation with the geometrical properties of the porous media are studied in two sets of 6 porous media samples of porosity θ ranging from 0.1 to 0.25. These two sets of samples display distinctly different evolutions of
Philippe Gouze   +3 more
doaj   +1 more source

The Effect of the Number of Baffles on the Performance of Solar Updraft Tower: A Numerical Study

open access: yesJRST: Jurnal Riset Sains dan Teknologi
Enhancing the amount of flow field and heat transfer characteristic is an effective way to increase the performance of SUT plants. The velocity magnitude and heat transfer characteristic can be increased by adding passive flow control in the form of ...
Teguh Hady Ariwibowo   +4 more
doaj   +1 more source

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