3D numerical model of the spherical particle saltation in a channel with a rough fixed bed

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F09%3A00330616" target="_blank" >RIV/67985874:_____/09:00330616 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

3D numerical model of the spherical particle saltation in a channel with a rough fixed bed

Original language description

The paper describes a 3D numerical model of the spherical particle saltation. The particle free motion in water and the particle-bed collision were distinguished. The particle motion consists of the translational and rotational particle motion. A stochastic method of calculation of the particle-bed collision was developed. The collision height and the contact point were defined as random variables. Impulse equations were used and the translational and angular velocity components of the moving particle immediately after the collision were expressed as functions of the velocity components just before the collision. The dimensionless coefficients of the drag force and drag torque were determined as functions of both translational and rotational Reynolds numbers. The model is in good agreement with known experimental data. Examples of calculation of the particles? lateral dispersion and the mean absolute values of the deviation angle of the particle trajectory are presented.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BK - Liquid mechanics

OECD FORD branch

—

Project

<a href="/en/project/GA103%2F06%2F1487" target="_blank" >GA103/06/1487: Mathematical modelling and numerical simulation of the particle saltation in a channel</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Hydrology and Hydromechanics. Vodohospodársky časopis

ISSN

0042-790X

e-ISSN

—

Volume of the periodical

57

Issue of the periodical within the volume

2

Country of publishing house

SK - SLOVAKIA

Number of pages

13

Pages from-to

—

UT code for WoS article

000267238300003

EID of the result in the Scopus database

—