Detail publikace

Incipient motion of coarse uniform gravel

ROUŠAR, L. ZACHOVAL, Z. JULIEN, P.

Originální název

Incipient motion of coarse uniform gravel

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The influence of several parameters on the incipient motion of gravels has been carefully examined from theoretical and experimental standpoints. The effect of the longitudinal bed slope is significant and well described with existing methods. This analysis shows that the effects of the grain Reynolds number and relative submergence are negligible for turbulent flows over hydraulically rough boundaries. Laboratory experiments for homogeneous gravels on a plane bed provided detailed measurements of both mean flow velocity and velocity fluctuations for the analysis of the lift and drag coefficients. This analysis of the lift and drag coefficients enables a better evaluation of the Shields parameter for incipient motion as a function of the angle of repose . The theoretical developments presented in this paper are corroborated by the results of our laboratory experiments as well as many others available in the literature.

Klíčová slova

Incipient motion, mathematical model, relative submergence, sediment transport, Shields parameter

Autoři

ROUŠAR, L.; ZACHOVAL, Z.; JULIEN, P.

Vydáno

16. 8. 2016

Nakladatel

Taylor & Francis Group

Místo

Abingdon

ISSN

0022-1686

Periodikum

JOURNAL OF HYDRAULIC RESEARCH

Ročník

54

Číslo

6

Stát

Nizozemsko

Strany od

615

Strany do

630

Strany počet

16

URL

http://www.tandfonline.com/doi/full/10.1080/00221686.2016.1212286

BibTex

@article{BUT128935,
  author="Ladislav {Roušar} and Zbyněk {Zachoval} and Pierre {Julien}",
  title="Incipient motion of coarse uniform gravel",
  journal="JOURNAL OF HYDRAULIC RESEARCH",
  year="2016",
  volume="54",
  number="6",
  pages="615--630",
  doi="10.1080/00221686.2016.1212286",
  issn="0022-1686",
  url="http://www.tandfonline.com/doi/full/10.1080/00221686.2016.1212286"
}