Concentration distribution and deposition limit of medium-coarse sand-water slurry in inclined pipe

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F20%3A00517222" target="_blank" >RIV/67985874:_____/20:00517222 - isvavai.cz</a>

Result on the web

<a href="http://hdl.handle.net/11104/0307261" target="_blank" >http://hdl.handle.net/11104/0307261</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/johh-2019-0023" target="_blank" >10.2478/johh-2019-0023</a>

Result language

angličtina

Original language name

Concentration distribution and deposition limit of medium-coarse sand-water slurry in inclined pipe

Original language description

Sand-water slurry was investigated on an experimental pipe loop of inner diameter D = 100 mm with the hori-zontal, inclined, and vertical smooth pipe sections. A narrow particle size distribution silica sand of mean diameter0.87 mm was used. The experimental investigation focused on the effects of pipe inclination, overall slurry concentration, and mean velocity on concentration distribution and deposition limit velocity. The measured concentration profiles showed different degrees of stratification for the positive and negative pipe inclinations. The degree of stratification depended on the pipe inclination and on overall slurry concentrationand velocity. The ascending flow was less stratified than the cor-responding descending flow, the difference increasing from horizontal flow up to an inclination angle of about +30°. The deposition limit velocity was sensitive to the pipe inclination,reaching higher values in the ascending than in the hori-zontal pipe. The maximum deposition limit value was reached for an inclination angle of about +25°, and the limit remained practically constant in value, about 1.25 times higher than that in the horizontal pipe. Conversely, in the de-scending pipe, the deposition limit decreased significantly with the negative slopes and tended to be zero for an inclina-tion angle of about −30°, where no stationary bed was observed.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

<a href="/en/project/GA17-14271S" target="_blank" >GA17-14271S: Effect of pipe inclination on deposition-limit velocity and slip velocity of heterogeneous slurries</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Journal of Hydrology and Hydromechanics

ISSN

0042-790X

e-ISSN

—

Volume of the periodical

68

Issue of the periodical within the volume

1

Country of publishing house

SK - SLOVAKIA

Number of pages

9

Pages from-to

83-91

UT code for WoS article

000514680600009

EID of the result in the Scopus database

2-s2.0-85082082868