Počet záznamů: 1
Effect of pipe inclination on flow behaviour of fine-grained settling slurry
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SYSNO ASEP 0496739 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Effect of pipe inclination on flow behaviour of fine-grained settling slurry Tvůrce(i) Vlasák, Pavel (UH-J) SAI, ORCID, RID
Chára, Zdeněk (UH-J) SAI, ORCID, RID
Matoušek, Václav (UH-J) ORCID, SAI, RID
Konfršt, Jiří (UH-J) SAI, ORCID, RID
Kesely, Mikoláš (UH-J) ORCIDČíslo článku 02094 Zdroj.dok. EPJ Web of Conferences. - Paris : EDP Sciences, 2019 Poč.str. 7 s. Forma vydání Online - E Akce EFM18 - Experimental Fluid Mechanics 2018 Datum konání 13.11.2018 - 16.11.2018 Místo konání Prague Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova fine-grained settling slurry ; inclinated pipe flow ; gamma-ray densitometry Vědní obor RIV BK - Mechanika tekutin Obor OECD Fluids and plasma physics (including surface physics) CEP GA17-14271S GA ČR - Grantová agentura ČR Institucionální podpora UH-J - RVO:67985874 UT WOS 000504642200095 DOI 10.1051/epjconf/201921302094 Anotace The effect of flow parameters of fine-grained settling slurry on the pressure drop-velocity relationship, deposition limit velocity and local concentration distribution was studied in an experimental pipe loop of inner diameter D = 100 mm with inclinable pipe sections for pipe inclination ranging from – 45° to +45°. The slurry consisted from water and narrow particle size distribution glass beads of mean diameter d50 = 0.18 mm. The concentration distribution was studied with application of a gamma-ray densitometry. The deposition velocity was defined as the flow velocity at which stationary deposit started to be formed at the pipe invert. The study revealed the stratified flow pattern of the studied slurry in inclined pipe sections, for slurry velocities below to the deposition limit sliding or stationary bed were created in ascending pipe sections. For low pipe inclination (alpha < ± 25°) the effect of inclination on local concentration distribution was not significant. Mean transport concentration for descending flow was lower than that for the ascending flow Deposition limit in inclined pipe was slightly lower than that in horizontal pipe. Frictional pressure drops in ascending pipe were higher than that in descending pipe, the difference decreased with increasing velocity and inclination. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2020
Počet záznamů: 1