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Laminar and turbulent transition of non-newtonian slurries
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SYSNO ASEP 0361108 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Laminar and turbulent transition of non-newtonian slurries Tvůrce(i) Vlasák, Pavel (UH-J) SAI, ORCID, RID
Chára, Zdeněk (UH-J) SAI, ORCID, RIDZdroj.dok. Matematičeskije metody v technike i technologijach MMTT-24, Sekcija 3 - Tom 3. - Saratov : Saratovskij gosudarstvennyj techničeskij universitet, 2011 - ISBN 978-5-7433-2386-9 Rozsah stran s. 16-20 Poč.str. 5 s. Akce Meždunarodnaja naučnaja konferencija Matematičeskije metody v technike i technologijach /24./ Datum konání 31.05.2011-02.06.2011 Místo konání Kyjev Země UA - Ukrajina Typ akce WRD Jazyk dok. eng - angličtina Země vyd. RU - Rusko Klíč. slova kaolin slurry ; fly ash slurry ; laminar/turbulent transition ; pressure fluctuation Vědní obor RIV BK - Mechanika tekutin CEP GAP105/10/1574 GA ČR - Grantová agentura ČR CEZ AV0Z20600510 - UH-J (2005-2011) Anotace The Kaolin and fly ash slurries were measured on the experimental pipeline loop of inner diameter 17.5, 26.8 and 36 mm. An attention was paid to the laminar/turbulent transition, which can be well indicating by pressure fluctuations. At the beginning of the laminar/turbulent transition the hydraulic gradient steeply increases with increasing velocity. It is accompanied by the different patterns of the differential pressure fluctuation for the laminar, transitional and turbulent regimes. In the laminar regime the pressure fluctuations are of small amplitude and temporally limited. A high level of instability, eddy formation and pressure fluctuation are characteristic for the transition region, the amplitude of pressure fluctuations increases with increasing slurry velocity. For the turbulent regime the frequency of pressure pulsations becomes higher and due to filtration of the pressure signal the pressure gradient record seems to be relatively smoother. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2012
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