Stationary- and sliding beds in pipe flows of settling slurry

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F14%3A00429611" target="_blank" >RIV/67985874:_____/14:00429611 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Stationary- and sliding beds in pipe flows of settling slurry
Original language description
Investigations are discussed on the effect of stationary- and sliding beds on a behavior of settling slurry flows. Results are presented of our recent experiments with two fractions of ballotini in a 100-mm-pipe loop. Experimental work contained measurements of concentration profiles and velocity profiles. The experimental results for flows with stationary deposits are compared with predictions using our formulae for solids transport and bed friction in layered flows. CFD simulations are included to validate the velocityprofile measurements and to verify the bed roughness predictions in the flows with stationary beds. Furthermore, the measured velocity profiles are compared to profiles predicted using the log law of the wall with boundary shear velocities determined from the linear distribution of shear stress across the pipe flow. The approach is successful in the flow below the upper wall of the pipe but fails above the top of the deposit where the stress distribution is different as
Czech name
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Czech description
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Project
<a href="/en/project/GAP105%2F10%2F1574" target="_blank" >GAP105/10/1574: Flow of concentrated and complex slurries in closed conduits</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
15th International Freight Pipeline society symposium
ISBN
978-80-87117-12-5
ISSN
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e-ISSN
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Number of pages
9
Pages from-to
172-180
Publisher name
Ústav pro hydrodynamiku
Place of publication
Praha
Event location
Praha
Event date
Jun 24, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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