Anomalous pressure drop in settling slurry flow through pipe of mild negative slope

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F19%3A00517695" target="_blank" >RIV/67985874:_____/19:00517695 - 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
Anomalous pressure drop in settling slurry flow through pipe of mild negative slope
Original language description
In an inclined pipe carrying settling slurry, the manometric pressure drop tends to increase with the increasing angle of inclination primarily due to the increasing static contribution affected by the slurry density. Our experiments show that, surprisingly enough, this trend is not continuous if a broad range of inclination angles is considered, including negative angles (i.e. descending flows). Instead, a local peak occurs in the manometric pressure drop at the angle of about – 15 degrees. The observed effect is associated with changes in solids distribution caused by a variation in the angle of inclination. In the paper, the effect is explained using measured solids distributions and using an analysis of governing mechanisms. It is demonstrated that this effect can be predicted by a layered model for inclined settling slurry flows. Model predictions of negatively sloped flows are discussed in further details, particularly predictions of descending flows near the deposition limit.
Czech name
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Czech description
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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
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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