Local concentration distribution of settling slurry flow in inclined pipe sections

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F19%3A00517702" target="_blank" >RIV/67985874:_____/19:00517702 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Local concentration distribution of settling slurry flow in inclined pipe sections

Popis výsledku v původním jazyce

Freight pipelines often contain inclined sections affecting the minimum velocity at which the pipelines should operate without a danger of pipe blockage. Narrow-graded sand-water slurry was investigated on an experimental pipe loop with inclinable pipe sections of inner diameter 100 mm in the Institute of Hydrodynamics in Prague. The investigation was focused on the effect of the pipe inclination, slurry concentration and velocity on the local concentration distribution and deposition limit. The settling slurries tend to stratify in horizontal and inclined pipe sections, typically exhibiting partial or fully stratified flow. Visualization and local concentration measurements revealed the stratified flow pattern of the settling slurry in inclined pipe sections. The solids distribution varied considerably with the pipe inclination, the degree of stratification was sensitive to pipe inclination and depended on slurry concentration and flow velocity. The observed concentration profiles showed different degrees of stratification for the positive and negative slope of the pipe. The ascending flow was less stratified than the corresponding descending flow.

Název v anglickém jazyce

Local concentration distribution of settling slurry flow in inclined pipe sections

Popis výsledku anglicky

Freight pipelines often contain inclined sections affecting the minimum velocity at which the pipelines should operate without a danger of pipe blockage. Narrow-graded sand-water slurry was investigated on an experimental pipe loop with inclinable pipe sections of inner diameter 100 mm in the Institute of Hydrodynamics in Prague. The investigation was focused on the effect of the pipe inclination, slurry concentration and velocity on the local concentration distribution and deposition limit. The settling slurries tend to stratify in horizontal and inclined pipe sections, typically exhibiting partial or fully stratified flow. Visualization and local concentration measurements revealed the stratified flow pattern of the settling slurry in inclined pipe sections. The solids distribution varied considerably with the pipe inclination, the degree of stratification was sensitive to pipe inclination and depended on slurry concentration and flow velocity. The observed concentration profiles showed different degrees of stratification for the positive and negative slope of the pipe. The ascending flow was less stratified than the corresponding descending flow.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA17-14271S" target="_blank" >GA17-14271S: Vliv sklonu potrubí na kritickou rychlost a rychlost skluzu heterogenní suspenze</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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