Large scale, 4-component, settling slurry tests for validation of pipeline friction loss and pump head derate models

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00360776" target="_blank" >RIV/68407700:21110/22:00360776 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.westerndredging.org/phocadownload/WEDA_Journal_of_Dredging_Vol_20_No_1.pdf" target="_blank" >https://www.westerndredging.org/phocadownload/WEDA_Journal_of_Dredging_Vol_20_No_1.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Large scale, 4-component, settling slurry tests for validation of pipeline friction loss and pump head derate models

Popis výsledku v původním jazyce

A 4-component model for settling slurry pipe flow has been previously described by Wilson and Sellgren (2001) to predict pipeline friction loss over a range of slurry compositions: from fine to coarse particle size, narrow to broad particle size distribution, and low to high solids concentration. Further development of the model was undertaken by Visintainer et al. (2017a, 2021) based on a comprehensive set of laboratory tests in 203 mm (8 in) and 103 mm (4 in) pipelines. This was later adapted to the modelling of settling slurry performance reductions (derates) for centrifugal pumps (Visintainer 2017b). The goal of the present work is to validate the applicability of the 4-component model to larger pipeline sizes, typical for dredging installations. To that end, a second comprehensive test program, similar to those previously run, has been conducted in a 489 mm (20 in) pipe loop with a correspondingly larger pump. In all, 24 tests were performed with particle sizes ranging from <40 µm to 25 mm, d50 particle sizes from <40 µm to 11 mm and delivered solids concentrations from 4% to 40% by volume. Particle size distributions varied from very narrow to very broad, with d85/d50 ratios ranging from 1.5 to 320. The resulting data have been compared to the current formulation of the 4-component pipeline friction loss and pump head reduction models to assess the applicability of these models for use with larger pipelines and pumps.

Název v anglickém jazyce

Large scale, 4-component, settling slurry tests for validation of pipeline friction loss and pump head derate models

Popis výsledku anglicky

A 4-component model for settling slurry pipe flow has been previously described by Wilson and Sellgren (2001) to predict pipeline friction loss over a range of slurry compositions: from fine to coarse particle size, narrow to broad particle size distribution, and low to high solids concentration. Further development of the model was undertaken by Visintainer et al. (2017a, 2021) based on a comprehensive set of laboratory tests in 203 mm (8 in) and 103 mm (4 in) pipelines. This was later adapted to the modelling of settling slurry performance reductions (derates) for centrifugal pumps (Visintainer 2017b). The goal of the present work is to validate the applicability of the 4-component model to larger pipeline sizes, typical for dredging installations. To that end, a second comprehensive test program, similar to those previously run, has been conducted in a 489 mm (20 in) pipe loop with a correspondingly larger pump. In all, 24 tests were performed with particle sizes ranging from <40 µm to 25 mm, d50 particle sizes from <40 µm to 11 mm and delivered solids concentrations from 4% to 40% by volume. Particle size distributions varied from very narrow to very broad, with d85/d50 ratios ranging from 1.5 to 320. The resulting data have been compared to the current formulation of the 4-component pipeline friction loss and pump head reduction models to assess the applicability of these models for use with larger pipelines and pumps.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

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Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

WEDA Journal of Dredging

ISSN

2150-9409

e-ISSN

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Svazek periodika

20

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

16-37

Kód UT WoS článku

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EID výsledku v databázi Scopus

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