Condition for the Incipient Motion of Non-Cohesive Particles Due to Laminar Flows of Power-Law Fluids in Closed Conduits
The results of an experimental study on the condition of incipient transport of non-cohesive particles due to the flow of a power-law fluid in a rectangular pipe are presented in this article. The pipe can change its inclination, and experiments were carried out with positive and negative slopes. Fr...
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doaj-87294dfa9b184c938d579229e278ec6a2020-11-25T02:10:01ZengMDPI AGWater2073-44412020-05-01121295129510.3390/w12051295Condition for the Incipient Motion of Non-Cohesive Particles Due to Laminar Flows of Power-Law Fluids in Closed ConduitsAldo Tamburrino0Cristóbal Traslaviña1Department of Civil Engineering, University of Chile, Santiago 8370448, ChileDepartment of Civil Engineering, University of Chile, Santiago 8370448, ChileThe results of an experimental study on the condition of incipient transport of non-cohesive particles due to the flow of a power-law fluid in a rectangular pipe are presented in this article. The pipe can change its inclination, and experiments were carried out with positive and negative slopes. From a dimensional analysis, the parameters that define the condition of incipient motion were found and validated with experimental data. Thus, the threshold condition is well defined by a particle Reynolds number and a Galileo number, properly modified to take into account the power-law rheology of the fluid. The experimental data are also presented in a standard Shields diagram, including the data obtained in other studies carried out in open-channel laminar flows of Newtonian and power-law fluids.https://www.mdpi.com/2073-4441/12/5/1295incipient motionpower-law fluidclosed conduitnon-Newtonian fluidGalileo numberlaminar flow |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Aldo Tamburrino Cristóbal Traslaviña |
spellingShingle |
Aldo Tamburrino Cristóbal Traslaviña Condition for the Incipient Motion of Non-Cohesive Particles Due to Laminar Flows of Power-Law Fluids in Closed Conduits Water incipient motion power-law fluid closed conduit non-Newtonian fluid Galileo number laminar flow |
author_facet |
Aldo Tamburrino Cristóbal Traslaviña |
author_sort |
Aldo Tamburrino |
title |
Condition for the Incipient Motion of Non-Cohesive Particles Due to Laminar Flows of Power-Law Fluids in Closed Conduits |
title_short |
Condition for the Incipient Motion of Non-Cohesive Particles Due to Laminar Flows of Power-Law Fluids in Closed Conduits |
title_full |
Condition for the Incipient Motion of Non-Cohesive Particles Due to Laminar Flows of Power-Law Fluids in Closed Conduits |
title_fullStr |
Condition for the Incipient Motion of Non-Cohesive Particles Due to Laminar Flows of Power-Law Fluids in Closed Conduits |
title_full_unstemmed |
Condition for the Incipient Motion of Non-Cohesive Particles Due to Laminar Flows of Power-Law Fluids in Closed Conduits |
title_sort |
condition for the incipient motion of non-cohesive particles due to laminar flows of power-law fluids in closed conduits |
publisher |
MDPI AG |
series |
Water |
issn |
2073-4441 |
publishDate |
2020-05-01 |
description |
The results of an experimental study on the condition of incipient transport of non-cohesive particles due to the flow of a power-law fluid in a rectangular pipe are presented in this article. The pipe can change its inclination, and experiments were carried out with positive and negative slopes. From a dimensional analysis, the parameters that define the condition of incipient motion were found and validated with experimental data. Thus, the threshold condition is well defined by a particle Reynolds number and a Galileo number, properly modified to take into account the power-law rheology of the fluid. The experimental data are also presented in a standard Shields diagram, including the data obtained in other studies carried out in open-channel laminar flows of Newtonian and power-law fluids. |
topic |
incipient motion power-law fluid closed conduit non-Newtonian fluid Galileo number laminar flow |
url |
https://www.mdpi.com/2073-4441/12/5/1295 |
work_keys_str_mv |
AT aldotamburrino conditionfortheincipientmotionofnoncohesiveparticlesduetolaminarflowsofpowerlawfluidsinclosedconduits AT cristobaltraslavina conditionfortheincipientmotionofnoncohesiveparticlesduetolaminarflowsofpowerlawfluidsinclosedconduits |
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