Change search
Link to record
Permanent link

Direct link
BETA
Sellgren, Anders
Publications (10 of 97) Show all publications
Matoušek, V., Visintainer, R., Furlan, J. & Sellgren, A. (2018). Threshold Criteria for Components of Predictive Model for Pipe Flow of Broadly-Graded Slurry. In: ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting: Volume 3: Fluid Machinery; Erosion, Slurry, Sedimentation; Experimental, Multiscale, and Numerical Methods for Multiphase Flows; Gas-Liquid, Gas-Solid, and Liquid-Solid Flows; Performance of Multiphase Flow Systems; Micro/Nano-Fluidics. Paper presented at ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting, Montreal, Quebec, Canada, July 15–20, 2018. The American Society of Mechanical Engineers, 3, Article ID T19A008.
Open this publication in new window or tab >>Threshold Criteria for Components of Predictive Model for Pipe Flow of Broadly-Graded Slurry
2018 (English)In: ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting: Volume 3: Fluid Machinery; Erosion, Slurry, Sedimentation; Experimental, Multiscale, and Numerical Methods for Multiphase Flows; Gas-Liquid, Gas-Solid, and Liquid-Solid Flows; Performance of Multiphase Flow Systems; Micro/Nano-Fluidics, The American Society of Mechanical Engineers , 2018, Vol. 3, article id T19A008Conference paper, Published paper (Refereed)
Abstract [en]

Industrial slurries transported in pressurized pipelines often consist of particles of broad size distribution. The broad particle size distribution affects slurry flow behavior in a pipe. A four-component model (4CM) predicts the frictional pressure drop in pipe flow of broadly graded slurry. The model considers Newtonian carrying liquid and splits the broadly graded solids into fractions (components) each of which contributes to the pressure drop through its own dominating friction mechanism expressed by a particular sub-model in the 4CM. The sorting of the solids into the components (carrier, pseudo-homogeneous, heterogeneous, fully-stratified) must be based on appropriate criteria. For the sake of simplicity, the 4CM currently uses threshold sizes of particles to split the solids into 4 components.

The goal of the present work is to analyze the existing criteria for the threshold between the pseudo-homogeneous component and heterogeneous component and for the threshold between the heterogeneous component and fully-stratified component. The analysis is based on a description of mechanisms governing particle support (suspension, deposition) of each particular solids component in slurry flow. It shows that the existing grain-size thresholds actually express certain proportions among threshold velocities of flow delimiting different slurry flow regimes. Such threshold velocities are the deposition-limit velocity, the initial-suspension velocity, and the full-suspension velocity. We discuss the proportions and demonstrate how properties (of liquid, solids, flow) and associated parameters additional to the grain size may influence the thresholds.

The analytical results are supported by experimental results for flow of individual components in a laboratory loop.

Place, publisher, year, edition, pages
The American Society of Mechanical Engineers, 2018
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-72332 (URN)10.1115/FEDSM2018-83455 (DOI)2-s2.0-85056162769 (Scopus ID)978-0-7918-5157-9 (ISBN)
Conference
ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting, Montreal, Quebec, Canada, July 15–20, 2018
Available from: 2019-01-08 Created: 2019-01-08 Last updated: 2019-01-08Bibliographically approved
Sellgren, A., Visintainer, R. J. & Furlan, J. M. (2017). Centrifugal slurry pump performance deratings: A coherent approach. In: 20th International Conference on Hydrotransport: . Paper presented at 20th International Conference on Hydrotransport, Melbourne, Australia, 3-5 May 2017 (pp. 401-414). BHR Group Limited
Open this publication in new window or tab >>Centrifugal slurry pump performance deratings: A coherent approach
2017 (English)In: 20th International Conference on Hydrotransport, BHR Group Limited , 2017, p. 401-414Conference paper, Published paper (Refereed)
Abstract [en]

A basis for a coherent derating approach, which is founded on principal parameters from commonly referred to derating procedures, is discussed. A weighting technique may couple the diminishing drag influences to rheological effects for the intermediate two-component and viscous area here represented by highly concentrated mine tailings slurries. Loop test results with authentic tailings demonstrated the decreasing head derating with increased rotary speed and thus the viscous influence, a dependence which increased with particle fineness. A marked effect on the derating with yield stresses of 200-260 Pa was also found. Maximum reductions in head and efficiency were 15 and 25%, respectively, at solids concentrations by volume of up to about 50%

Place, publisher, year, edition, pages
BHR Group Limited, 2017
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-65034 (URN)2-s2.0-85021806539 (Scopus ID)
Conference
20th International Conference on Hydrotransport, Melbourne, Australia, 3-5 May 2017
Available from: 2017-08-14 Created: 2017-08-14 Last updated: 2017-11-24Bibliographically approved
Visintainer, R. J., Furlan, J. M., McCall, G., Sellgren, A. & Matoušek, V. (2017). Comprehensive loop testing of a broadly graded (4-component) slurry. In: 20th International Conference on Hydrotransport: . Paper presented at 20th International Conference on Hydrotransport, Melbourne, Australia, 3-5 May 2017 (pp. 307-323). BHR Group Limited
Open this publication in new window or tab >>Comprehensive loop testing of a broadly graded (4-component) slurry
Show others...
2017 (English)In: 20th International Conference on Hydrotransport, BHR Group Limited , 2017, p. 307-323Conference paper, Published paper (Refereed)
Abstract [en]

A 4-component model for settling slurry pipeline friction loss has been previously described by Wilson and Sellgren. The goal of the present work was to collect a comprehensive and accurate data set spanning multiple flow regimes for the purpose of validating and calibrating the model. This was accomplished by obtaining four different graded silica and crushed granite products representing the four model components. These were then combined and tested in permutations from the individual components to the complete mixture at various concentrations. Primary experiments were carried out in a 203 mm (8 inch) pipeline with selected corresponding experiments repeated in a 103 mm (4 inch) pipeline for validation of pipe size scaling. In all, 40 tests were performed with particle sizes ranging from minus 40 m to 12.5 mm, d50 particle sizes from minus 40 μm to 7.5 mm, and delivered solids concentrations from 4% to 38% by volume. Particle size distributions varied from very narrow to very broad, with d85/d50 ratios ranging from 1.3 to 30. Analysis of the data suggested the introduction of two new correlating factors which have resulted in good agreement between the comprehensive data set and the revised model.

Place, publisher, year, edition, pages
BHR Group Limited, 2017
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-65038 (URN)2-s2.0-85021836836 (Scopus ID)
Conference
20th International Conference on Hydrotransport, Melbourne, Australia, 3-5 May 2017
Available from: 2017-08-14 Created: 2017-08-14 Last updated: 2017-11-24Bibliographically approved
Furlan, J. M., Visintainer, R. J. & Sellgren, A. (2016). Centrifugal pump performance when handling highly non-Newtonian clays and tailings slurries (ed.). Paper presented at 19th International Conference on Hydrotransport, September 24-26 2014, Golden, Colorado. Canadian Journal of Chemical Engineering, 94(6), 1108-1115
Open this publication in new window or tab >>Centrifugal pump performance when handling highly non-Newtonian clays and tailings slurries
2016 (English)In: Canadian Journal of Chemical Engineering, ISSN 0008-4034, E-ISSN 1939-019X, Vol. 94, no 6, p. 1108-1115Article in journal (Refereed) Published
Abstract [en]

Recent loop testing performed at the GIW Hydraulic Lab (Furlan et al. 2013, 2014) has provided pump performance data for two highly non-Newtonian slurries of significantly different character: a high clay content slurry with minimal coarse solids; and a typical, low clay content, two component tailings slurry. The importance of air removal in the sump and pipe loop was demonstrated using a simple, yet novel de-aeration system. In addition to the measurement of performance losses, determination of the upper limit of "pumpability" for these slurries relative to their concentration and associated yield stress was investigated. However, once the slurry was de-aerated, no limits could be found, other than those dictated by suction side losses (NPSHA) or excessive pipeline friction gradients, indicating that the only true limit in practice is one of system economics, i.e. pump operating and capital cost. Experimentally measured pump head and efficiency were compared against corresponding predictions from two different models: the Walker and Goulas technique (Walker and Goulas, 1983), and the Graham et al. technique (Graham et al., 2009), with special focus given to the dependence of the losses on pump rotary speed.

National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-30773 (URN)10.1002/cjce.22495 (DOI)000376072800013 ()2-s2.0-84965150616 (Scopus ID)4b4f6796-ca95-4591-98fe-339410bb7b58 (Local ID)4b4f6796-ca95-4591-98fe-339410bb7b58 (Archive number)4b4f6796-ca95-4591-98fe-339410bb7b58 (OAI)
Conference
19th International Conference on Hydrotransport, September 24-26 2014, Golden, Colorado
Note

Validerad; 2016; Nivå 1; 20160428 (andbra)

; Konferensartikel i tidskriftAvailable from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved
Wilson, K. & Sellgren, A. (2016). Developments in slurry flow modelling in a historical perspective. Paper presented at 19th International Conference on Hydrotransport, September 24-26 2014, Golden, Colorado. Canadian Journal of Chemical Engineering, 94(6), 1019-1024
Open this publication in new window or tab >>Developments in slurry flow modelling in a historical perspective
2016 (English)In: Canadian Journal of Chemical Engineering, ISSN 0008-4034, E-ISSN 1939-019X, Vol. 94, no 6, p. 1019-1024Article in journal (Refereed) Published
Abstract [en]

Durand's slurry flow model attempted to find a single formula for sand-size particles and larger, but Babcock's data showed that a single formula could not apply. A subsequent group of models is based on Wilson's layered force-balance analysis of slurry flows applied to friction losses and deposition limit. Models based on variants of this analysis include those by Shook and others at the Saskatchewan Research Council (SRC). Early versions of Wilson's model relied on particle fall velocity to find friction losses, but the classical iterative method of finding fall velocity has now been replaced by a direct method. This is based on the shear Reynolds number of the particle, which can be expressed in terms of the better known Archimedes number. Thus, calculations of slurry friction and limit of deposition involve two principal parameters: the Archimedes number and the diameter ratio d/D.

National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-60902 (URN)10.1002/cjce.22490 (DOI)000376072800002 ()2-s2.0-84965123235 (Scopus ID)b77f1ced-1c25-46fd-b54e-54d68bb368be (Local ID)b77f1ced-1c25-46fd-b54e-54d68bb368be (Archive number)b77f1ced-1c25-46fd-b54e-54d68bb368be (OAI)
Conference
19th International Conference on Hydrotransport, September 24-26 2014, Golden, Colorado
Note

Validerad; 2016; Nivå 1; 2016-12-04 (kribac); Konferensartikel i tidskrift

Available from: 2016-12-04 Created: 2016-12-04 Last updated: 2018-07-10Bibliographically approved
Sellgren, A., Visintainer, R. J., Furlan, J. M. & Matousek, V. (2016). Pump and pipeline performance when pumping slurries with different particle gradings (ed.). Paper presented at International Conference on Hydrotransport : 24/09/2014 - 26/09/2014. Canadian Journal of Chemical Engineering, 94(6), 1025-1031
Open this publication in new window or tab >>Pump and pipeline performance when pumping slurries with different particle gradings
2016 (English)In: Canadian Journal of Chemical Engineering, ISSN 0008-4034, E-ISSN 1939-019X, Vol. 94, no 6, p. 1025-1031Article in journal (Refereed) Published
Abstract [en]

A pipeline slurry friction loss model consisting of three regimes was initially proposed by Wilson then extended to four components consisting of fluid, pseudo-homogeneous, heterogeneous, and fully stratified regimes. The weighting technique using up to four regime-related components often works well for friction loss estimations based on simple input data and model parameters. This also holds for the Hydraulic Institute's pump performance derating procedure for settling slurries. The comparisons and discussion focus on coarse particle slurries and some cases where the modelling estimations for pipeline and pump performance were not particularly accurate

National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-37658 (URN)10.1002/cjce.22489 (DOI)000376072800003 ()2-s2.0-84992302755 (Scopus ID)bbdc5242-8557-438c-9c33-35ab6880f8ea (Local ID)bbdc5242-8557-438c-9c33-35ab6880f8ea (Archive number)bbdc5242-8557-438c-9c33-35ab6880f8ea (OAI)
Conference
International Conference on Hydrotransport : 24/09/2014 - 26/09/2014
Note

Validerad; 2016; Nivå 1; 20160502 (andbra); Konferensartikel i tidskrift

Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2018-07-10Bibliographically approved
Sellgren, A. (2015). How many industrial slurries behave when transported (ed.). Paper presented at Conference in Minerals Engineering 2015 : 03/02/2015 - 04/02/2015. Paper presented at Conference in Minerals Engineering 2015 : 03/02/2015 - 04/02/2015.
Open this publication in new window or tab >>How many industrial slurries behave when transported
2015 (English)Conference paper, Oral presentation only (Refereed)
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-32818 (URN)76c18c08-b751-4209-8318-a21f02f09784 (Local ID)76c18c08-b751-4209-8318-a21f02f09784 (Archive number)76c18c08-b751-4209-8318-a21f02f09784 (OAI)
Conference
Conference in Minerals Engineering 2015 : 03/02/2015 - 04/02/2015
Note
Godkänd; 2015; 20150226 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Sellgren, A., Furlan, J. & Visintainer, R. (2014). Centrifugal pump performance on a high-yield stress tailings slurry (ed.). In: (Ed.), (Ed.), Paste 2014: Proceedings of the 17th International Seminar on Paste and Thickened Tailings, Vancouver, Canada, 8-12 June 2014. Paper presented at International Seminar on Paste and Thickened Tailings : 08/06/2014 - 12/06/2014 (pp. 525-538). : InfoMine Inc.
Open this publication in new window or tab >>Centrifugal pump performance on a high-yield stress tailings slurry
2014 (English)In: Paste 2014: Proceedings of the 17th International Seminar on Paste and Thickened Tailings, Vancouver, Canada, 8-12 June 2014, InfoMine Inc. , 2014, p. 525-538Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
InfoMine Inc., 2014
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-37767 (URN)be2d9880-3f58-41f5-ba41-fd002b595c5f (Local ID)978-0-9917905-3-1 (ISBN)be2d9880-3f58-41f5-ba41-fd002b595c5f (Archive number)be2d9880-3f58-41f5-ba41-fd002b595c5f (OAI)
Conference
International Seminar on Paste and Thickened Tailings : 08/06/2014 - 12/06/2014
Note
Godkänd; 2014; 20141210 (ninhul)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved
Furlan, J. M., Visintainer, R. J. & Sellgren, A. (2014). Centrifugal pump performance when handling highly non-Newtonian clays and tailings slurries (ed.). In: (Ed.), 19th International Conference on Hydrotransport 2014: Golden, 24 - 26 September 2014. Paper presented at 19th International Conference on Hydrotransport, 24-26 Septembeer 2014, Golden, Colorado (pp. 117-130). Curran Associates, Inc.
Open this publication in new window or tab >>Centrifugal pump performance when handling highly non-Newtonian clays and tailings slurries
2014 (English)In: 19th International Conference on Hydrotransport 2014: Golden, 24 - 26 September 2014, Curran Associates, Inc., 2014, p. 117-130Conference paper, Published paper (Refereed)
Abstract [en]

Recent loop testing performed at the GIW Hydraulic Lab (Furlan et al. 2013, 2014) has provided pump performance data for two highly non-Newtonian slurries of significantly different character: a high clay content slurry with minimal coarse solids; and a typical, low clay content, two component tailings slurry. The importance of air removal in the sump and pipe loop was demonstrated using a simple, yet novel de-aeration system. In addition to the measurement of performance losses, determination of the upper limit of "pumpability" for these slurries relative to their concentration and associated yield stress was investigated. However, once the slurry was de-aerated, no limits could be found, other than those dictated by suction side losses (NPSHA) or excessive pipeline friction gradients, indicating that the only true limit in practice is one of system economics, i.e. pump operating and capital cost. Experimentally measured pump head and efficiency were compared against corresponding predictions from two different models: the Walker and Goulas technique (Walker and Goulas, 1983), and the Graham et al. technique (Graham et al., 2009), with special focus given to the dependence of the losses on pump rotary speed.

Place, publisher, year, edition, pages
Curran Associates, Inc., 2014
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-34835 (URN)2-s2.0-84922985451 (Scopus ID)922e5121-9f25-4570-9daf-37c2eb85815e (Local ID)978-1-63439-444-4 (ISBN)922e5121-9f25-4570-9daf-37c2eb85815e (Archive number)922e5121-9f25-4570-9daf-37c2eb85815e (OAI)
Conference
19th International Conference on Hydrotransport, 24-26 Septembeer 2014, Golden, Colorado
Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Wilson, K. C. & Sellgren, A. (2014). Developments in slurry flow modelling in historical perspective (ed.). In: (Ed.), (Ed.), 19th International Conference on Hydrotransport 2014: Golden, 24 - 26 September 2014. Paper presented at International Conference on Hydrotransport : 24/09/2014 - 26/09/2014 (pp. 279-290).
Open this publication in new window or tab >>Developments in slurry flow modelling in historical perspective
2014 (English)In: 19th International Conference on Hydrotransport 2014: Golden, 24 - 26 September 2014, 2014, p. 279-290Conference paper, Published paper (Refereed)
Abstract [en]

Durand's model attempted to find a single formula for sand size and above, but Babcock's data showed that a single formula could not apply. A subsequent group of models is based on Wilson's layered force-balance analysis of slurry flows; applied to friction losses and deposition limit. Models based on variants of this analysis include those by Shook and others at the Saskatchewan Research Council, SRC. Early versions of Wilson's model relied on particle fall velocity to find friction losses, but the classical iterative method of finding fall velocity has now been replaced by a direct method. This is based on the shear Reynolds number of the particle, which can be expressed in terms of the better known Archimedes number, making calculations of slurry friction and limit of deposition involve two principal parameters: the Archimedes number and the diameter ratio d/D.

National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
urn:nbn:se:ltu:diva-29875 (URN)37e318a2-0d35-4fd9-af79-ec74df6c27f9 (Local ID)978-1-63439-444-4 (ISBN)37e318a2-0d35-4fd9-af79-ec74df6c27f9 (Archive number)37e318a2-0d35-4fd9-af79-ec74df6c27f9 (OAI)
Conference
International Conference on Hydrotransport : 24/09/2014 - 26/09/2014
Note
Godkänd; 2014; 20141210 (ninhul)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Organisations

Search in DiVA

Show all publications