Modeling of sand-water slurry flow through horizontal pipe using CFD

Gopaliya, Manoj Kumar; Kaushal, D. R.

doi:10.1515/johh-2016-0027

Cited by 69 publications

(24 citation statements)

References 34 publications

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“…The height of the deposit of soil was non-dimensionalized using conduit diameters in Equation (12). As a result of the linear regression analysis between deposit height and the model, it a correlation coefficient (R 2 ) of 0.877 was obtained.…”

Section: Prediction Model For Height Of Particle Deposition In Sewer mentioning

confidence: 99%

“…Thus, in the analysis, the interaction between the fluids and particles increased, and the deposition height showed small changes compared with various other conditions. Equation (12) can thus be used within the conditions of this analysis, and the flow of soil and slurry had various shapes and sizes of particles. Thus, these results as well as wider operation conditions should be reflected in modeling in future studies.…”

Section: Prediction Model For Height Of Particle Deposition In Sewer mentioning

confidence: 99%

“…It is impossible to model a phenomenon when a complex process occurs at the same time, and thus two-phase flow must be considered [7][8][9][10][11][12]. Moreover, mixing occurs inside conduits when soil enters them [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Predicting Sedimentation in Urban Sewer Conduits

Yangho

Yun

Lee

et al. 2018

Water

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Sedimentation commonly occurs in urban drainage systems, disrupts flow, and is one of the major causes of inundation. The complicated phenomena that alter the cross-section of sewer conduits include transportation, precipitation, and sedimentation, and need to be analyzed for the proper design and efficient maintenance of urban drainage systems. In this study, the discharge capacity of urban drainage systems is simulated and analyzed by considering the pattern of flow of sediments in sewer conduits through a numerical analysis model. The sites of the highest and lowest accumulation of soil were examined as sedimentation occurred, as was discharge due to accumulation in sewer conduits. The purpose of this study is the examination of mathematical models for two-phase fluid flow analysis and the prediction of sedimentation in urban sewer conduits. An expression for the height of the sedimentation was obtained to assess the discharge capacity of urban drainage systems, and a model to predict accumulation in sewer conduits was developed using non-dimensional variables for inlet velocity, inlet particle volume fraction, and particle size. When subjected to linear regression analysis, the model yielded a high correlation coefficient (R 2 ) of 0.899. This satisfied the aims of this study, to obtain a higher discharge capacity and a plan for the design of urban drainage systems.

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Section: Prediction Model For Height Of Particle Deposition In Sewer mentioning

confidence: 99%

Section: Prediction Model For Height Of Particle Deposition In Sewer mentioning

confidence: 99%

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Predicting Sedimentation in Urban Sewer Conduits

Yangho

Yun

Lee

et al. 2018

Water

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“…Pumping such a mixture through the system requires the use of a suitable pump, which must be selected on the basis of major and minor head loss data [22]. The influence of sand on head losses has been confirmed in studies which show that head losses increase with increasing sand concentration and grain size [23]. The drop in pressure is smaller when water with sand flows vertically than when it flows horizontally, all other things being equal [24].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Concentration of Sand in a Mixture of Water and Sand Flowing through PP and PVC Elbows on the Minor Head Loss Coefficient

Wichowski¹,

Siwiec²,

Kalenik³

2019

Preprint

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The article presents the results of tests of minor head losses through PVC and PP elbows for a flow of water and mixtures of water and sand with grain sizes of up to 0.5 mm and concentrations of 5.6 g∙L-1, 10.84 g∙L-1, and 15.73 g∙L-1. The tests were carried out at variable flow velocities for three elbow diameters of 63, 75, and 90 mm. The flow rate, pressure difference in the tested cross-sections, and temperature of the fluids were measured and automatically recorded. The results of the measurements were used to develop mathematical models for determining the minor head loss coefficient as a function of elbow diameter, sand concentration in the liquid, and Reynolds number. The mathematical model was developed by cross validation. It was shown that when the concentration of sand in the liquid was increased by 1.0 g∙L-1, the coefficient of minor head loss through the elbows increased, in the Reynolds number range of 4.6∙104 − 2.1∙105, by 0.3−0.01% for PP63, 0.6−0.03 % for PP75, 1.1−0.06 % for PP90, 0.8−0.01 % for PVC63, 0.8−0.02 % for PVC75, and 0.9−0.04 % for PVC90. An increase in Re from 5∙104 to 2∙106 for elbows with diameters of 63, 75 and 90 mm caused a 7.3 %, 6.8 %, and 6.0 % decrease in the minor head loss coefficient, respectively.

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“…It is reported that high deviations in the values between simulated and experimental data of local solid concentration values are observed in the lower half of the cross-section just near the wall for coarser grain sizes. Gopaliya and Kaushal (2016) analysed the effects of particle size on various slurry flow parameters such as pressure drop, solid phase velocity distribution, friction factor, granular pressure, turbulent viscosity, turbulent kinetic energy and its dissipation. However, there is no study available in literature for modelling the flow of bi-modal or multi-sized particulate slurries through pipeline using three-dimensional CFD based Eulerian twophase model.…”

Section: Introductionmentioning

confidence: 99%

Flow of Bi-modal Slurry through Horizontal Bend

Kaushal

Kumar

Tomita

et al. 2017

KONA

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Extensive experimental investigations were carried out for pressure drop and concentration profile in the flow of bi-modal slurry comprising silica sand and fly ash with mean diameter of 450 and 75 μm, respectively, at six silica sand:flyash ratios (namely, 100:0, 90:10, 80:20, 70:30, 60:40 and 0:100) in a 53 mm diameter horizontal bend. Flow velocity was varied up to 3.56 m/s (namely, 1.78, 2.67 and 3.56 m/s) at two efflux concentrations of 8.82 % and 16.28 % for each silica sand:flyash ratio. The experimental data were compared with the CFD modelling results using an Eulerian two-phase model available in the FLUENT software. Eulerian model predicted almost all the experimental data collected in the present study for pressure drop and concentration profile with fair accuracy. The bend loss coefficient k t was found to decrease with increase in percentage of flyash for silica sand:flyash ratio up to 70:30. Further increase in flyash did not show any significant change in the value of k t .

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Modeling of sand-water slurry flow through horizontal pipe using CFD

Cited by 69 publications

References 34 publications

Predicting Sedimentation in Urban Sewer Conduits

Predicting Sedimentation in Urban Sewer Conduits

Effect of the Concentration of Sand in a Mixture of Water and Sand Flowing through PP and PVC Elbows on the Minor Head Loss Coefficient

Flow of Bi-modal Slurry through Horizontal Bend

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