NUMERICAL INVESTIGATIONS ON FLOW CHARACTERISTICS OF SAND-WATER SLURRY THROUGH HORIZONTAL PIPELINE USING COMPUTATIONAL FLUID DYNAMICS

Year 2020, Volume: 6 Issue: 2 - Issue Name: Special Issue 11: 10th Eureca Conference Taylor's University Malaysia, Subangiaya, Malaysia, 140 - 151, 30.03.2020

Shofique Uddin Ahmed

https://doi.org/10.18186/thermal.729205

Cited By: 2

Abstract

The study presents the numerical computational fluid dynamics (CFD) analysis of sand-water slurry flow with different sand particle sizes viz. 90µm, 125µm, 150µm, 200µm and 270µm having specific gravity of 2.65 through a 103 mm diameter, 5.5 m long horizontal pipeline for a high flow velocity of 5.4 m/s at various solid volumetric concentrations viz. 10%, 20%, 30%, 36% and 40%. Granular version of Eulerian two-phase model with dispersed particles along with RNG –epsilon approach has been utilized. Non-uniform structured mesh with a refinement near the wall boundary has been selected for discretizing the computational flow domain while Navier-Stokes governing equations are solved in FLUENT 14.0. The effects of the size of sand particles and solid volumetric concentrations on territorial concentration distributions, particle flow velocity and pressure drops have been studied and analyzed. Generalized mathematical correlation has been developed from the simulated results for calculating the consequences of the size of solid particles and solid volumetric concentration on pressure drop analytically. The simulated outcomes of pressure drop are validated with the experimental results. These outcomes will be very helpful in the setup of an experimental model for sand/water slurry flow pipelines in many industries viz. mining, construction, power generation etc.

Keywords

CFD Modeling, Eulerian Two-Phase Model, RNG K-Epsilon Model, Flow Velocity Distribution, Pressure Drop, Slurry Pipeline, Concentration Distribution

References

• [1] O’Brien, M.P. Review of the theory of turbulent flow and its relations to sediment transport, Transaction of the American Geophysical Union 1933;14, 487–491.
• [2] Rouse, H. Modern conceptions of the mechanics of fluid turbulence, Transactions of ASCE, 1937; 102, 463–505.
• [3] Shook, C. A., Daniel, S. M. Flow of suspensions of solids in pipelines: Part I, Flow with a stable stationary deposit, The Canadian Journal of Chemical Engineering, 1965; 43(2), 56-61.
• [4] Wasp, E. J., Aude, T. C.: Deposition velocities, transition velocities, and spatial distribution of solids in slurry pipelines, In Presented at the 1st International British Hydromechanics Research Association Hydraulic Transport of Solids in Pipes Conference, War Wickshire Univ, Conventry, England,1970, Sept. 1-4. (No. H4 Proceeding).
• [5] Turian, R. M., Yuan, T. F. Flow of slurries in pipelines. AIChE Journal, 1977; 23(3), 232-243.
• [6] Seshadri, V., Malhotra, R.C., Sundar, K.S. Concentration and size distribution of solids in a slurry pipeline, in: Proc. 11th Nat. Conference on Fluid mechanics and fluid power, B.H.E.L., Hyderabad; 1982.
• [7] Roco, M. C., Shook, C. A. Modeling of slurry flow: the effect of particle size. The Canadian Journal of Chemical Engineering, 1983; 61(4), 494-503.
• [8] Roco, M. C., Shook, C. A. Computational method for coal slurry pipelines with heterogeneous size distribution, Powder Technology, 1984; 39(2), 159-176.
• [9] Doron, P., Granica, D., Barnea, D. Slurry flow in horizontal pipes—experimental and modelling, International Journal of Multiphase Flow, 1987; 13(4), 535-547.
• [10] Gillies, R.G., Shook, C.A., Wilson, K.C. An improved two layer model for horizontal slurry pipeline flow, The Canadian Journal of Chemical Engineering, 1991; 69, 173–178.
• [11] Gillies, R. G., Shook, C. A., Xu, J. Modelling heterogeneous slurry flows at high velocities, The Canadian Journal of Chemical Engineering, 2004; 82(5), 1060-1065.
• [12] Gillies, R. G., Hill, K. B., Mckibben, M. J., Shook, C. A. Solids transport by laminar Newtonian-flows. Powder Technology, 104(3), 1999; 269-277.
• [13] Gillies, R. G., Shook, C. A. Modelling high concentration settling slurry flows, The Canadian journal of chemical Engineering, 78(4), 2000; 709-716.
• [14] Kaushal, D. R., Seshadri, V., Singh, S. N. Prediction of concentration and particle size distribution in the flow of multi-sized particulate slurry through rectangular duct, Applied Mathematical Modeling, 2002; 26(10), 941-952.
• [15] Gillies, R. G., Shook, C. A., Xu, J. Modelling heterogeneous slurry flows at high velocities, The Canadian Journal of Chemical Engineering, 2004; 82(5), 1060-1065.
• [16] Kaushal, D. R., Sato, K., Toyota, T., Funatsu, K., Tomita, Y.Effect of particle size distribution on pressure drop and concentration profile in pipeline flow of highly concentrated slurry, International Journal of Multiphase Flow, 2005; 31(7), 809-823.
• [17] Monteiro, A. C., Bansal, P. K. Pressure drop characteristics and rheological modeling of ice slurry flow in pipes, International journal of refrigeration, 2010; 33(8), 1523-1532.
• [18] Lahiri, S.K., Ghanta, K.C. Slurry flow modelling by CFD, Chemical Industry & Chemical Engineering Quarterly, 2010; 16 (4) 295-308.
• [19] Kaushal, D. R., Thinglas, T., Tomita, Y., Kuchii, S., Tsukamoto, H. CFD modeling for pipeline flow of fine particles at high concentration, International Journal of Multiphase Flow, 2012; 43, 85-100.
• [20] Messa, G. V., Malavasi, S. Improvements in the numerical prediction of fully-suspended slurry flow in horizontal pipes, Powder Technology, 2015; 270, 358-367.
• [21] Nabil, T., El-Sawaf, I., El-Nahhas, K. Sand-water slurry flow modelling in a horizontal pipeline by computational fluid dynamics technique, International Water Technology Journal, 2014; 4(1), 13.
• [22] Swamy, M., Díez, N. G., Twerda, A. Numerical modelling of the slurry flow in pipelines and prediction of flow regimes, Computational Methods in Multiphase Flow, 2015; 8(89), 311.
• [23] Gopaliya, M. K., Kaushal, D. R. Modeling of sand-water slurry flow through horizontal pipe using CFD, Journal of Hydrology and Hydromechanics, 2016; 64(3), 261-272.
• [24] Kumar, N., Gopaliya, M. K., Kaushal, D. R. Experimental investigations and CFD modeling for flow of highly concentrated iron ore slurry through horizontal pipeline. Particulate Science and Technology, 2018; 1-19.
• [25] Wang, J., Wang, S., Zhang, T. and Battaglia, F. Matheatical and experimental investigation on pressure drop of heterogeneous ice slurry flow in horizontal pipes, International Journal of Heat and Mass Transfer, 2017; 108, 2381-2392.
• [26] Onokoko, L., Poirier, M., Galanis, N., Poncet, S. Experimental and numerical investigation of isothermal ice slurry flow, International Journal of Thermal Sciences, 2018; 126, 82-95.