International Scientific Journal


Fluent simulates the water-sand flow around a cylinder. Monitoring lines are set up at different positions in the cylindrical surface and the very near wake area behind the cylinder, in order to explore the speed difference of fluid and sand in the water-sand two-phase flow in the boundary-layer and the very near wake area. The results show that the sand particles stay for the longest time on the back of the cylindrical surface and in the very near wake area, and a small part of the sand particles are sticky on the back of the cylindrical pier. When the height of the cylinder is z/D ∈ (1.57, 3.14), the turbulent flow on the cylindrical surface is fully developed. The dynamic pressure of the flow field in the very near wake area be-hind the cylinder fluctuates greatly, and the water-sand flow is extremely unstable. At the monitoring position of the cylinder, there is a sudden decrease in the velocity of the fluid, while the velocity of the sand particles changes little and remains finally at about -0.02 m/s. The water-sand flow field near the wall changes drastically, but the velocity change of sand particles has obvious hysteresis compared with fluid. When leaving the near-wall position but still in the cylindrical wake area (x/D ≤ 3), the changes in the water-sand flow field are more intense and the velocity of the sand particles is still slightly larger than the fluid velocity.
PAPER REVISED: 2021-07-10
PAPER ACCEPTED: 2021-07-13
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THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 6, PAGES [4217 - 4224]
  1. Righetti, M., Romano, G. P., Particle-Fluid Interactions in a Plane Near-Wall Turbulent Flow, Journal of Fluid Mechanics, 505 (2004), Apr., pp. 93-121
  2. Ni, J. R., Huang, X. J. Some Aspects of Hyper-Concentrated Sediment-Laden Flows (in Chinese), Journal of Hydraulic Engineering, 7 (2002), pp. 8-15
  3. Gore, R. A., Crowe, C. T., Effect of Particle Size on Modulating Turbulent Intensity. International Journal of Multiphase Flow, 15 (1989), 2, pp. 279-285
  4. Zhao, H. L., et al., Experimental study of coherent structures in a solid-liquid turbulent boundary-layer (in Chinese), Journal of Experiments in Fluid Mechanics, 31 (2017), 6, pp. 29-36
  5. Lei, J. M., Tan, Z. M., Numerical Simulation for Flow Around Circular Cylinder at high Reynolds Number based on Transition SST Model (in Chinese), Journal of Beijing University of Aeronautics and Astro-nautics, 43 (2017), 2, pp. 207-217
  6. Cui, W. Z., et al., Three-Dimensional Numerical Simulation of Flow Around Combined Pier based on Detached Eddy Simulation at High Reynolds Numbers, International Journal of Heat and Technology, 35 (2017), 1, pp. 91-96
  7. Zhang, H., et al., Large-Eddy Simulation of the Flow Past Both Finite and Infinite Circular Cylinders at Re = 3900, Journal of Hydrodynamics, 27 (2015), 2, pp. 195-203
  8. Duan, M. Y., Wan, D. C., Large Eddy Simulation of Flow Around the Cylinders with Different Aspects (in Chinese), Chinese Journal of Hydrodynamics, 31 (2016), 3, pp. 295-302
  9. Huang, Y. D., Wu, W. Q., Numerical Study of Particle Distribution in the Wake of Liquid-Particle Flows Past a Circular Cylinder Using Discrete Vortex Method (in Chinese), Applied Mathematics and Me-chanics, 27 (2006), 4, pp. 477-483
  10. Qiao, Z. W., et al., Effect of Roughness on the Force and Erosion of Cylindrical Structures Under Wa-ter-Sand Two Phase Flow (in Chinese), Journal of Shangdong University of Science and Technology (Natural Science), 40 (2021), 3, pp. 44-49
  11. Liu, X. B., Cheng, L. J., A Numerical Simulation of the Motion of Solid Particles in Turbulent Bounda-ry-Layers (in Chinese), Shanghai Journal of Mechanics, 17 (1996), 1, pp. 54-60
  12. Chen, M. Z., Fundamentals of Viscous Fluid Dynamics, Higher Education Press, Beijing, China, 1993
  13. Menter, F. R., Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications, Aiaa Journal, 32 (1994), 8, pp. 1558-1605
  14. Shen, Y.-B., et al., Effect of Roughness on the Flow of Parallel Double Cylinder Cylindrical Under Different Spacing Ratios (in Chinese), Water Resources and Hydropower Engineering, 50 (2019), 07, pp. 131-136
  15. Moin, P., Verzicco, R., On the Suitability of Second-Order Accurate Discretizations for Turbulent Flow Simulations, European Journal of Mechanics / B Fluids, 55 (2016), Part 2, pp. 242-245
  16. Qiao, Y. L., et al., Analysis of Three-Dimensional Numerical Simulation Methods for Turbulent Flow Past Circular Cylinder (in Chinese), Hydro-Science and Engineering, (2016), 3, pp. 119-125
  17. Cui, W. Z., et al., Study on Influence Factors of Flow Around Twin Tandem-Circular Cylinders Under High Reynolds Number (in Chinese), Water Resources and Hydropower Engineering, 49 (2018), 2, pp. 92-98
  18. Zhang, X. T., et al., Study of Correlation Between Lift and Drag Forces with Wave Attacking Height of Cross-Sea Bridge Based on FLUENT (in Chinese), Journal of Shangdong University of Science and Technology (Natural Science), 32 (2013), 4, pp. 57-61
  19. Yu, W. C., Yue, H. Y., Position of Runoff and Sediment of Yangtze River in World Rivers (in Chinese), Journal of Yangtze River Scientific Research Institute, 19 (2002), 6, pp. 13-16
  20. Xia, M., Karniadakis, G., Dynamics and Low-Dimensionality of a Turbulent Near Wake, J. Fluid Mech., 410 (2000), May, pp. 29-65
  21. Ji, L. Y., Study on the Collision Rule and Erosion Characteristic of Solid-Liquid Two-Phase Flow with Large Particle Diameter, Ph. D. thesis, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China, 2017

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