Experimental investigation of single particle settling in turbulence generated by oscillating grid

Chemical Engineering Journal

Volumn 149, Issue 1-3, 2009, Pages 289-300

  Zhou, Qi ^a   Cheng, Nian Sheng ^a  

^a NANYANG TECHNOLOGICAL UNIVERSITY   (Singapore)

Author keywords

Drag coefficient; Oscillating grid; PIV; Settling velocity; Turbulence

Indexed keywords

DRAG; DRAG COEFFICIENT; VELOCITY; VELOCITY MEASUREMENT;

AMBIENT FLUIDS; ANALYTICAL MODELS; AQUATIC ENVIRONMENTS; EXPERIMENTAL DATUM; EXPERIMENTAL INVESTIGATIONS; FLUID ZONES; LENGTH-SCALE; MEAN VERTICAL VELOCITIES; OSCILLATING GRID; PARTICLE DIAMETERS; PIV; RICHARDSON NUMBERS; SETTLING BEHAVIORS; SETTLING PARTICLES; SETTLING VELOCITY; SINGLE PARTICLES; SOLID PARTICLES; STILL WATERS; STOKES NUMBERS; TERMINAL VELOCITIES; TURBULENCE EFFECTS; TURBULENCE INFLUENCES; TURBULENCE INTENSITIES;

TURBULENCE;

EID: 63149100914     PISSN: 13858947     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.cej.2008.11.004     Document Type: Article

References (21)

1. Magelli F., Fajner D., Nocentini M., and Pasquali G. Solid distribution in vessels stirred with multiple impellers. Chem. Eng. Sci. 45 3 (1990) 615-625
2. Brucato A., Grisafi F., and Montante G. Particle drag coefficients in turbulent fluids. Chem. Eng. Sci. 53 18 (1998) 3295-3314
3. Ruiz J., Macias D., and Peters F. Turbulence increases the average settling velocity of phytoplankton cells. PNAS 101 51 (2004) 17720-17724
4. Cuthbertson A.J.S., and Ervine D.A. Experimental study of fine sand particle settling in turbulent open channel flows over rough porous beds. J. Hydraul. Eng. 133 8 (2007) 905-916
5. Kawanisi K., and Shiozaki R. Turbulent effects on the settling velocity of suspended sediment. J. Hydraul. Eng. 134 2 (2008) 261-266
6. Yang C.Y., and Lei U. The role of the turbulent scales in the settling velocity of heavy particles in homogeneous isotropic turbulence. J. Fluid Mech. 371 (1998) 179-205
7. Aliseda A., Cartellier A., Hainaux F., and Lasheras J.C. Effect of preferential concentration on the settling velocity of heavy particles in homogeneous isotropic turbulence. J. Fluid Mech. 468 (2002) 77-105
8. Friedman P.D., and Katz J. Mean rise rate of droplets in isotropic turbulence. Phys. Fluids 14 9 (2002) 3059-3073
9. Doroodchi E., Evans G.M., Schwarz M.P., Lane G.L., Shah N., and Nguyen A. Influence of turbulence intensity on particle drag coefficients. Chem. Eng. J. 135 1-2 (2008) 129-134
10. Zhou Q., and Cheng N.S. Particle settling behavior in turbulent flow generated by oscillating grid. In: Zhuang F.G., and Li J.C. (Eds). New Trends in Fluid Mechanics Research-Proceedings of the Fifth International Conference on Fluid Mechanics (2007) p142-145
11. Yang T.S., and Shy S.S. The settling velocity of heavy particles in an aqueous near-isotropic turbulence. Phys. Fluids 15 4 (2003) 868-880
12. Wang L.P., and Maxey M.R. Settling velocity and concentration distribution of heavy-particles in homogeneous isotropic turbulence. J. Fluid Mech. 256 (1993) 27-68
13. Mei R. Effect of turbulence on the particle settling velocity in the nonlinear drag range. Int. J. Multiphase Flow 20 2 (1994) 273-284
14. Nielsen P. Coastal Bottom Boundary Layers and Sediment Transport (1992), World Scientific
15. Bagchi P., and Balachandar S. Effect of turbulence on the drag and lift of a particle. Phys. Fluids 15 11 (2003) 3496-3513
16. Cheng N.S., and Law A.W.K. Measurements of turbulence generated by oscillating grid. J. Hydraul. Eng. 127 3 (2001) 201-208
17. Hopfinger E.J., and Toly T.A. Spatially decaying turbulence and its relation to mixing across density interfaces. J. Fluid Mech. Part 1 (1976) 155-175
18. Matsunaga N., Sugihara Y., Komatsu T., and Masuda A. Quantitative properties of oscillating-grid turbulence in a homogeneous fluid. Fluid Dyn. Res. 25 3 (1999) 147-165
19. Yan J., Cheng N.S., Tang H.W., and Tan S.K. Oscillating-grid turbulence and its applications: a review. J. Hydraul. Res. 45 1 (2007) 26-32
20. Cheng N.S. Comparison of formulas for drag coefficient and settling velocity of spherical particles. Powder Technol. 189 3 (2009) 395-398
21. Davila J., and Hunt J.C.R. Settling of small particles near vortices and in turbulence. J. Fluid Mech. 440 (2001) 117-145