Abstract




 
   

IJE TRANSACTIONS B: Applications Vol. 15, No. 3 (October 2002) 299-310   

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  DEPOSITION OF VARIOUS SHAPES PARTICLES ON A ROUGH SURFACE IN TURBULENT FLOW
 
 
M. Shams

CAE Center, Thermal Mechanics Laboratory, Iran University of Science and Technology
Tehran, Iran mehrzad_shams@yahoo.com

H. Rahimzadeh

Department of Mechanical Engineering, Amirkabir University of Technology
Tehran, Iran, rahimzad@yahoo.com

G. Ahmadi

Department of Mechanical and Aeronautical Engineering, Clarkson University
Potsdam, NY 13699, USA, ahmadi@clarkson

 
 
( Received: November 16, 2000 – Accepted in Revised Form: April 09, 2002 )
 
 

Abstract    An experiment set-up is used to study wall deposition rate of particles on a rough surface in a turbulent channel flow. Deposition velocities for three classes of particles, namely, spherical glass particles, irregular shape polymer particles, and fibrous silicon particles are studied. The particle concentration at the test section was measured with the aid of an isokinetic probe in conjunction with a digital image processing technique. The probe is made of sterile plastic and sticked to the sidewall of the wind tunnel. The deposition of spherical particles is found to increase with increasing in diameter. Also it is shown that the deposition velocity of spherical particles is affected by the surface roughness.

 

Keywords    Experimental Two Phase Fluid Flow, Rough or Smooth Surface Aerosol Flow, Turbulent Aerosol Flow

 

References   

1. Cooper, D. W., "Particle Contamination aad Microelectronics Manufacturing: An Introduction", Aerosol Sci Technol., Vol. 5, (1986), 983-992.
2. Fuchs, N. A., "The Mechanics of Aerosol", Pergoman Press, London, (1964).
3. Friedlander, S. K., "Smokes, Dust, and Haze", John Wiley, New York, (1977).
4. Hinds, W. C., "Aerosol Technology, Properties Behavior, and Measurement of Airborne Particles", John Wiley and Sons, New York, (1982).
5. The Turbulent Case. J. Aerosol Sci., Vol. 19, (1982), 197-211.
6. Hedley, G. M., "Aerosol, an Industrial and Environmental Science", Academic Press, New York, (1984).
7. Vincent, J. H., "Aerosol Science for Industrial Hygienists", Pergoman, Oxford, (1996).
8. Wells, M. R. and Chamberlain, A. C., "Deposition of Dusts from Turbulent Gas Streams" Atm Environment, Vol. 3, (1969), 494-496.
9. Namie, S. And Ueda, T., "Droplet Transfer in Two-Phase Annular Mist Flow. Part I: Experiment of Droplet Transfer Rate and Distribution of Droplet Concentration and Velocity", Bull. JSME, Vol. 15, (1972), 1568-1580.
10. McCoy, D. D. and Hanratty, T. J., "Rate of Deposition of Droplets in Annular Two Phase Flow" Int. J. Multiphase Flows, Vol. 3, (1977), 275-295.
11. Montgomery, T. L., "Aerosol Deposition in a Pipe with Turbulent Air Flow", D.Sc. Dissertation, University of Pittsburgh, (1969).
12. Kvasnak, W., Ahmadi, G., Bayer, R. and Gaynes, M., "Experimental Investigation of Dust Particle Deposition in a Turbulent Channel Flow", J. Aerosol Sci., Vol. 25, (1993), 795-815.
13. Griffiths, W. D. and Vaughan, N. P., "The Aerodynamic Behavior of Cylindrical and Spheroidal Particles When Settling Under Gravity", J. Aersol Sci., Vol. 17, (1986), 53-65.
14. Shapiro, M. and Goldenberg, M., "Deposition of Glass Fiber Particles from Turbulent Flow in Pipe", J. Aersol Sci., Vol. 24, (1993), 53-65.
15. Kvasnak, W. and Ahmadi, G., "Fibrous Particle Deposition in a Turbulent Channel: An Experimental Study", Aerosol Sci. and Tech., Vol. 23, (1995), 641-652.
16. Gayne, J. C., "Experimental Investigation of Particle Deposition and Effect of Rebound in a Turbulent Channel Flow", M.Sc. Dissertation, Clarkson University, (1998).
17. Lipatov, G. N., Grinspun, S. A., Shingaryov, G. L. and Sutugin, A. G., "Aspiration of Coarse Aerosol by a Thin-Walled Sampler", J. Aerosol Sci., Vol. 17, (1986), 763-769.
18. Rosner, D. and Tassopoulos, M., "Correction for Sampling Errors Due to Coagulation and Wall Loss in Laminar and Turbulent Tube Flow: Direct Solution of Canonical 'Invers' Problem for Log-Normal Size Distribution", J. Aerosol Sci., V. 22, (1991), 843-867.
19. Fan, B. J., Wong, F. S., McFarland, A. R. and Anand, N. K.., "Aerosol Deposition in Sampling Probe", Aerosol Sci. Tech., V. 17, (1992), 326-332.
20. Wood, N. B., "The Mass Transfer of Particles and Acid Vapor to Copied Surfaces", J. Inst. Energy, Vol. 76, (1981), 76-93.
21. Fan, F. G., and Ahmadi, G., "A Sublayer Model for Turbulent Deposition of Particles in Vertical Ducts With Smooth And Rough Surfaces," J. Aerosol ScL, Vol. 24, (1993), 45-64.
22. Shams, M., Ahmadi, G. and Rahimzadeh, H., "Dispersion and Deposition of Flexible FibersinTurbulent Duct Flows", J. Aerosol Sci., to be published.
23. Papavergos, P. G. and Hedley, A. B., "Particle Deposition Behavior From Turbulent Flows, "Chem.Eng.Des., Vol. 62, (1984), 275-295.
24. Sehmel, G. A., "Particle Eddy Difmsivity and Deposition Velocities for Isothermal Flow and Smooth Surfaces," J. Aerosol Sci., Vol. 4, (1973), 125-138.
25. Sun, Y. F. and Lin, S. P., "Aerosol Concentration in a Turbulent Flow" J. Colloid and Interface Sci., Vol. 113, (1986), 315-320.
26. Rosner, D. and Tassopoullos, M., "Correction for Sampling Errors Due to Coagulation and Wall Loss in Laminar and Turbulent Tube Flow: Direct Solution of Canonical 'Inverse' Problem for Log-Normal Size Distribution" J. Aerosol Sci., Vol. 22, (1986), 843-867.
27. VOYAGER, Technical Manual, Clarkson University.
28. JSM-6300, Technical Manual, Clarkson University.
29. Fan, F. G., "A Sublaryer Model for Wall Depositions of Ellipsoidal Particles in Turbulent Streams", J. Aerosol defence. Vol. 26, (1995), 813-840.
30. Soltani, M. and Ahmadi, G., "Direct Numerical Simulation of Particle Entertainments in Turbulent Channel Flow", Phys. Fluids, Vol. 7. (1995), 647-657.
31. Hangal, S. and Klaus, W., "Overall Efficiency of Tubular, Inlets Sampling at 0-90 Degrees from Horizontal Aerosol Flows", Atoms. Env., Vol. 24A, (1990), 2379-2386.
32. Stavropoulos, N., Columbia University, MSc Thesis, New York,(1957).





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