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

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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



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