THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Ke Sun

,

Lin Lu

,

Hai Jiang

EXPERIMENTAL STUDY OF AEROSOL DISTRIBUTION AND CONCENTRATION VARIATION THROUGH CURVED DUCTS

ABSTRACT
This paper presents an experimental investigation of an aerosol problem by adopting two methods. One approach utilizes scanning electron microscope to study the realistic aerosol deposition status in a typical duct bend. Through scanning electron microscope images and on-site observation, the aerosols tend to deposit and accumulate more on the outer bend wall and bend outlet wall. The other approach is to design systematic experiments to measure aerosol concentration variation and distribution through 90-degree curved ducts. This experimental method is simple for realistic applications. Measured results show that the average particle volume concentration diverges greatly after flowing through the bend. The loading ability decreases significantly for larger particles at bend outlet under higher Dean number.
KEYWORDS
scanning electron microscope, concentration change, deposition, bends
PAPER SUBMITTED: 2012-08-01
PAPER REVISED: 2012-09-06
PAPER ACCEPTED: 2012-09-13
DOI REFERENCE: https://doi.org/10.2298/TSCI1205437S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2012, VOLUME 16, ISSUE Issue 5, PAGES [1437 - 1441]
REFERENCES
  1. Yu, M. Z., Lin, J. Z., Chan, T., Numerical Simulation of Nanoparticle Synthesis in Diffusion Flame Reactor, Powder Technology, 181 (2008), 1, pp. 9-20
  2. Jiang, H., Lu, L., Sun, K., Experimental Study and Numerical Investigation of Particle Penetration and Deposition in 90 Degrees Bent Ventilation Ducts, Build Environ. 46 (2011), 11, pp. 2195-202
  3. Sun, K., Lu, L., Jiang, H., A Numerical Study of Bend-Induced Particle Deposition in and Behind Duct Bends, Build Environ., 52 (2012), 1, pp. 77-87
  4. Lin, J. Z., Shi, X., You, Z. J., Effects of the Aspect Ratio on the Sedimentation of a Fiber in Newtonian Fluids, Journal of Aerosol Science, 34 (2003), 7, pp. 909-921
  5. Yu, M. Z., Lin, J. Z., Nanoparticle-Laden Flows via Moment Method: A review, International Journal of Multiphase Flow, 36 (2010), 2, pp. 144-51
  6. Sun, K., et al., Experimental Study of Solid Particle Deposition in 90° Ventilated Bends of Rectangular Cross Section with Turbulent Flow, Aerosol Science and Technology, 47 (2013), 2, pp. 115-124
  7. Song, X. Q., et al., Research on Reducing Erosion by Adding Ribs on the Wall in Particulate Two-phase Flows, Wear, 193 (1996), 1, pp. 1-7
PDF VERSION [DOWNLOAD]
Experimental study of aerosol distribution and concentration variation through curved ducts

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence