The radiative properties of numerically generated fractal soot aggregates were studied using the numerically accurate generalized multi-sphere Mie-solution method. The fractal aggregates investigated in this study contain from 10 to 600 primary particles of 30 nm in diameter. These fractal aggregates were numerically generated using a combination of the particle-cluster and cluster-cluster aggregation algorithms with fractal parameters representing flame generated soot. Ten different realizations were obtained for a given aggregate size measured by the number of primary particles. The wavelength considered is 532 nm and the corresponding size parameter of primary particle is 0.177. Attention is paid to the effect of different realizations of a fractal aggregate with identical fractal dimension, prefactor, primary particle diameter, and the number of primary particles on its orientation-averaged radiative properties. Most properties of practical interest exhibit relatively small variation with aggregate realization. However, other scattering properties, especially the vertical-horizontal differential scattering cross section, are very sensitive to the variation in geometrical configuration of primary particles. Orientation-averaged radiative properties of a single aggregate realization are not always sufficient to represent the properties of random-oriented ensemble of fractal aggregates.
Skip Nav Destination
ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences
July 19–23, 2009
San Francisco, California, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4356-7
PROCEEDINGS PAPER
Radiative Properties of Numerically Generated Fractal Soot Aggregates: The Importance of Configuration Averaging Available to Purchase
Fengshan Liu,
Fengshan Liu
ICPET, National Research Council of Canada, Ottawa, ON, Canada
Search for other works by this author on:
Gregory J. Smallwood
Gregory J. Smallwood
ICPET, National Research Council of Canada, Ottawa, ON, Canada
Search for other works by this author on:
Fengshan Liu
ICPET, National Research Council of Canada, Ottawa, ON, Canada
Gregory J. Smallwood
ICPET, National Research Council of Canada, Ottawa, ON, Canada
Paper No:
HT2009-88224, pp. 207-214; 8 pages
Published Online:
March 12, 2010
Citation
Liu, F, & Smallwood, GJ. "Radiative Properties of Numerically Generated Fractal Soot Aggregates: The Importance of Configuration Averaging." Proceedings of the ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment. San Francisco, California, USA. July 19–23, 2009. pp. 207-214. ASME. https://doi.org/10.1115/HT2009-88224
Download citation file:
8
Views
Related Proceedings Papers
Related Articles
Computational Evaluation of Approximate Rayleigh–Debye–Gans/Fractal-Aggregate Theory for the Absorption and Scattering Properties of Soot
J. Heat Transfer (February,1995)
Radiative Properties of Numerically Generated Fractal Soot Aggregates: The Importance of Configuration Averaging
J. Heat Transfer (February,2010)
Optical Properties of Soot in Buoyant Laminar Diffusion Flames
J. Heat Transfer (November,1994)
Related Chapters
Scattering of Out-Plane Line Source Load by a Shallow-Embedded Circular Lining Structure and the Ground Motion
Geological Engineering: Proceedings of the 1 st International Conference (ICGE 2007)
Study on Load Position Switching of Radial Scattering Dispenser
International Conference on Mechanical Engineering and Technology (ICMET-London 2011)
Short-Pulse Collimated Radiation in a Participating Medium Bounded by Diffusely Reflecting Boundaries
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3