Technical Report 80, c4e-Preprint Series, Cambridge

On the fractal dimension of soot particles

Reference: Technical Report 80, c4e-Preprint Series, Cambridge, 2009

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The aim of this work is to explore possible alternative explanations for the remarkably low fractal dimensions reported for soot particles by Chakrabarty et al. [Phys. Rev. Lett., 102(23):235504, 2009]. A stochastic population balance model has been developed and applied to simulate the formation of soot particles in a premixed laminar sooting flame. The model involves inception, coagulation, surface growth and condensation processes. The fractal dimension has been calculated using a double logarithmic plot of the number of primary particles against the radius of gyration and √(LW) where L is the length and W the width of the projected particle. The limits of this technique are discussed by comparing fractal dimensions calculated for simulated particles.

Material from this preprint has been published in Physical Review Letters.


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