Evolution of the fractal dimension for simultaneous coagulation and sintering

Coagulation Coefficient of Agglomerates with Different Fractal Dimensions

“…Pairwise sintering of primary particles is assumed, even though it is not a natural occurrence (Kulkarni and Biswas 2003). In previous simulations, the structure of agglomerates during sintering was well presented with the MC simulations (Schmid et al 2004(Schmid et al , 2006Al Zaitone et al 2009). Nevertheless, pairwise sintering was used here because it reduced the computation time, and we believe it did not have much effect on the overall fractal dimension of the agglomerate.…”

“…The fractal dimension can vary with respect to the ratio of the collision and sintering characteristic times (Artelt et al 2003). The relationship between the fractal dimension of agglomerates and the characteristic times of collision, sintering, and surface growth has been obtained by performing Monte Carlo (MC) simulations (Schmid et al 2004(Schmid et al , 2006Al Zaitone et al 2009). However, these MC simulations assumed two things: a steady-state condition and monodispersed agglomerates.…”

Polydispersity of primary particles in agglomerates made by coagulation and sintering

“…A more detailed sintering model would describe the individual change in PP diameter as function of the number of contact points and sizes of adjacent primaries (Yadha & Helble, 2004or Schmid, Al-Zaitone, Artelt, & Peukert, 2006. In this case, Eq.…”

Effect of sintering on the reactivity of copper-based oxygen carriers synthesized by impregnation

“…For deducing the mathematical form of the aggregation frequency, a similar procedure to that made by Schmid [23] in the simulation of aerosol coagulation was followed.…”