A lattice chain model for the thermal restructuring of nanoparticle chain aggregates

Dalis, Adamos; Friedlander, Sheldon K.

doi:10.1016/j.jaerosci.2004.07.011

Cited by 11 publications

(5 citation statements)

References 25 publications

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“…(Other algorithms such as ballistic or particle-cluster models, predict structures with higher fractal dimension.) This value is in fair agreement with experimental observation (Dalis & Friedlander, 2005).…”

Section: Flow Configurationsupporting

confidence: 93%

Modeling and simulation of titania formation and growth in temporal mixing layers

Wang

Garrick

2006

Journal of Aerosol Science

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Section: Flow Configurationsupporting

confidence: 93%

Modeling and simulation of titania formation and growth in temporal mixing layers

Wang

Garrick

2006

Journal of Aerosol Science

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“…As a result, the relaxation time can be deduced. So, in the case of thermal restructuring, Dalis [16] shows that the relaxation time depends on the temperature, the size and the number of primary particles in the aggregate:…”

Section: Simulationsmentioning

confidence: 99%

Modelling of aggregate restructuring in a weakly turbulent flow

Gruy

2012

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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To cite this version:Frédéric Gruy.Modelling of aggregate restructuring in a weakly turbulent flow. AbstractAn aggregate may undergo a restructuring that leads to a change of its porosity. The cause of this morphology change is not only the colloidal forces between the primary particles but also the interaction between the primary particles and the flowing fluid. We investigate in this paper the restructuring of the aggregates with Van der Waals forces between the primary particles in the presence of the Brownian motion and a weakly turbulent flow. The motion of all the primary particles constituting the aggregate is studied thanks to a 1-D model based on the work of G. Narsimhan [Model for drop coalescence in a locally isotropic turbulent flow field, J. of Colloid & Interface Science, 272(2004)197-209]. A shrinking rate law, i.e. aggregate porosity versus time, is proposed after a transition to a 3-D model. Its characteristic time depends on the initial porosity, the number of primary particle and a characteristic time at the scale of the primary particle.

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“…92 Taking place at the points of contact between primary particles, it was at the origin of the shrinking of fractal aggregates as a transition from chain like to lumped aggregates. Numerical simulations of this effect were given by Dalis and Friedlander 93 and di Stasio and Iazzetta. 94 The picture of the elementary particle structure apparently more consistent with our results (more amorphous core, locally more ordered outer shell) can be compared to di Stasio's interpretation of TEM images, offered in his 2001 paper.…”

Section: Articlementioning

confidence: 99%

Carbonaceous Nanoparticle Molecular Inception from Radical Addition and van der Waals Coagulation of Polycyclic Aromatic Hydrocarbon-Based Systems. A Theoretical Study

2011

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A lattice chain model for the thermal restructuring of nanoparticle chain aggregates

Cited by 11 publications

References 25 publications

Modeling and simulation of titania formation and growth in temporal mixing layers

Modeling and simulation of titania formation and growth in temporal mixing layers

Modelling of aggregate restructuring in a weakly turbulent flow

Carbonaceous Nanoparticle Molecular Inception from Radical Addition and van der Waals Coagulation of Polycyclic Aromatic Hydrocarbon-Based Systems. A Theoretical Study

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