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Smoluchowski's coagulation equations can be used as elementary mathematical models for the formation of polymers. We review here some recent contributions on a variation of this model in which the number of aggregations for each atom is a…

Probability · Mathematics 2012-02-24 Jean Bertoin

We consider in this work a model for aggregation, where the coalescing particles initially have a certain number of potential links (called arms) which are used to perform coagulations. There are two types of arms, male and female, and two…

Mathematical Physics · Physics 2009-11-09 Raoul Normand

We study multicomponent coagulation via the Smoluchowski coagulation equation under non-equilibrium stationary conditions induced by a source of small clusters. The coagulation kernel can be very general, merely satisfying certain power law…

Analysis of PDEs · Mathematics 2021-03-25 Marina A. Ferreira , Jani Lukkarinen , Alessia Nota , Juan J. L. Velázquez

In this article we study an extension of Smoluchowski's discrete coagulation equation, where particle in- and output takes place. This model is frequently used to describe aggregation processes in combination with sedimentation of clusters.…

Mathematical Physics · Physics 2018-01-10 Christian Kuehn , Sebastian Throm

The Smoluchowski equation is a system of partial differential equations modelling the diffusion and binary coagulation of a large collection of tiny particles. The mass parameter may be indexed either by positive integers, or by positive…

Probability · Mathematics 2008-12-01 Mohammad Reza Yaghouti , Fraydoun Rezakhanlou , Alan Hammond

This article is devoted to a generalized version of Smoluchowski's coagulation equation. This model describes the time evolution of a system of aggregating particles under the effect of external input and output particles. We show that for…

Analysis of PDEs · Mathematics 2023-06-16 Prasanta Kumar Barik , Asha K. Dond , Rakesh Kumar

In the present article we introduce a variant of Smoluchowski's coagulation equation with both position and velocity variables taking a kinetic viewpoint arising as the scaling limit of a system of second-order (microscopic) coagulating…

Analysis of PDEs · Mathematics 2022-11-15 Franco Flandoli , Ruojun Huang , Andrea Papini

We analyze the dynamics of concentrated polymer solutions modeled by a 2D Smoluchowski equation. We describe the long time behavior of the polymer suspensions in a fluid. When the flow influence is neglected the equation has a gradient…

Analysis of PDEs · Mathematics 2025-09-17 Xingyu Li , Arghir Zarnescu

Binary coagulation is an important process in aerosol dynamics by which two particles merge to form a larger one. The distribution of particle sizes over time may be described by the so-called Smoluchowski's coagulation equation. This…

Mathematical Physics · Physics 2021-06-25 Marina A. Ferreira

In order to study linker-mediated aggregation of colloidal particles with limited valence, we combine kinetic Monte Carlo simulations and an approximate theory based on the Smoluchowski equations. We found that aggregation depends strongly…

Soft Condensed Matter · Physics 2020-07-15 J. M. Tavares , G. C. Antunes , C. S. Dias , M. M. Telo da Gama , N. A. M. Araújo

The Smoluchowski coagulation-diffusion PDE is a system of partial differential equations modelling the evolution in time of mass-bearing Brownian particles which are subject to short-range pairwise coagulation. This survey presents a fairly…

Probability · Mathematics 2019-02-14 Alan Hammond

We prove well-posedness of global solutions for a class of coagulation equations which exhibit the gelation phase transition. To this end, we solve an associated partial differential equation involving the generating functions before and…

Classical Analysis and ODEs · Mathematics 2015-05-18 Raoul Normand , Lorenzo Zambotti

Sufficient conditions are given for existence and uniqueness in Smoluchowski's coagulation equation, for a wide class of coagulation kernels and initial mass distributions. An example of non-uniqueness is constructed. The stochastic…

Probability · Mathematics 2007-05-23 James R. Norris

Existence and non-existence of integrable stationary solutions to Smoluchowski's coagulation equation with source are investigated when the source term is integrable with an arbitrary support in (0, $\infty$). Besides algebraic upper and…

Analysis of PDEs · Mathematics 2020-06-30 Philippe Laurençot

We consider a system of aggregated clusters of particles, subjected to coagulation and fragmentation processes with mass dependent rates. Each monomer particle can aggregate with larger clusters, and each cluster can fragment into…

Statistical Mechanics · Physics 2022-12-21 Jean-Yves Fortin

To model the dynamics of polymers formed through nucleation, elongated by polymerisation, shortened by depolymerisation and subject to aggregation reactions, we study a nonlinear integro-differential equation. Growth and shrinkage are…

Analysis of PDEs · Mathematics 2026-03-11 Julia Delacour , Marie Doumic , Carmela Moschella , Christian Schmeiser

We propose an efficient and fast numerical algorithm of finding a \emph{stationary} solution of large systems of aggregation-fragmentation equations of Smoluchowski type for concentrations of reacting particles. This method is applicable…

Computational Physics · Physics 2015-04-13 Vladimir Stadnichuk , Anna Bodrova , Nikolai Brilliantov

We study the solutions of the Smoluchowski coagulation equation with a regularisation term which removes clusters from the system when their mass exceeds a specified cut-off size, M. We focus primarily on collision kernels which would…

Statistical Mechanics · Physics 2013-05-29 Robin C. Ball , Colm Connaughton , Thorwald H. M. Stein , Oleg Zaboronski

We consider the multicomponent Smoluchowski coagulation equation under non-equilibrium conditions induced either by a source term or via a constant flux constraint. We prove that the corresponding stationary non-equilibrium solutions have a…

Mathematical Physics · Physics 2022-02-16 Marina A. Ferreira , Jani Lukkarinen , Alessia Nota , Juan J. L. Velázquez

The processes of simultaneous coagulation and Ostwald ripening of particles in the concluding stage of phase transformation are considered. We solve the integro-differential system of Smoluchowski-type kinetic and mass balance equations…

Numerical Analysis · Mathematics 2026-01-21 Robert T. Zaks , Sergey A. Matveev , Margarita A. Nikishina , Dmitri V. Alexandrov
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