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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…

偏微分方程分析 · 数学 2021-03-25 Marina A. Ferreira , Jani Lukkarinen , Alessia Nota , Juan J. L. Velázquez

We prove uniqueness of measure solutions for a multi-component version of Smoluchowski's coagulation equation. The result is valid for a broad range of coagulation kernels and allows to include a source term. The classical coagulation…

偏微分方程分析 · 数学 2023-06-21 Sebastian Throm

Global weak solutions to the continuous Smoluchowski coagulation equation (SCE) are constructed for coagulation kernels featuring an algebraic singularity for small volumes and growing linearly for large volumes, thereby extending previous…

偏微分方程分析 · 数学 2018-04-04 Prasanta Kumar Barik , Ankik Kumar Giri , Philippe Laurençot

In this article we prove the existence of solutions to the singular coagulation equation with multifragmentation. We use weighted $L^1$-spaces to deal with the singularities and to obtain regular solutions. The Smoluchowski kernel is…

数学物理 · 物理学 2013-10-30 Carlos Cueto Camejo , Gerald Warnecke

In this article we prove the existence of solutions to the coagulation equation with singular kernels. We use weighted L^1-spaces to deal with the singularities in order to obtain regular solutions. The Smoluchowski kernel is covered by our…

数学物理 · 物理学 2014-01-22 Carlos Cueto Camejo , Robin Gröpler , Gerald Warnecke

The Smoluchowski coagulation equation (SCE) is a population balance model that describes the time evolution of cluster size distributions resulting from particle aggregation. Although it is formally a mass-conserving system, solutions may…

偏微分方程分析 · 数学 2025-06-11 Masato Kimura , Hisanori Miyata

The multicomponent coagulation equation is a generalisation of the Smoluchowski coagulation equation in which size of a particle is described by a vector. As with the original Smoluchowski equation, the multicomponent coagulation equation…

数学物理 · 物理学 2024-01-24 Jochem Hoogendijk , Ivan Kryven , Camillo Schenone

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…

偏微分方程分析 · 数学 2023-06-16 Prasanta Kumar Barik , Asha K. Dond , Rakesh Kumar

We consider Smoluchowski's coagulation equation with a kernel of the form $K = 2 + \epsilon W$, where $W$ is a bounded kernel of homogeneity zero. For small $\epsilon$, we prove that solutions approach a universal, unique self-similar…

偏微分方程分析 · 数学 2019-10-18 José A. Cañizo , Sebastian Throm

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…

概率论 · 数学 2007-05-23 James R. Norris

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…

数学物理 · 物理学 2022-02-16 Marina A. Ferreira , Jani Lukkarinen , Alessia Nota , Juan J. L. Velázquez

In this paper we prove that the time dependent solutions of a large class of Smoluchowski coagulation equations for multicomponent systems concentrate along a particular direction of the space of cluster compositions for long times. The…

偏微分方程分析 · 数学 2024-10-02 Marina A. Ferreira , Jani Lukkarinen , Alessia Nota , Juan J. L. Velázquez

Uniqueness of mass-conserving self-similar solutions to Smoluchowski's coagulation equation is shown when the coagulation kernel $K$ is given by $K(x,x\_*)=2(x x\_*)^{-\alpha}$, $(x,x\_*)\in (0,\infty)^2$, for some $\alpha>0$.

偏微分方程分析 · 数学 2018-04-18 Philippe Laurençot

We establish nearly optimal rates of convergence to self-similar solutions of Smoluchowski's coagulation equation with kernels $K = 2$, $x + y$, and $xy$. The method is a simple analogue of the Berry-Ess\'een theorem in classical…

适应与自组织系统 · 物理学 2011-04-26 Ravi Srinivasan

It is well known that for a large class of coagulation kernels, Smoluchowski coagulation equations have particular power law solutions which yield a constant flux of mass along all scales of the system. In this paper, we prove that for some…

偏微分方程分析 · 数学 2022-07-26 Marina A. Ferreira , Jani Lukkarinen , Alessia Nota , Juan J. L. Velázquez

In this paper we show how the method of Zakharov transformations may be used to analyze the stationary solutions of the Smoluchowski aggregation equation for arbitrary homogeneous kernel. The resulting massdistributions are of Kolmogorov…

统计力学 · 物理学 2009-11-10 Colm Connaughton , R. Rajesh , Oleg Zaboronski

We characterize the long-time behaviour of solutions to Smoluchowski's coagulation equation with a diagonal kernel of homogeneity $\gamma < 1$. Due to the property of the diagonal kernel, the value of a solution depends only on a discrete…

偏微分方程分析 · 数学 2016-08-11 Philippe Laurençot , Barbara Niethammer , Juan J. L. Velázquez

Motivated by the recent results of Andreis-Iyer-Magnanini (2023), we provide a short proof, revisiting the one of Escobedo-Mischler-Perthame (2002), that for a large class of coagulation kernels, any weak solution to the Smoluchowski…

偏微分方程分析 · 数学 2025-01-08 Nicolas Fournier

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…

概率论 · 数学 2012-02-24 Jean Bertoin

We study a spatial Markovian particle system with pairwise coagulation, a spatial version of the Marcus--Lushnikov process: according to a coagulation kernel $K$, particle pairs merge into a single particle, and their masses are united. We…

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