An efficient finite-difference method for solving Smoluchowski-type kinetic equations of aggregation with three-body collisions

Authors

  • D.A. Stefonishin Lomonosov Moscow State University
  • S.A. Matveev Skolkovo Institute of Science and Technology
  • A.P. Smirnov Lomonosov Moscow State University
  • E.E. Tyrtyshnikov Institute of Numerical Mathematics of RAS (INM RAS) https://orcid.org/0000-0002-4754-0528

DOI:

https://doi.org/10.26089/NumMet.v19r325

Keywords:

three-body Smoluchowski equation, kinetics of aggregation processes, predictor-corrector scheme, low-rank tensor approximations, discrete convolution

Abstract

We consider a model of aggregation processes for the Smoluchowski-type kinetic equations with three-body collisions of particles. We propose a numerical method for the fast solving of Cauchy problems for the corresponding systems of equations. The proposed method allows one to reduce the step complexity O(N3) of the finite-difference predictor-corrector scheme to O(RNlogN) without loss of accuracy. Here the parameter N specifies the number of considered equations and R is the rank of kinetic coefficient arrays. The efficiency and accuracy of the proposed numerical method are demonstrated for model problems of aggregation kinetics.

Author Biographies

D.A. Stefonishin

S.A. Matveev

A.P. Smirnov

Lomonosov Moscow State University
• Associate Professor

E.E. Tyrtyshnikov

References

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Published

26-12-2018

How to Cite

Стефонишин Д.А., Матвеев С.А., Смирнов А.П., Тыртышников Е.Е. An Efficient Finite-Difference Method for Solving Smoluchowski-Type Kinetic Equations of Aggregation With Three-Body Collisions // Numerical Methods and Programming (Vychislitel’nye Metody i Programmirovanie). 2018. 19. 261-269. doi 10.26089/NumMet.v19r325

Issue

Section

Section 1. Numerical methods and applications

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