New finite volume approach for multidimensional Smoluchowski equation on nonuniform grids

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Abstract

This present work is based on developing a deterministic discrete formulation for the approximation of a multidimensional Smoluchowski (Coalescence) equation on a nonuniform grid. The mathematical formulation of the proposed method is simpler, easy to implement, and focuses on conserving the first-order moment. The new scheme resolved the issue of mass conservation along individual components in contrast to the existing scheme which focuses only on conservation of the total mass of all components. The validation of the new scheme is conducted against the existing scheme by considering some classical tests. The comparison reveals that the new scheme has the ability to compute the higher-order moments with higher accuracy than the existing scheme on a coarse grid without taking any specific measures. For the higher-dimensional population balance equations, the mixing of components quantified using (Formula presented.) parameter is also computed accurately and efficiently using a very coarse nonuniform grid.

Original languageEnglish
Pages (from-to)955-977
Number of pages23
JournalStudies in Applied Mathematics
Volume147
Issue number3
DOIs
Publication statusPublished - Oct 2021

Keywords

  • average size particles
  • coalescence
  • finite volume scheme
  • integro-partial differential equation
  • mixing of components
  • Smoluchowski equation

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