Monodisperse gas-solid mixtures with intense interphase interaction in two-fluid smoothed particle hydrodynamics

Olga P. Stoyanovskaya, Tatiana A. Glushko, Valery N. Snytnikov, Nicolay V. Snytnikov

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2 Citations (Scopus)

Abstract

Simulations of gas-solid mixtures are used in many scientific and industrial applications. Two-Fluid Smoothed Particle Hydrodynamics (TFSPH) is an approach when gas and solids are simulated with different sets of particles interacting via drag force. Several methods are developed for computing drag force between gas and solid grains for TFSPH. Computationally challenging are simulations of gas-dust mixtures with intense intephase interaction, when velocity relaxation time tstop is much smaller than dynamical time of the problem. In explicit schemes the time step t must be less than tstop, that leads to high computational costs. Moreover, it is known that for stiff problems both grid-based and particle methods may require unaffordably detailed resolution to capture the asymptotical bahaiviour of the solution. To address this problem we developed fast and robust method for computing stiff and mild drag force in gas solid-mixtures based on the ideas of Particle-in-Cell approach. In the paper we compare the results of new and previously developed methods on test problems.

Original languageEnglish
Title of host publication6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019
EditorsEugenio Onate, P. Wriggers, T. Zohdi, M. Bischoff, D.R.J. Owen
PublisherInternational Center for Numerical Methods in Engineering
Pages754-762
Number of pages9
ISBN (Electronic)9788412110111
Publication statusPublished - 2019
Event6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019 - Barcelona, Spain
Duration: 28 Oct 201930 Oct 2019

Publication series

Name6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019

Conference

Conference6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019
CountrySpain
CityBarcelona
Period28.10.201930.10.2019

Keywords

  • Aerosol particle
  • Asymptotic preserving method
  • Gas dust mixture
  • Gas-solid mixture
  • Intense interphase interaction
  • Smoothed particle hydrodynamics
  • SPH
  • Stiff relaxation term
  • TFSPH
  • Two fluid smoothed particle hydrodynamics

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