TY - GEN

T1 - Monodisperse gas-solid mixtures with intense interphase interaction in two-fluid smoothed particle hydrodynamics

AU - Stoyanovskaya, Olga P.

AU - Glushko, Tatiana A.

AU - Snytnikov, Valery N.

AU - Snytnikov, Nicolay V.

N1 - Funding Information: This work was supported by the Russian Science Foundation grant 19-71-10026. Publisher Copyright: © 2019 The Authors. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - Aerosol particle

KW - Asymptotic preserving method

KW - Gas dust mixture

KW - Gas-solid mixture

KW - Intense interphase interaction

KW - Smoothed particle hydrodynamics

KW - SPH

KW - Stiff relaxation term

KW - TFSPH

KW - Two fluid smoothed particle hydrodynamics

UR - http://www.scopus.com/inward/record.url?scp=85097061860&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85097061860

T3 - 6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019

SP - 754

EP - 762

BT - 6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019

A2 - Onate, Eugenio

A2 - Wriggers, P.

A2 - Zohdi, T.

A2 - Bischoff, M.

A2 - Owen, D.R.J.

PB - International Center for Numerical Methods in Engineering

T2 - 6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019

Y2 - 28 October 2019 through 30 October 2019

ER -