Research output: Contribution to journal › Conference article › peer-review
Gas-monodisperse dust mixtures in smoothed particle hydrodynamics : Computing of stiff non-linear drag. / Stoyanovskaya, O. P.; Glushko, T. A.; Okladnikov, F. A. et al.
In: Journal of Physics: Conference Series, Vol. 1336, No. 1, 012015, 20.11.2019.Research output: Contribution to journal › Conference article › peer-review
}
TY - JOUR
T1 - Gas-monodisperse dust mixtures in smoothed particle hydrodynamics
T2 - 2nd Workshop on Numerical Modeling in MHD and Plasma Physics: Methods, Tools, and Outcomes, MHD-PP 2019
AU - Stoyanovskaya, O. P.
AU - Glushko, T. A.
AU - Okladnikov, F. A.
AU - Snytnikov, V. N.
AU - Snytnikov, N. V.
PY - 2019/11/20
Y1 - 2019/11/20
N2 - Simulation the dynamics of gas-solid mixtures is crucial in many applications: chemical reactor design, evolution of circumstellar discs, etc. Such mixtures where gas is a carrier phase and solid grains are dispersed phase can be simulated as interpenetrating continuum media. The characteristic parameter of this problem is relaxation time between gas and dust velocities. In many applications this parameter varies significantly during the simulation (from small to unity). Moreover, the drag force can be non-linearly dependent on solids to gas relative velocity. These factors place high requirements on the numerical methods for such problems. We propose a novel non-iterative algorithm for Smoothed Particle Hydrodynamics for computing gas-solid mixtures with exchange momentum between phases. Forces (except drag force) are approximated explicitly, while drag force is linearized and velocity relaxation time is approximated explicitly while relative velocity is approximated implicitly. The algorithm was tested on dynamical problems for dusty gas mixtures. It was shown that in the developed algorithm for stiff nonlinear drag we can use temporal and spatial resolution independent of drag parameters.
AB - Simulation the dynamics of gas-solid mixtures is crucial in many applications: chemical reactor design, evolution of circumstellar discs, etc. Such mixtures where gas is a carrier phase and solid grains are dispersed phase can be simulated as interpenetrating continuum media. The characteristic parameter of this problem is relaxation time between gas and dust velocities. In many applications this parameter varies significantly during the simulation (from small to unity). Moreover, the drag force can be non-linearly dependent on solids to gas relative velocity. These factors place high requirements on the numerical methods for such problems. We propose a novel non-iterative algorithm for Smoothed Particle Hydrodynamics for computing gas-solid mixtures with exchange momentum between phases. Forces (except drag force) are approximated explicitly, while drag force is linearized and velocity relaxation time is approximated explicitly while relative velocity is approximated implicitly. The algorithm was tested on dynamical problems for dusty gas mixtures. It was shown that in the developed algorithm for stiff nonlinear drag we can use temporal and spatial resolution independent of drag parameters.
UR - http://www.scopus.com/inward/record.url?scp=85076222509&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1336/1/012015
DO - 10.1088/1742-6596/1336/1/012015
M3 - Conference article
AN - SCOPUS:85076222509
VL - 1336
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012015
Y2 - 10 October 2019 through 11 October 2019
ER -
ID: 22981959