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Development of smoothed particle hydrodynamics method for modeling active nematics
Author(s) -
Saghatchi Roozbeh,
Kolukisa Deniz Can,
Yildiz Mehmet
Publication year - 2022
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.7116
Subject(s) - smoothed particle hydrodynamics , discretization , liquid crystal , flow (mathematics) , mixing (physics) , physics , vorticity , constant (computer programming) , mechanics , kinetic energy , classical mechanics , statistical physics , vortex , optics , mathematics , mathematical analysis , computer science , programming language , quantum mechanics
This article proposes a novel graphics processing unit‐based active nematic flow solver based on the smoothed particle hydrodynamics (SPH) method. Nematohydrodynamics equations are discretized using the SPH algorithm. Flow behavior, nematic ordering, topological defects, and vorticity correlation are calculated and discussed in detail. The spectrum of the kinetic energy with respect to the wavenumber is calculated at high particle resolution, and its slope at the different length scales is discussed. To exploit the SPH capabilities, pathlines of nematic particles are evaluated during the simulation. Finally, the mixing behavior of the active nematics is calculated as well and described qualitatively. The effects of two important parameters, namely, activity and elastic constant are investigated. It is shown that the activity intensifies the chaotic mixing nature of the active nematics, while the elastic constant behaves oppositely.