title: Gravity-driven clustering of inertial particles in turbulence.
abstract: We report a different kind of particle clustering caused purely by gravity, discovered in our simulation of particle-laden turbulence. Clustering in a vertical strip pattern forms when strong gravity acts on heavy particles. This phenomenon is explained by the skewness of the flow velocity gradient in the gravitational direction experienced by particles, which causes horizontal convergence of particles.
authors.affiliation: Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea.
authors.forename: Yongnam
authors.initials: Y
authors.lastname: Park
authors.affiliation: Department of Computational Science and Engineering and Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodamun-gu, Seoul, Korea.
authors.forename: Changhoon
authors.initials: C
authors.lastname: Lee
mesh_terms: D016000:Cluster Analysis; D003198:Computer Simulation; D006112:Gravitation; D008962:Models, Theoretical; D011336:Probability