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KONA Powder and Particle Journal is a refereed scientific journal that publishes articles on powder and particle science and technology. This journal has been published annually since 1983 and is distributed free of charge to researchers, members of the scientific communities, universities and research libraries throughout the world, by Hosokawa Powder Technology Foundation (http://www.kona.or.jp) established by Mr. Masuo Hosokawa in 1991.
The Chinese character “粉” in the cover is pronounced “KONA” in Japanese, and means “Powder”. The hand written “
” is after the late Mr. Eiichi Hosokawa, founder of the Hosokawa Micron Corporation (http://www.hosokawamicron.co.jp).
Introduction of numerical simulation technologies is desired to optimize the design of industrial devices and/ or the operational conditions. The discrete element method (DEM) is often employed in the simulation of the granular flow. At present, the DEM has critical problems form a viewpoint of the industrial application. Specifically, modeling of arbitrary shaped wall boundary became problematic since solid particle-wall interaction algorithm was much complex. Signed distance function (SDF) based wall boundary model was newly developed to simulate the granular flow in an industrial system. The DEM/SDF method has been applied to actual industrial systems such as the die-filling, ribbon mixer and twin-screw kneader so far. For front cover, a new die-filling simulation was performed, where the die shape was “粉” (see the video at Doi:10.14356/kona.2016023). Please read the paper on pp.169–178.
