Rheological evaluation of highly viscous slurry by using a numerical computation

Research Project

Project/Area Number	25630428
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Multi-year Fund
Research Field	Nuclear engineering
Research Institution	The University of Tokyo
Principal Investigator	SAKAI Mikio 東京大学, 工学(系)研究科(研究院), 准教授 (00391342)
Project Period (FY)	2013-04-01 – 2015-03-31
Project Status	Completed (Fiscal Year 2014)
Budget Amount *help	¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000) Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords	離散要素法 / 流体力学的相互作用力 / 高粘性流体 / 固体粒子 / MPS法 / 直接計算 / 白金族粒子 / 見かけ粘度 / 溶融ガラス / クォータニオン / ガラス溶融炉
Outline of Final Research Achievements	In this study, we develop new models to simulate the behavior of solid particles in a highly viscous fluid. Introduction of the quarternion was investigated to simulate the rotational angle of the non-spherical solids in the DEM-DNS method. Besides, implicit algorithm and fast matrix solver were employed in the CFD. In addition, DEM-MPS method was accelerated to simulate a highly viscous slurry flow efficiently. Specifically, efficient algorithm was introduced in pressure and viscous terms. Adequacy of the DEM-MPS method was proved qualitatively through this study.