Modelling of liquid penetration into a particle bed

2015 Fiscal Year Final Research Report

• Project/Area Number: 26820047
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Fluid engineering
• Research Institution: Osaka University
• Principal Investigator: Washino Kimiaki 大阪大学, 工学(系)研究科(研究院), 助教 (10726384)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 直接数値計算 / 離散要素法 / 粉体への液浸透 / 粉体内の液分散 / 数値シミュレーション

Outline of Final Research Achievements

In this work, numerical simulation models are developed to predict the mixing of powder and liquid in wet granulation processes. The developed models are used to investigate the impact of the microscopic particle structures on the powder-liquid mixing speed. It was succeeded to develop a DNS model to simulate the liquid penetration due to capillary action as well as a particle contact dispersion model. Linear relationship was found between the cosine of the apparent contact angle of the powder mixture with different contact angles and the volume ratio of the mixture. In addition, it was implied that the partial wetting of individual particle surface can significantly influence the contact liquid dispersion speed.

Free Research Field

粉体工学