2015 Fiscal Year Final Research Report
Study on the generalization of the fluid mixing theory, including an asymmetric mixing
Project/Area Number |
24560920
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
|
Research Institution | Yokohama National University |
Principal Investigator |
Nishi Kazuhiko 横浜国立大学, 工学(系)研究科(研究院), 准教授 (20262412)
|
Project Period (FY) |
2012-04-01 – 2016-03-31
|
Keywords | ミキシング / 流脈面 / 偏心撹拌 / 数値混合実験 / 完全邪魔板条件 / 撹拌所要動力 / 水平荷重 |
Outline of Final Research Achievements |
In this study, we aim to build a general theory to explain the mixing ranging from the laminar state to the turbulent state. For the laminar mixing, the streak lobe in the stirred vessel was investigated in experiments and numerical simulation. Index for quantifying the structure of the streak lobe was proposed and it was correlated with mixing process and mixing rate. In the transition and turbulent mixing, the dynamic change of power consumption and horizontal load for the vertical paddle impeller and large type impeller were investigated. They were measured in the concentric and eccentric conditions. Based on the frequency analysis of these data, the mixing effect was separated into convection mixing associated with streak lobe and turbulent diffusion mixing effect based on the turbulent eddy. Quantitative discussion of each of the mixing effect was advanced to general of the mixing theory.
|
Free Research Field |
化学工学
|