STUDY OF EFFECT OF VISCOSITY RESISTANCE IN ELECTROFHEOLOGICAL FLUID BY MICRO GRAVITY EXPERIMENTS

微重力实验研究电流流变粘度阻力的影响

• 批准号: 22654044
• 负责人: TAKEDA Mitsuo
• 金额: $ 1.96万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22654044/
• 关键词: 流体物理学; 電気粘性流体; 粘性抵抗; 無重力下実験; 自由落下実験; 誘電分極

We reported the first observation of electrorheological(ER) effect in a single phase ER suspension, comprising mono-dispersed dielectric particles, from a microgravity experiment. A highly sensitive electro-rheometer was designed for the measurements and the results show that, in the microgravity environment, the particles can form stable single phase suspension without a suspending liquid, which is usually necessary for the conventional ER fluid. It is found from the experiments that the size of the column structures formed by the particles exceeds the maximum column width usually observed in the two-phase ER fluids. Finite element method(FEM) was used to evaluate numerically the variation of the electric energy density with respect to the strain, and the results yield a good account of the measured data, especially in the low field region.

我们报告了单相ER悬浮液在单相悬浮液中的首次观察，其中包含来自微重力实验的单分散介电颗粒。高度敏感的电rheometer是为测量设计的，结果表明，在微重力环境中，这些颗粒可以形成稳定的单相悬浮液而无需悬浮液，这通常是常规ER流体所必需的。从实验中可以发现，由粒子形成的柱结构的大小超过了在两相ER流体中通常观察到的最大柱宽度。使用有限元方法（FEM）来评估电能密度相对于应变的变化，结果可以很好地说明测量数据，尤其是在低场区域。

项目成果

微小重力下における電気粘性液体の挙動と応用

微重力下电流变液的行为及应用

• 发表时间: 2011
• 作者: 余野建定;武田三男;宮丸文章;増野敦信;趙国慶;沈平;温維佳
• 通讯作者: 温維佳