Development of a mixer without impellers as an application of a precessing cavity

开发无叶轮混合器作为旋进腔的应用

• 批准号: 21760130
• 负责人: GOTO Susumu
• 金额: $ 2.83万
• 依托单位: Okayama University (2010-2011)Kyoto University (2009)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760130/
• 关键词: 乱流; 歳差; 混合; 撹拌; 室内実験; 粒子画像流速測定; 数値シミュレーション; スペクトル法; 歳差運動; 撹拌翼; 渦構造; 攪拌翼; 乱流; 歳差; 混合; 撹拌; 室内実験; 粒子画像流速測定; 数値シミュレーション; スペクトル法; 歳差運動; 撹拌翼; 渦構造; 攪拌翼

The rotational motion of the spin axis of a rotating object is called the "precession". It has been shown that a weak precession of a cavity can lead to strong turbulence of the confined fluid. Aiming to develop a new type of mixer without impellers on the basis of this feature of precession, we have conducted laboratory experiments and numerical simulations of flow in a precessing sphere and in a spheroid. We have then revealed the appropriate combination of control parameters, and the appropriate shape of the cavity to sustain strong turbulence in a precessing cavity.

旋转对象的旋转轴的旋转运动称为“进动”。已经表明，腔体的弱进动可能会导致受限液的湍流。为了在没有叶轮的基础上开发一种新型混合器，我们已经在进攻球和球体中进行了实验室实验和流动的数值模拟。然后，我们揭示了控制参数的适当组合，以及在进攻腔中维持强湍流的适当形状。