Levitation and Non-Contacting Control of Liquid Flow Utilizing Mose's Effect

利用摩西效应对液体流动进行悬浮和非接触控制

• 批准号: 10450072
• 负责人: YAMANE Ryuichiro
• 金额: $ 5.63万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10450072/
• 关键词: Moses's Effect; Non-Contacting Flow; Non-Contacting Control; Magnetic Levitation; Magnetic Fluid; Magnetohydrodymanics; 磁気浮場

Water is diamagnetic though very weak. Then, if the magnetic field is applied to the surface of the water, it is pushed aside and forms the vertical walls due to the repulsive magnetic force. This phenomenon is named Moses' effect after the prophet Moses in the Old Testament. Utilizing this effect, the diamagnetic materials can be levitated and fixed in the specified position without direct contact. If the magnetic poles are long in the flow direction, the virtual flow channel can be formed and the fluid can flow through the virtual channel. This leads to the new technology of material processing without contamination and the new dosage method to concentrate the medicine only to the diseased part avoiding the side effects.The fundamental principle depends on the weaker magnetization of the levitated fluid than that of the surrounding fluid, then the simulation even with the conventional weak magnets can be easily accomplished using the magnetic fluid as the surrounding fluid.In the present research, a pair of long magnetic poles are set face to face each other to form the virtual channel, and the stability of the fluid column inside of the channel, the modes of the induced oscillation, propagation of the waves and instability of the surface are experimentally and analytically investigated.

水虽然很弱，但却是抗磁性的。然后，如果将磁场施加到水面上，由于排斥磁力，它会被推到一边，形成垂直的墙。这一现象是以《旧约》中先知摩西的名字命名的。利用这一效应，可以将抗磁性材料悬浮并固定在指定位置，而不需要直接接触。如果磁极在流动方向上较长，则可以形成虚拟流道，并且流体可以通过虚拟流道流动。这就产生了新的无污染材料加工技术和新的给药方法，使药物只集中在患病部位，避免了副作用。其基本原理是悬浮流体的磁化强度比周围流体的磁化强度弱，因此即使在常规弱磁体的情况下，也可以很容易地用磁流体作为周围流体进行模拟。本研究将一对长磁极相对设置成虚拟通道，并对通道内流体柱的稳定性、诱导振荡模式、波的传播和表面的不稳定性进行了实验和分析。

项目成果

山根 他 4名: "The Anagular Oscillation of Magnetically Levitated Diamagnetic Fluid Column"日本機械学会第75期通常総会講演論文集. 98,1. 82-85 (1998)

Yamane 等人 4：“磁悬浮抗磁流体柱的角振荡”日本机械工程师学会第 75 届普通大会记录 82-85（1998 年）。

山根他4名: "The Angular Oscillation of Magnetically Leviated Diamagnetic Fluid Column"日本機械学会第75期通常総会講演論文集. 98,1. 82-85 (1998)

Yamane 等 4 人：“磁悬浮抗磁流体柱的角振荡”日本机械工程师学会第 75 届普通大会记录 98,1（1998）。

山根他4名: "Axial Oscillation of a Magnetically Levitated Non-magnetic Fluid Column inside a Straight Magnetic Pipe"Fluid Dynamics Research. 24,3. 147-159 (1999)

Yamane 和其他 4 人：“直磁管内磁悬浮非磁性流体柱的轴向振荡”流体动力学研究 24,3 (1999)。

山根他4名: "界面に平行な非一様磁場下における磁性流体界面の安定限界"日本機械学会論文集B編. 66,642. 398-405 (2000)

Yamane 等人 4：“平行于界面的非均匀磁场下磁性流体界面的稳定性极限”，日本机械工程师学会汇刊，B 版 66,642（2000 年）。

R. Yamane, et al.: "Axial Oscillation of a Magnetically Levitated Non-Magnetic Fluid Column inside a Magnetic Pipe"Fluid Dynamics Research. Vol. 12, No. 3. 147-159 (1999)

R. Yamane 等人：“磁管内磁悬浮非磁性流体柱的轴向振荡”流体动力学研究。