Co-operative Research for Magnetic Fluid Engineering

磁流体研究小组的主要目的之一是组织第四届国际磁流体会议。这个小组的活动取得了巨大的成功。会议论文发表在《Journal of Magnetic and Magnetic Materials》Vol.65(1987),173-445，作为会议论文集。我们组与这个研究项目有关的演讲达到了15次。并在1987年12月召开的磁流体工程内部会议上发挥了主导作用，进行了为期2年的研究总结。本课题的研究成果如下：(1)在磁流体的制备与性能研究领域，一种由具有优异性能的金属颗粒组成的磁流体的制备方法引起了人们的关注。此外，还对强磁场中磁性粒子的团聚现象和粒子的光学特性进行了研究。(2)在磁流体动力学基础研究领域，提出了新的磁流体控制方程体系。此外，由于对管道内的定常和非定常流动特性的研究以及流体表面的不稳定性的显著进展，为磁流体动力学的新发展提供了可能性。(3)在磁流体应用领域，磁流体密封性能的改进取得了丰硕的成果。此外，还报道了磁流体在阻尼器、执行器、研磨装置、能量转换系统开发和医疗等方面的新进展。

One of the main purpose of the group for research on magnetic fluid was to organize the 4th International Conference on Magnetic Fluids. Activities of the group have been crowned with great success. The papers presented in the conference was published in Journal of Magnetism and Magnetic Materials Vol.65(1987),173-445, as the proceedings of the conference. The amount of presentation concerned with the research project in our group reached 15. Also, the members of the group played leading parts in the internal meeting of magnetic fluid engineering held in December 1987 and carried out a summary of research for 2 years.The results concerned with this research project are as follows:(1) In the research field of the preparation and properties of magnetic fluids, a preparation method of a magnetic fluid composed of metalic particles which have excellent properties drew attention. Also, the studies of aggromeration phenomenon of magnetic particles in a strong magnetic field and an optical characteristic of a particle have been advanced.(2) In the field of the fundamental studies of the magnetic fluid dynamics, new governing equation system of magnetic fluid was proposed. Also, it would be noticed that the possibility of new developments of magnetic fluid dynamics has been raised since the research into the steady and unsteady flow characteristics in a pipe and the instability of fluid surface has remarkably progressed.(3) In the field of the applications of magnetic fluids, fruitful results have been obtained regarding the improvement of the performance of magnetic fluid seals. In addition, new progresses were reported in the applications of the magnetic fluid such as damper, actuator, grinding device, energy coversion system development and medical treatment.