International Collaboration for Promoting Complexity Science

我们与日本、美国、日本、美国、日本、日本、欧洲和亚洲。我们的合作研究总结如下。(1)通过MHD模拟发现，在旋转球壳中，MHD发电机过程自发产生了一个具有全局有序结构的强磁场，并且经过长时间后，磁场的极性突然反转. (2)我们研究了两个碰撞球斑的合并过程，发现在这个过程中形成了一个高压的场反转位形。(3)利用粒子模拟方法研究了无碰撞驱动重联的物理过程。应该强调的是，由于两个动力学效应和离子在静电场的作用下被加热，磁重联在两个步骤中演化。(4)粒子模拟表明，在开放系统中，如果存在熵驱逐过程，则在正常离子声学双层的产生和消失之后，将产生具有大能隙的超离子声学双层。(5)我们已经开发了一个粒子模拟程序的尘埃颗粒与动态充电过程，并阐明了条件下，尘埃颗粒的凝聚发生。(6)通过对高分子链进行分子动力学模拟，我们在分子水平上研究了结构形成过程。强调了高分子链的结构形成是分几步进行的。(7)我们开发了三维交互式数据可视化系统“CompleXcope”，这是虚拟现实系统的一个新应用，是理解复杂现象的有力工具。

We have investigated the details of complex phenomena in rich variety of non-equilibrium open systems in collaboration with scientists In Japan, U.S.A., Europe and Asia. The summary of our collaboration research is described in the following.(1) We found from the MHD simulation that a strong magnetic field with a global and ordered structure is spontaneously generated by the MHD dynamo process in a rotating spherica1 shell, and its polarity is suddenly reversed after a long duration.(2) We have studied the merging process of two col1iding spheromaks, and found that a field-reversed configuration with a high pressure is formed through this process.(3) We have studied the physical process of collisionless driven reconnection by means of particle simulation. It should be emphasized that magnetic reconnection evolves in two steps due to two kinetic effects and the ions anomalously heated by the action of an electrostatic field.(4) Particle simulation has revealed that a super ion-acoustic double layr with a large potential gap is generated after the generation and disappearance of a norma1 ion-acoustic double layr if there exists an entropy expulsion process in an open system.(5) We have developed a particle simulation code for dust grains with dynamically charging processes, and clarified the condition under which the coagulation of dust grains takes place.(6) We have investigated the structure formation process at a molecular level by carrying out a molecular dynamics simulation of polymer chains . It is emphasized that the structure formation of polymer chains proceeds in a few steps.(7) We have developed three-dimensiona1 interactive data visualizing system "CompleXcope", which is a new application of the virtual reality system, as a powerful tool to comprehend complex phenomena.