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Pseudo-particle simulation of multi-scale heterogeneity in fluidization

chinese Science Bulletin 2003年第7期48卷 634-636页

作者： ge wei, zhang jiayuan, li tinghua & li jinghai institute of process engineering, chinese academy of sciences, beijing 100080, china institute of process engineering Chinese Academy of Sciences Beijing 100080 China

Fluidization is a process of wide application, but its dynamic behavior is not well understood because of its multi-scale heterogeneity and regime multiplicity which are difficult to simulate in traditional numerical methods. By discretizing the fluid phase into a large number of interactive simple particles, which can incorporate many-body moving boundaries easily, pseudo-particle modeling (PPM) has re-produced reasonable radial and axial heterogeneity on macro-scale as well as solids clustering and fluid flows on meso- and micro-scales. The simulation suggests a consistent evolution of the complexity across different scales with itself serving as an ideal exploring tool.

关键词：流化作用杂质拟粒子模型化粒子法拟粒子仿真

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RESEARCH COLLABORATION GROUP ON MULTI-SCALE METHODOLOGY AND COMPLEX SYSTEMS

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china Particuology 2005年第6期3卷 290-295页

作者： jinghai li wei ge jiayuan zhang institute of process engineering Chinese Academy of Sciences Beijing 100080 P. R.China

In response to the evolution of science and technology from compartmentalization to reunification, the study of complex systems and multi-scale methodology has received increasing attention from various scientific disciplines and engineering fields, so much so that complexity has sometimes been called the science of the 21^st century with multi-scale methodology as an accompanying challenge. Although there is still perplexity in these aspects, their importance is not to be ignored. For instance, Science published a special issue on complexity science （Science, 1999）, and many institutions related to these two aspects have been established worldwide. Problems in chemical engineering which are non-linear and non-equilibrium （li et al., 1996a）,

关键词： science and technology complex systems

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