particle n. 1.颗粒,微粒;微量,极少量。 2.【物、数】粒子,质点。 3.【语法】虚词,不变词〔冠词、副词、介词、连接词、感叹词等〕;小品词 〔yes, no 等〕,词缀。 4.〔古语〕(文件中的)条,项。 5.【天主教】一小片圣饼。 He has not a particle of sense. 他一点脑子也没有。 fundamental [elementary] particles 【物理学】基本质点,基本粒子。
In addition , the thesis considered that the pseudo particle model should be used to simulate the microstructure of the multiphase flows . by study of the microstructure of the multiphase flows , we may get a real and accurate model of the interaction between particle to particle and particle to pseudo particle in the multiphase flows , and then may make a great progress in multiphase flows research by using the new combined model 文中认为,流体“拟颗粒”模型适合于计算模拟流场的微观结构,通过流体“拟颗粒”模型对多相流动微观结构的了解,从而建立颗粒与颗粒间、颗粒与“拟颗粒”间的相互作用模型,并借助本组合法可能实现多相流研究理论质的飞跃。
Based on the thoroughly review and summary in the progress history of the multiphase flows researching in recent fifty years , the thesis was made an advanced discussion on the wide foreground of the multiphase flows " study and application , and clarified some concept of multiphase flows " study . take gas - solid two - phase flows for example , the thesis discussed and classified the theoretical model of multiphase flows " study , that is continuum model , discrete particle model and pseudo particle model , and made a deep and detail discussion on the foundation , advantage and disadvantage about the three physical model . the thesis considered that all the mathematics models of the multiphase flows " study are based on the three physical models 本文在系统、全面地回顾和总结近五十年来多相流研究发展历史的基础上,进一步论述了多相流研究和应用的广阔前景;澄清了多相流研究中存在的一些模糊概念;以气固两相流研究为例,对多相流研究的各种理论模型进行了系统的分析、归纳和分类,从而把气固两相流研究的物理模型按其刻划的尺度和属性分为三类,即:连续介质模型( continuummodel ) 、离散颗粒模型( discreteparticlemodel ) 、流体拟颗粒模型( pseudoparticlemodel ) ,并对三类物理模型赖于存在的基础、长处和存在的问题进行了深入的分析、讨论;同时指出,多相流研究的各种数学模型都是建立在以上三类物理模型的基础上的,从而对各种数学模型的实质、优缺点和今后发展方向有了清晰的了解。