The temperature field along the axis , axial velocity , the turbulent energy , and the concentration of the particles were investigated when the temperature field varied . the numerical experiment shows that the thermophoresis force changes the concentration of the 2 - micron particle , decreasing in the main flow and increasing in the near - wall region 数值实验的结果表明在两相流模型中添加热泳力源项会对2微米颗粒在流场中的浓度分布有很大的变化，主流区的颗粒浓度降低，近壁区颗粒浓度在温差不大的时候，提高几十倍。
It ' s necessary to study on the non - optimal areas . adopting the method of theory combing with practice , this paper study the conception , characteristics , the causes of its coming into being of non - optimal areas , analyzes the factors influencing its development and its optimizing mechanism , probes the development theory basis and new development ideology . also , the paper classified the non - optimal areas as three types according to their leading driven force of tourism developmental ) economy - driven non - optimal areas ; ( 2 ) demand - driven non - optimal areas ; ( 3 ) society - driven non - optimal areas 同时，本文按非优区旅游发展的主导驱动力来源不同，将非优区分为： ( 1 )经济驱动型非优区：其驱动力源于发达的经济、与外界广泛的经济商贸联系； ( 2 )需求驱动型非优区：其动力源于毗邻的大中城市或特大城市居民频繁的近程旅游需求； ( 3 )社会驱动型非优区：其动力源于本地居民脱贫要求及当地旅游开发条件的改善。
This paper reveals the collision energy of a celestial body with the earth could induce a sufficient change of rotating speed of the earth to make the folding orogenesis , and briefly explains its mechanics , and therefore offers a brandnew perspective for researching continental orogenesis 揭示了星地碰撞可以为大陆造山运动提供足够强大的突发性动力来源，并简要阐明了其作用机制，可以解决地质力学所遇到的力源不足和被海水运动取代的两大难题，从而为大陆构造研究开辟了一个新境界。
