管径对聚丙烯环管反应器内部流场的影响

文章通过运用计算流体力学(CFD)软件,对聚丙烯环管反应器内部流体在相同流速不同管径下的流场进行研究分析。通过对求解计算得到的相同速度不同管径下流场中的速度云图、压力云图以及湍动能云图的研究分析,判断出在何种管径下聚丙烯环管反应器的结构设计最为合理,丙烯聚合反应能够正常进行,对丙烯聚合反应更有利。     

Elimination of Sexual Discrimination in English Study

Gender discrimination is a social attitude that is re- flected in language. The representation of gender discrimination in the English language has a variety of forms, and can be eliminated by vari- ous means. English teachers are supposed to observe these phenomenon, avoiding using sexual prejudical words and helping students to learn to use neuter words so that they can communicate with English native speakers effortlessly without hurting the latter. This thesis is tending to talk about the ways of removing sexism in English study.