文档介绍：摘要振荡流反应器(OscillatoryFlowReactor,缩写为OFR)是一种新型的化工过程设备,具有良好的混合、传热、传质性能,传递过程特性易于控制,在化工生产中有广泛的应用;羚压n粒子的悬浮分离、絮凝、过滤、化学反应器等等。OFR已引起了化学工程研究人员的关注,进行了一些基础性的研究工作,获得了很有意义的结桌)/ 本文应用CFD方法,基于三维振荡流场数值模拟结果,对OFR 中注入示踪粒子的分散过程进行数值模拟研究,具体研究了净流量为零,St=,Re。=200、250、500,注入粒子数为1000,单个腔室情况下的示踪粒子运动轨迹和示踪粒子浓度分布的非均匀度随时间的演变过程。本文在数学上应用Lagrangian法来描述粒子运动,首次实现了 OFR三维流场中注入粒子分散过程的数值模拟,获得到了粒子浓度分布演变过程的定量结果,为进一步的研究打下了良好基础。关键词:振荡流反应器,数值模拟,注入分散过程 Abstract The Oscillatory Flow Reactor(OFR)is a HeyF type ofchemical process equipment,which shows good performance mixing,heat and mass transfer,and which the characteristics of transfer processes are easy has great potential of wide uses chemical engineering,such as particles suspension and separation,’ulation,filtration,chemical reactor, has attracted great interests ofresearchers chemical fundamental studies have been carried out on OFR,and many useful results have been achieved. Inthisthesis,CFD method has been used,on the base essful simulation of 3-dimensional oscillatory flow simulate numerically the injection dispersion oftracing particles study focused on themotion oftracing particles and the evolution ofnon—uniformity ofparticle concentration the cases of flow,St=,and Reo。200、250,500 respectively,number oftracing particles=1 000,and single the time implement thenumerical simulation ofparticleinjection dispersion inthe3-dimensional flow field OFR withLagrangian description t。treat motion ofparticles,and obtain quantitative results ofthe evolution ofparticle concentration distribution,which should provide a very helpful base for further research work Key words:oscillatory flowreactor,numerical simulation,injection dispersion 浙江犬学碗l一学位论文第一章前言 l-l课题背景以石油和天然气为主要原料的化学工业各种催化反应被广泛应用,这就要求在菠应技本秘反应嚣设计方矮墩出鬟大努力。龙其爨在生产援摸舅藏大型他的趋势下,其影响就更大了,因此要求技术、设备上精益求精。到八十年代初期,随蓑人们研究斡不鼗搭蓑,霹振荡滚爱应嚣(Oscillatory Flow Reactor缀萼为 OFR)及振荡流场技术有了充分的重视。翠在1959年,Karr最先在柱寨流装罨上加上振荡,获褥了很好的传葳、传热效果。随滕出现了带沟槽的振荡设备,如薄膜制氧器(inembrane—oxygenators)。从八十