高校化学工程学报2024，Vol.38Issue(2)：217-228,12.DOI:10.3969/j.issn.1003-9015.2024.02.006
双组分层撞击流反应器流场时空演化数值模拟
Numerical study on temporal and spatial evolution of flow fields in a two-layer impinging stream reactor
摘要
Abstract
In order to study the temporal and spatial evolution of flow fields in a two-layer impinging stream reactor,a large eddy simulation(LES)method was used for numerical simulation.The velocity field and vorticity field of the axial,circumferential and radial surfaces on the spatial scale were analyzed together with the third generation vortex identification method.The evolution law of velocity field,vorticity field and vortex local rotation axis was revealed on the time scale.The results show that the vortex intensity of the axial and radial surfaces is multi-peak distribution,and the change of the vortex intensity of the circumferential torus can be divided into three stages:enhancement-stability-enhancement.Considering the XOY surface as an example,the vortex generation period can be divided into 6 stages according to position change of the vortex and the collision and fragmentation of the multi-scale vortex between the two nozzle layers,and the vortex evolution period can be divided into 12 stages,which is useful to predict the flow pattern change and flow field stage in the reactor.关键词
撞击流/湍流/流场/数值模拟/时空演化/流体力学Key words
impinging stream/turbulent flow/flow field/numerical simulation/temporal and spatial evolution/fluid mechanics分类
化学化工引用本文复制引用
张建伟,刘名扬,董鑫,冯颖..双组分层撞击流反应器流场时空演化数值模拟[J].高校化学工程学报,2024,38(2):217-228,12.基金项目
国家自然科学基金(21476141) （21476141）
辽宁省教育厅科学研究经费(LQ2020017,LJ2020036) （LQ2020017,LJ2020036）
辽宁省"兴辽英才计划"高水平创新创业团队(XLYC1808025) （XLYC1808025）
中央引导地方科技发展资金第一批计划(2023JH6/100100037) （2023JH6/100100037）
沈阳化工大学优青托举计划(2022YQ005). （2022YQ005）
