CAJ | 학술논문

采用CFD软件FLUENT,对新型的水平三向撞击流反应(混合)器内部流场进行数值模拟研究.以4种工况作为研究对象,将模拟结果与PDA实验测试结果进行比较,具有良好的一致性.结果表明:水平三向撞击流的水平中心面湍流强度分布呈"单峰"分布,峰值位置即为湍流最为剧烈位置,即撞击中心处.水平三向撞击流反应器中,撞击中心区湍动能分布形状呈"正三角型"分布,三角形内部呈"靶式"分布,形状较为规则.湍流耗散率分布与湍动能在反应器内的分布规律非常相似,湍流动能分布较大的区域,湍流耗散率分布亦较大,反之亦然.
채용CFD연건FLUENT,대신형적수평삼향당격류반응(혼합)기내부류장진행수치모의연구.이4충공황작위연구대상,장모의결과여PDA실험측시결과진행비교,구유량호적일치성.결과표명:수평삼향당격류적수평중심면단류강도분포정"단봉"분포,봉치위치즉위단류최위극렬위치,즉당격중심처.수평삼향당격류반응기중,당격중심구단동능분포형상정"정삼각형"분포,삼각형내부정"파식"분포,형상교위규칙.단류모산솔분포여단동능재반응기내적분포규률비상상사,단류동능분포교대적구역,단류모산솔분포역교대,반지역연.
The CFD software FLUENT was used to make numerical simulation for the internal flow fields of a new type of three-jet impinging stream reactor. This study included four different operating con-ditions,and the results of simulation were compared with experimental results and had good consistency. The results showed that the distribution of three-jet impinging stream turbulent intensity was the unimodal distribution,and the peak was the most violent turbulent position,namely the impact center. The turbulent kinetic energy of the impact center zone in three-jet impinging stream reactor showed a"regular triangle"type distribution,and distribution inside of the triangle was an inerratic"Target Type" shape. In the three-jet impinging stream reactor,the distribution of turbulent dissipation rate was quite similar with the distri-bution of turbulent kinetic energy. In the larger distribution area of the turbulent kinetic energy,the distri-bution of turbulent dissipation rate was also larger,and vice versa.