CAJ | 학술논문

针对水力旋流器易出现底流夹细的问题，提出并设计了一种抛物线型旋流器，利用模拟软件 Fluent 14．5对比分析了传统型和抛物线型旋流器的内部流场和分离性能，并进行了试验研究。模拟结果表明，与传统旋流器相比，抛物线型旋流器内部流场更加稳定，有效避免了因流场紊乱造成的粗细颗粒混杂。进一步的试验研究显示，抛物线型旋流器底流中细颗粒的含量明显降低，分离粒度由30μm 增加到49μm，陡度指数由0．13增加到0．2，表明旋流器的分离精度提高，底流夹细现象得到明显改善。
침대수력선류기역출현저류협세적문제，제출병설계료일충포물선형선류기，이용모의연건 Fluent 14．5대비분석료전통형화포물선형선류기적내부류장화분리성능，병진행료시험연구。모의결과표명，여전통선류기상비，포물선형선류기내부류장경가은정，유효피면료인류장문란조성적조세과립혼잡。진일보적시험연구현시，포물선형선류기저류중세과립적함량명현강저，분리립도유30μm 증가도49μm，두도지수유0．13증가도0．2，표명선류기적분리정도제고，저류협세현상득도명현개선。
In order to prevent the underflow product of a hydrocyclone from mixing with fine particles,a kind of parabolic hydrocyclone is proposed and designed.The simulation software Fluent 14.5 is used to simulate the internal flow field and separa-tion performance of the traditional and parabolic hydrocyclone,then the experimental study is carried out The simulation results show that,the internal flow field of the parabolic hydrocyclone is more stable than that of the traditional one,which effectively a-voids the mixture of the coarse and fine particles caused by the flow field disturbance.Further experimental results also demon-strate that,the cumulative percentage of fine particles in the underflow product decreases obviously.Moreover,the cut size in-creases from 30μm to 49μm and the steepness index increases from 0.13 to 0.2,which proves that the separation accuracy can be improved and the fine particles mixed in the underflow can be reduced obviously.