CAJ | 학술논문

利用计算流体动力学(CFD)方法计算了四叶片倾斜涡轮结晶器内流体混合过程的流动场和浓度场,考察了搅拌桨在不同位置对搅拌混合流场及混合时间的影响,并结合电导率实验对模拟结果进行了验证.结果表明:当搅拌桨离底高度为液体高度的1/3时,结晶器内流场分布比较均匀,混合时间较短,适合工业上底部进料的结晶器.
이용계산류체동역학(CFD)방법계산료사협편경사와륜결정기내류체혼합과정적류동장화농도장,고찰료교반장재불동위치대교반혼합류장급혼합시간적영향,병결합전도솔실험대모의결과진행료험증.결과표명:당교반장리저고도위액체고도적1/3시,결정기내류장분포비교균균,혼합시간교단,괄합공업상저부진료적결정기.
The flow and concentration fields of mixing process in the crystallizer with a four-pitched-blade turbine were simulated by computational fluid dynamics (CFD), the effects of the impeller location on flow field and mixing time in the crystallizer were investigated, and the simulated results were verified through the conductivity experiments. The results showed that the distribution of the flow field in the crystallizer was uniform and the mixing time was short when the distance from the impeller to the bottom of the crystallizer was 1/3 height of the liquid in the crystallizer, which was quite suitable to the industrial bottom-feed crystallizer.