CAJ | 학술논문

采用Euler-Euler多相流模型，建立了回转圆筒内气-固-固三相流动守恒方程，对两种粉体的混合均化过程进行了数值计算。计算结果表明：随着回转时间的增长，两种粉体的最大体积分数均逐渐下降，直至理论均值附近；不同时刻样本均值始终围绕理论均值波动，但样本方差逐渐减小并趋于平稳。计算结束时，滑石粉体积分数的样本方差为0.00101，均值为0.49955，与模拟计算理论均值0.5相比误差-0.1%，符合工程要求，计算模型有效。
채용Euler-Euler다상류모형，건립료회전원통내기-고-고삼상류동수항방정，대량충분체적혼합균화과정진행료수치계산。계산결과표명：수착회전시간적증장，량충분체적최대체적분수균축점하강，직지이론균치부근；불동시각양본균치시종위요이론균치파동，단양본방차축점감소병추우평은。계산결속시，활석분체적분수적양본방차위0.00101，균치위0.49955，여모의계산이론균치0.5상비오차-0.1%，부합공정요구，계산모형유효。
Euler-Euler multiphase flow model was used to establish the conservation equations for gas-solid-solid there-phase flow in rotary cylinder, the numerical calculation of the two powders homogenizing process was carried out. The results show that the maximum volume fractions of powders gradually decreased to the theory average values along with the rotating time. The sample average values waved around the theory average value in different time, but sample variance gradually decreased and tended to be stable. When calculation finished, the sample variance of volume fractions of talcum powders was 0.001 01 and the sample average value was 0.499 55, the relative error was -0.1% compared with the theory average value of 0.5. The results satisfy with engineering requirements and the calculation model is proved valid.