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| 1 | Effects of Airflow Field on Droplets Diameter inside the Corrugated Packing of a Rotating Packed Bed显示文摘Rotating packing bed(RPB) has a better mixing performance than traditional mixers and shows potential application in the petroleum industry. However, acquisition of information about the mixing process directly through experiments is difficult because of the compact structure and complex multiphase flow pattern in RPB. To study the mixing characteristic, Fluent, the computational fluid dynamics(CFD) software, was used to explore the effect of airflow field on droplet diameter. For conducting calculations, the gas-liquid two-phase flow inside the packing was simulated with the RNG k-ε turbulence model and the Lagrange Discrete Phase Model(DPM), respectively. The numerical calculation results showed that coalescence and breakup of droplets can take place in the gas phase flow inside the packing and can be strengthened with increased rotating speed, thereby leading to the enlargement of the average diameter. | Xu Chengcheng Jiao Weizhou Liu Youzhi Guo Liang Yuan Zhiguo Zhang Qiaoling | 2014 | China Petroleum Processing & Petrochemical Technology2014，16，4： | 4 |
| 2 | 旋风单管排尘锥内颗粒沉积黏附的数值研究显示文摘采用数值模拟与理论分析的方法,建立了旋风单管内的颗粒壁面沉积黏附模型,在此基础上考察了处理量、操作温度、进料浓度、进料粒度等因素对排尘锥颗粒沉积的影响规律。结果表明:边壁气流剪切速度是影响颗粒沉积的关键,处理量增加,边壁处被分离颗粒浓度升高,且近壁气流剪切速度增大,排尘锥颗粒沉积黏附增加;操作参数及进料参数均影响颗粒壁面沉积,其中操作温度主要通过影响颗粒杨氏模量对颗粒壁面沉积黏附产生影响,温度升高导致颗粒杨氏模量降低,颗粒壁面沉积增加;进料浓度增加,颗粒与壁面碰撞几率增加,使得排尘锥段颗粒沉积加剧;1-10μm的微颗粒在排尘锥内滞留时间较长,易于沉积黏附。 | 赵艳 王建军 许伟伟 王锐 | 2015 | 石油炼制与化工2015，46，2： | 0 |
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