Numerical Simulation on Characteristics of Bubbles in Process of GasPassing Through Pool Base on Bubble Number Density Model
1. Inner Mongolia Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metallic Resources, Inner Mongolia University of Science and Technology, Baotou 014010, China;
2. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China
Abstract An average bubble number density (ABND) transport equation considering bubbles breakup and coalescence was merged with the Euler-Euler turbulence two-fluid model in the Computational Fluid Dynamics (CFD) to establish the CFD-ABND coupling model which was used to study the bubble size distribution and the interfacial area concentration (IAC) distribution in the pool when the gas-solid flow passed through the pool. The quantitative results of bubbles size and IAC distribution were observed, and the influence of gas velocity on the distribution of the bubble and the IAC was analyzed. It was found that the present model had a better performance for predicting the bubble size and IAC distribution. The results showed that the larger bubble and the higher IAC mainly existed near the exit and outer wall of the cooling tube. The separator inserter IAC in the pool was very helpful to strengthen the disturbance between gas and liquid, which could effectively reduce the bubble size and increase the IAC.
Wu Xuan1,2,Jiao Jinjin2 et al. Numerical Simulation on Characteristics of Bubbles in Process of GasPassing Through Pool Base on Bubble Number Density Model[J]. 化学反应工程与工艺, 2015, 31(2): 115-122.
Wu Xuan1,2,Jiao Jinjin2 et al. Numerical Simulation on Characteristics of Bubbles in Process of GasPassing Through Pool Base on Bubble Number Density Model[J]. 化学反应工程与工艺, 2015, 31(2): 115-122.
