石油化工2011，Vol.40Issue(12)：1308-1315,8.
基于MECST气固相间曳力模型的气体-颗粒团聚物流动特性的数值研究
Numerical Simulation of Flow Behavior of Gas and Particle Clusters Based on Drag Force Model with MECST
沈志恒 1李巍 1张慧芳 1陆慧林2
作者信息
- 1. 海洋石油工程股份有限公司设计公司,天津300451
- 2. 哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001
- 折叠
摘要
Abstract
The relationship between the parameters and the drag force of a gas-solid two-phase system was established on the basis of multi-scale energy conservation in the inhomogeneous flow of particles. A modified drag force model with the minimal energy consumption for suspending and transporting (MECST) was proposed. By application of the modified drag force model with MECST to the Euler-Euler two-fluid model, the flow behaviors of gas, particles and particle clusters in a circulating fluidized bed riser was numerically simulated. The distributions of the time-averaged solid phase density and the particle mass flow rate along radial direction, and the distributions of the particle concentration, the riser pressure drop and the particle clusters along the axial direction were observed. Compared with the results obtained by energy-minimization multi-scale drag force model, the particle concentration obtained by the modified drag force model with MECST could be reduced, which led to the low particle granular temperature.关键词
提升管/欧拉-欧拉双流体模型/颗粒悬浮输送能量最小曳力模型/颗粒团聚物/数值模拟Key words
riser/ Euler-Euler two-fluid model/drag force model with the minimal energy consumption for suspending and transporting/ particle cluster/ numerical simulation分类
化学化工引用本文复制引用
沈志恒,李巍,张慧芳,陆慧林..基于MECST气固相间曳力模型的气体-颗粒团聚物流动特性的数值研究[J].石油化工,2011,40(12):1308-1315,8.
