关键词: 提升管, 气固流动, 双流体模型, 计算模拟

Abstract: An advanced hydrodynamic model, k–e–kp–ep–Q two-fluid model based on the kinetic theory of granular flow, is established to simulate the gas–solid turbulent flow in a riser reactor. For both gas and solid phases, the turbulence is simulated by the k–e model of low Reynolds number, and the kinetic theory of granular flow is adopted to model the collision of particles. This model is coded and solved by CFX software, a widely applied CFD tool, to simulate the cold gas–solid flow in a riser with 0.418 m ID and 18 m height. The predicted results show satisfactory agreement with experimental data, which indicates that the consideration of the turbulent motion and interaction between gas and solid is reasonable and bears significance in analyzing the turbulent gas–solid flow.

Key words: riser, gas–solid flow, two-fluid model, numerical simulation