A Numerical Simulation of Gas-Particle Two-Phase Flow in a Suspension Bed Using Diffusion Flux Model

Abstract

Abstract: A mathematical model of two-dimensional turbulent gas-particle two-phase flow based on the
modified diffusion flux model (DFM) and a numerical simulation method to analyze the gas-
particle flow structures are developed. The modified diffusion flux model, in which the
acceleration due to various forces is taken into account for the calculation of the
diffusion velocity of particles, is applicable to the analysis of multi-dimensional gas-
particle two-phase turbulent flow. In order to verify its accuracy and efficiency, the
numerical simulation by DFM is compared with experimental studies and the prediction by κ-
ε-κp two-fluid model, which shows a reasonable agreement. It is confirmed that the
modified diffusion flux model is suitable for simulating the multi-dimensional gas-particle
two-phase flow.

Key words: diffusion flux model, gas-solid two-phase flow, turbulent flow, numerical simulation

摘要： A mathematical model of two-dimensional turbulent gas-particle two-phase flow based on the
modified diffusion flux model (DFM) and a numerical simulation method to analyze the gas-
particle flow structures are developed. The modified diffusion flux model, in which the
acceleration due to various forces is taken into account for the calculation of the
diffusion velocity of particles, is applicable to the analysis of multi-dimensional gas-
particle two-phase turbulent flow. In order to verify its accuracy and efficiency, the
numerical simulation by DFM is compared with experimental studies and the prediction by κ-
ε-κp two-fluid model, which shows a reasonable agreement. It is confirmed that the
modified diffusion flux model is suitable for simulating the multi-dimensional gas-particle
two-phase flow.

关键词: diffusion flux model;gas-solid two-phase flow;turbulent flow;numerical simulation

SHANG Zhi, YANG Ruichang, FUKUDA Kenji, ZHONG Yong, JU Zejian. A Numerical Simulation of Gas-Particle Two-Phase Flow in a Suspension Bed Using Diffusion
Flux Model[J]. .

尚智, 杨瑞昌, FUKUDA Kenji, 钟勇, 巨泽建. 用扩散流动模型分析悬浮床内的气固两相向上流动[J]. CIESC Journal.

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A Numerical Simulation of Gas-Particle Two-Phase Flow in a Suspension Bed Using Diffusion
Flux Model

用扩散流动模型分析悬浮床内的气固两相向上流动

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