密相液固两相湍流<em>K</em>-ε-<em>T</em>模型及其在管道两相流中的应用

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密相液固两相湍流K-ε-T模型及其在管道两相流中的应用

基金项目: 国家自然科学基金资助项目(19272053);航空基础科学基金资助项目(99C53033)

1.
802 Division, Northwestern Polytechnical University, Xi'an 710072, P. R. China;
2.
Chemical Machinery and Equipment Department, Xi'an Jiaotong University, Xi'an 710049, P. R. China

摘要: 为了准确预测密相液固两相湍流流动,建立了K-ε-T模型,推导了控制方程组.利用该模型对竖直上升管中的密相液固两相流动进行了数值模拟,得到了与实验值吻合较好的结果
- 密相 /
- 液固两相 /
- 湍流 /
- K-ε-T模型
Abstract: To predict the characteristics of dense liquid-solid two-phase flow, K-ε-T model is established, in which the turbulent flow of fluid phase is described with fluid turbulent kinetic energy K_f and its dissipation rate ε_f, and the particles random motion is described with particle turbulent energy K_p and its dissipation rate ε_p and pseudothermal temperature T_p. The governing equations are also derived. With K-ε-T model, numerical study of dense liquid-solid two-phase turbulent up-flow in a pipe is performed. The calculated results are in good agreement with experimental data of Alajbegovic et al. (1994), and some flow features are captured.
- dense /
- liquid-solid two-phase /
- turbulent flow /
- K-ε-T model

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