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

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

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

[1]	Crow C T.Review-Numerical models for dilute gas-particle flows[J].ASME J Fluids Eng,1982,104(3):2 97～303.
[2]	Rizk M A.Elghobaski S E.A two-equation turbulence model for dispersed dilute confined two-phase flows[J].Int J Multiphase Flow,1989,15(1):119～133.
[3]	魏进家.密相液固两相湍流KET模型和数值计算及离凡泵叶轮内两相流场实验研究[D].博士学位论文.西安:西安交通大学,1998.
[4]	Shih T H,Zhu J,Lumley J L.Calculation of wall-bounded complex flows and free shear flows[J].Int J Numerical Methods in Fluids,1996,23(11):1133～1144.
[5]	Alajbegovic A,Assab A,Bondeppo F,et al.Phase distribution and turbulence structure for solid-fluid upflow in apipe[J].J Multiphase Flow,1994,20(3):453～479.
[6]	魏进家,姜培正,王长安.气固两相湍流中气体湍流强度的研究[J].西安交通大学学报,1998,32(1):72～75.

点击查看大图