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

K-ε-T Model of Dense Liquid-Solid Two-Phase Turbulent Flow and Its Application to the Pipe Flow

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 。

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.