摘要
本文采用数值方法分析了有突扩角的电孤等离子体反应器内流动和传热特点。流动是稳定轴对称的湍流流动,无反应无辐射。考虑了流体热力学性质随温度的变化。计算中采用了κ—ε双方程湍流模型、交错网格、混合差分格式,壁面函数等较为先进的数值方法。计算程序通用性强,适用于突扩角0～90度各种几何尺寸的反应器。输入反应器的几何参数和系统的操作参数,就可以得到不同情况下反应器的流场、温度场。
In this paper, a mathematical model is proposed to simulate the fluid flow and heat transfer of the thermal plasma in a reactor. The tubular reactor is the main model used for inorganic superfine powder production by plasma method. This work is restricted to axisymmetric steady turbulent flow of nonreacting and nonradiating medium in the reactor. The geometry consists of a cylinder and a truncated cone at the inlet. Variation of thermodynamic properties with temperature are included in the consideration. Two-equation model of turbulence, staggered grid, hybrid scheme, wall functions and other advanced numerical methods are used in this numerical simulation. The computation gives the predicted flow and temperature fields, which supplement to the direct measurements at high temperature and serve as worthwhile reference for purposes of design and operation.
出处
《化工冶金》
CSCD
北大核心
1990年第4期283-288,共6页
关键词
等离子体
反应器
传热
数学模型
Plasma reactor Fluid flow Heat transfer Flow field Temperature field Mathematical model
