确定固液两相流扩散系数的投影寻踪模型

Project pursuit regression model for diffusion coefficient of suspended particles in liquid-solid two-phase flow

本文首先指出传统方法在研究悬移质扩散系数时存在的问题及困难 ;根据两相流理论确定出影响悬移质扩散系数的 3个主要因子 ,并沿着“审视数据—模拟—预测”的途径 ,建立了固液两相流中悬移质扩散系数的投影寻踪回归 ( PPR)数学模型。模拟结果表明本文所建立的模型稳健性和抗干扰性好 ,预测精度较高。

WT5”BZ]In this paper, the problems and difficulties with regard to diffusion coefficient of suspended particles in two phase flows were pointed out. Three main factors affecting it were given according to the two phase flow theory. A project pursuit regression (PPR) model for the diffusion coefficient of suspended particles in liquid solid two phase flow was established. It is shown that the steadiness and anti disturbance of this model are satisfactory and the prediction precision is rather high. [WT5HZ]