垂直管道浸取器连续相流动模型的参数确定  

On the Parameter Estimation of the Flow Pattern of Continuous Phase in Vertical Tubular Leacher

作　　者：邱康华[1] 黄世钊[1] 董毅宏[1] 李宽宏[2] 

机构地区：[1]广西大学化工系,530004 [2]华东化工学院,200237

出　　处：《广西大学学报（自然科学版）》1992年第4期14-20,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助的课题

摘　　要：介绍用最小二乘法进行时间域非线性回归求取轴向混和扩散系数的全过程。用矩量法求初值,用等步长法搜索,0.618法压缩区间,最后用三点抛物线法求得混和扩散系数。这种方法的计算速度快,结果精度高。It was introduced that how the mixed diffusion coefficient was estimated by non-linear regression with the least squares inthe time domain.The initial value of the es- timatcd parameter was given by momentum mcthod,then the range of the effective value was searched with step-by-step method and compressed by 0.618 method.The last value of the parameter was obtained through parabola fitting.The advantage of this program is short calculating time and high accuracy.

关 键 词：扩散系数 非线性回归 数学模型/垂直管道浸取器 

分 类 号：TQ028.96[化学工程]