文献类型：期刊文献

中文题名：垂直管道浸取器连续相流动模型的参数确定

英文题名：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：[1]广西大学化工系,530004;[2]华东化工学院,200237

年份：1992

卷号：17

期号：4

起止页码：14

中文期刊名：广西大学学报（自然科学版）

外文期刊名：Journal of Guangxi University（Natural Science Edition）

收录：CSTPCD;;CSCD:【CSCD_E2011_2012】；

基金：国家自然科学基金资助的课题

语种：中文

中文关键词：扩散系数;非线性回归;数学模型/垂直管道浸取器

外文关键词：diffusion coefficient;;non-linear regression;;mathematical models/vertical tubular leacher

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.