论文部分内容阅读
分别采用线性最小二乘法拟合和单纯形寻优拟合计算氧在水中吸收的物理传质系数。单纯形法是将吸收全过程的溶解氧浓度-时间曲线数据进行拟合,比前者只采用吸收初期的实验数据拟合精度更高,同时可避免浓度-时间数据需符合线性关系的限制。MATLAB软件可快速实现单纯形最优值搜索。
The coefficients of mass transfer of oxygen absorbed in water were calculated by linear least square fitting and simplex fitting respectively. Simplex method is to absorb the whole process of the dissolved oxygen concentration - time curve data fitting, compared with the former using only the absorption of the experimental data fitting accuracy is higher, while avoiding the concentration - time data to be consistent with the linear relationship between the restrictions. MATLAB software can quickly achieve simplex optimal search.