摘要
分析了从模型建立到输出过程中的误差来源,得出概念模型误差来源极大依靠资料的详实程度,三维的数学模型仿真程度最高,数值模型是将数学模型的精确解转化为近似解的过程,存在着不可避免的截断误差,模型构建过程中由于剖分尺度的不同而产生误差的程度不同,模型输入过程中定解条件和各项参数的选取较大影响了模型的输出精度。
The article analyzes the error sources from process of the building numerical model,it is shown that the conceptual model errors greatly depend on collected information,three-dimensional mathematical model has more advantages than others in improving the accuracy of simulation,numerical model has truncation error because the mathematical model should convert the exact solution into approximate solution,the error of subdivision model is due to the existence of different mesh size,model input including boundary conditions and selection of the parameters greatly affect the accuracy of the model output.
出处
《地下水》
2011年第3期3-4,79,共3页
Ground water
基金
"十一五"国家科技支撑计划重点项目(2007BAK24B04)
