南昌工程学院学报2024，Vol.43Issue(1)：27-33,7.
基于降阶投影的初始渗流场反演方法
Inversion method of initial seepage field based on reduced order projection
摘要
Abstract
In order to solve the time-consuming problem of traditional parameter inversion based on reduced order models,this study proposes an improved reduced order inversion method(IterROM)for performing fast parameter inversion tasks.Unlike the traditional reduced order inversion method,which trains first and then inverts,this method tightly integrates pa-rameter inversion with reduced order model training,that is,using the reduced order model in training to replace the original model for parameter inversion,and applying the inversion results to the training of the reduced order model.This method u-ses observation data and a posterior error to form the objective function during the parameter inversion stage,and uses the maximum node error between the reduced order model solution and the full order model solution as the iteration termination accuracy.After testing the initial seepage field inversion model of a certain project,it was found that IterROM has higher ac-curacy and lower computational cost compared with traditional methods,and it can be used to quickly perform the inversion task of the initial seepage field.关键词
初始渗流场/降阶模型/参数反演/优化算法/渗透系数Key words
initial seepage field/reduced order model/parameter inversion/optimization algorithm/permeability coefficient分类
建筑与水利引用本文复制引用
钱武文,赵新宇,陈柏全,杜保宏,赵锐,吴邦彬,李双龙..基于降阶投影的初始渗流场反演方法[J].南昌工程学院学报,2024,43(1):27-33,7.基金项目
江西省教育厅科学技术研究项目(GJJ201922,GJJ190968,GJJ2201501) （GJJ201922,GJJ190968,GJJ2201501）
