基于声学层析成像的温度场和流速场重构  

Reconstruction of temperature and flow velocity fields based on acoustic tomography

作　　者：刘艺璇 余俊辉 董晨龙[1,2] 徐涛 王海麟 周新志 LIU Yixuan;YU Junhui;DONG Chenong;XU Tao;WANG Haiin;ZHOU Xinzhi(College of Electronics and Information,Sichuan University,Intelligent Control Institute,Chengdu 610065,China;Key Laboratory of Reacter System Design Technology,Nuclear Power Institute of China,Chengdu 610213,China)

机构地区：[1]四川大学电子信息学院智能控制研究所,成都610065 [2]中国核动力研究设计院,核反应堆系统设计技术重点实验室,成都610213

出　　处：《智能计算机与应用》2024年第4期123-127,共5页Intelligent Computer and Applications

基　　金：核反应堆系统设计技术重点实验室基金资助(KFKT-05-FW-HT-20220019);中国核动力研究设计院联合基金资助(SCU&NPIC-LHCX-20)。

摘　　要：为有效重构三维管道内液体的温度场和流速场,提出了一种超声飞渡时间计算表征,并基于此求解温度场和流速场反演模型。同时考虑温度梯度导致的声线弯曲效应,采用正四面体前向展开法,追踪超声弯曲路径;开展“华龙一号”反应堆主管道冷却剂温度场和流速场重构实验。实验结果表明,所提方法能有效重构管道冷却剂温度场和流速场,且考虑弯曲效应能进一步提高重构精度。In order to effectively reconstruct the temperature and flow velocity fields of the liquid in a three-dimensional pipeline,a formula of the sound wave travel-time is proposed,and the temperature and flow velocity fields are solved based on it.At the same time,the sound wave refraction effect caused by the temperature gradient is considered to track the sound wave bending path.Experiments are carried out to reconstruct the temperature and flow velocity fields in the main pipe of the HPR1000 reactor.It is verified that the proposed method can effectively reconstruct temperature and flow velocity fields in the pipeline,and the accuracy of the reconstruction can be further improved by considering the bending effect.

关 键 词：声学层析成像 耦合场 温度场重构 流速场重构 弯曲效应 

分 类 号：TK311[动力工程及工程热物理—热能工程]