Rapid identification of single constant contaminant source by considering characteristics of real sensors

作     者：蔡浩 李先庭 孔令娟 马晓钧 邵晓亮 

作者机构：Department of Building ScienceSchool of ArchitectureTsinghua University Engineering Institute of Engineering CorpsPLA University of Science&Technology Nanjing Artillery Academy 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2012年第19卷第3期

页      面：593-599页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 080202[工学-机械电子工程] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0802[工学-机械工程] 0713[理学-生态学] 

基　　金：Project(50908128) supported by the National Natural Science Foundation of China Project(51125030) supported by the National Science Foundation for Distinguished Young Scholars in China 

主　　题：source identification contaminant source indoor environment computational fluid dynamics (CFD) air distribution 

摘      要：For the release of hazardous contaminant indoors, source identification is critical for developing effective response measures. A method which can quickly and accurately identify the position, emission rate, and release time of a single constant contaminant source by using real sensors was presented. The method was numerically demonstrated and validated by a case study of contaminant release in a three-dimensional office. The effects of the measurement errors and total sampling period of sensor on the performance of source identification were thoroughly studied. The results indicate that the adverse effects of the measurement errors can be mitigated by extending the total sampling period. For reaching a desirable accuracy of source identification, the total sampling period should exceed a certain threshold, which can be determined by repeatedly running the identification method tmtil the results tend to be stable. The method presented can contribute to develop an onsite source identification system for protecting occupants from indoor releases.