文献类型：期刊文献

英文题名：Impact analysis of multi-sensor layout on the source term estimation of hazardous gas leakage

作者：Dong, Jikai[1];Du, Wenli[1];Wang, Bing[1];Cao, Chenxi[1];Chen, Shikuan[1];Xu, Qiaoyi[1]

机构：[1]East China Univ Sci & Technol, Key Lab Smart Mfg Energy Chem Proc, Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：73

外文期刊名：JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES

收录：;EI(收录号：20213010688232);WOS:【SCI-EXPANDED(收录号:WOS:000693343900005)】；

基金：This work was supported by National Natural Science Foundation of China (Basic Science Center Program: 61988101), the International (Regional) Cooperation and Exchange Project (61720106008), National Natural Science Fund for Distinguished Young Scholars (61725301) and Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Leakage; Dual-layer sensor layout; Source term estimation; Turbulence condition

摘要：In chemical industry, sensors are used to monitor the leakage and emission of hazardous materials that are used for hazard warning and risk assessment to ensure safety production. The traditional sensor layout designs the scheme at single-layer, and thus causes large deviations in the estimated height and accuracy of source term estimation (STE). In this study, a dual-layer layout scheme for sensors is proposed. The numerical experiments verify that the improved schemes with an equal number of sensors, as well as detection errors, are beneficial to the accuracy of the STE results. The influence of the heights of the sensors and leak source on the results of STE is studied. Results show that the dual-layer sensor scheme with adjacent intervals at high places in the potential search space is highly favorable to locate the leak, and the scheme arranged near the ground is conducive for improving the estimation accuracy of source intensity. This study also compares the STE results of computational fluid dynamics (CFD) simulated scenarios under different sensor schemes and verifies the effectiveness of the proposed dual-layer sensor deployment scheme with adjacent intervals under turbulence condition.