Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Numerical study on effects of the cofferdam area in liquefied natural gas storage tank on the leakage and diffusion characteristics of natural gas | |
| Lin, Zirong1,2,3; Wang, Shuangfeng2; Fu, Shuxun3; Huo, Jiepeng4 | |
| 2021 | |
| Source Publication | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| ISSN | 1004-9541 |
| Volume | 29Issue:1Pages:228-241 |
| Corresponding Author | Wang, Shuangfeng(sfwang@scut.edu.cn) |
| Abstract | The leakage and diffusion characteristics of natural gas were investigated in the condition of the leakage of liquefied natural gas (LNG) in the storage tank. Fluent was adopted to simulate the process in a series of three-dimension unsteady state calculations. The effects of different heights of the cofferdam (1.0 m, 2.0 m and 3.0 m), wind directions, ambient temperature, leakage location, leakage volume on the diffusion process of natural gas were investigated. The diffusion characteristics of the natural gas clouds over cofferdam were found. Under windless condition, when the gas clouds met, the gas clouds rose due to the collision, which made them easier to cross the cofferdam and spread out. The higher the ambient temperature was, the higher the gas concentration around the cofferdam was, and the smaller the gas concentration difference was. When the leakage occurred, the higher cofferdam was more beneficial to delay the outward diffusion of gas clouds. However, when the leakage stopped, the higher cofferdam went against the dissipation of gas clouds. Under windy condition, the time to form stable leakage flow field was faster than that of windless, and the lower cofferdam further reduced this time. Therefore, considering the effect of barrier and dissipation, it was suggested that the rational height of cofferdam should be designed in the range of 1.0m to 2.0m. In case of emergency, the leakage of gas should be deduced reasonably by combining the measurement of gas concentration with the rolling of gas clouds. When windless, the leakage area should be entered between the overflows of gas clouds. (C) 2020 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved. |
| Keyword | Natural gas Leakage and diffusion Cofferdam Numerical simulation |
| DOI | 10.1016/j.cjche.2020.07.049 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Funding for post-doctoral research in Foshan City |
| WOS Research Area | Engineering |
| Funding Organization | Funding for post-doctoral research in Foshan City |
| WOS Subject | Engineering, Chemical |
| WOS ID | WOS:000636564100028 |
| Publisher | CHEMICAL INDUSTRY PRESS CO LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/33074 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Wang, Shuangfeng |
| Affiliation | 1.Foshan Publ Util Holding Co Ltd, Foshan 528000, Guangdong, Peoples R China 2.South China Univ Technol, Guangzhou 510640, Guangdong, Peoples R China 3.Foshan Gas Grp Co Ltd, Foshan 528000, Guangdong, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China |
| Recommended Citation GB/T 7714 | Lin, Zirong,Wang, Shuangfeng,Fu, Shuxun,et al. Numerical study on effects of the cofferdam area in liquefied natural gas storage tank on the leakage and diffusion characteristics of natural gas[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2021,29(1):228-241. |
| APA | Lin, Zirong,Wang, Shuangfeng,Fu, Shuxun,&Huo, Jiepeng.(2021).Numerical study on effects of the cofferdam area in liquefied natural gas storage tank on the leakage and diffusion characteristics of natural gas.CHINESE JOURNAL OF CHEMICAL ENGINEERING,29(1),228-241. |
| MLA | Lin, Zirong,et al."Numerical study on effects of the cofferdam area in liquefied natural gas storage tank on the leakage and diffusion characteristics of natural gas".CHINESE JOURNAL OF CHEMICAL ENGINEERING 29.1(2021):228-241. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment