Yanwei Liang , Yongfeng Qu , Hongbo Xu , Nan Peng , Jean-Michel Ghidaglia , Liqiang Liu , Jiansheng Zuo , Hongmin Liu , Changlei Ke , Kongrong Li
{"title":"Numerical simulation of air wall protection performance during liquid hydrogen leakage and analysis of key influencing factors","authors":"Yanwei Liang , Yongfeng Qu , Hongbo Xu , Nan Peng , Jean-Michel Ghidaglia , Liqiang Liu , Jiansheng Zuo , Hongmin Liu , Changlei Ke , Kongrong Li","doi":"10.1016/j.cryogenics.2025.104207","DOIUrl":null,"url":null,"abstract":"<div><div>Liquid hydrogen is often the most suitable choice for both storage and transportation in various situations. However, once a leak occurs, liquid hydrogen will rapidly evaporate into gaseous hydrogen, causing significant potential hazards. Therefore, it is crucial to study measures to improve the safety of liquid hydrogen use. This paper proposes a method called “air wall.” A comparison between the traditional bund wall system and the air wall show that the air wall offers more effective protection. Analysis of the airflow speed of the<!--> <!-->air wall reveals that higher airflow speeds enhance protective effects. By adjusting the activation time of the air wall, it was found that there is no need for continuous operation; activating the air wall before the arrival of hydrogen can also provide effective protection. The size of the air wall was also studied, and it was found that at the same air flow velocity, smaller air walls provide poorer protection. Finally, the impact of various atmospheric wind speeds on the air wall was analyzed, and it was found that the higher wind speed, the greater air wall speed for effective protection. This protective method is expected to be widely implemented in liquid hydrogen storage areas.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"152 ","pages":"Article 104207"},"PeriodicalIF":2.1000,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cryogenics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0011227525001869","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
Liquid hydrogen is often the most suitable choice for both storage and transportation in various situations. However, once a leak occurs, liquid hydrogen will rapidly evaporate into gaseous hydrogen, causing significant potential hazards. Therefore, it is crucial to study measures to improve the safety of liquid hydrogen use. This paper proposes a method called “air wall.” A comparison between the traditional bund wall system and the air wall show that the air wall offers more effective protection. Analysis of the airflow speed of the air wall reveals that higher airflow speeds enhance protective effects. By adjusting the activation time of the air wall, it was found that there is no need for continuous operation; activating the air wall before the arrival of hydrogen can also provide effective protection. The size of the air wall was also studied, and it was found that at the same air flow velocity, smaller air walls provide poorer protection. Finally, the impact of various atmospheric wind speeds on the air wall was analyzed, and it was found that the higher wind speed, the greater air wall speed for effective protection. This protective method is expected to be widely implemented in liquid hydrogen storage areas.
期刊介绍:
Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are:
- Applications of superconductivity: magnets, electronics, devices
- Superconductors and their properties
- Properties of materials: metals, alloys, composites, polymers, insulations
- New applications of cryogenic technology to processes, devices, machinery
- Refrigeration and liquefaction technology
- Thermodynamics
- Fluid properties and fluid mechanics
- Heat transfer
- Thermometry and measurement science
- Cryogenics in medicine
- Cryoelectronics