Simulation Study on Aircraft Fire Extinguishing Pipeline with Different Filling Conditions and Pipeline Characteristics
The filling conditions and pipeline characteristics of the aircraft fire extinguishing system determine the pressure of the fire extinguishing cylinder outlet, the discharge quality of the extinguishing agent, and the flow distribution during the discharge process. The simulation model of the fire e...
| Główni autorzy: | , , , , , , |
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| Format: | Artykuł |
| Język: | English |
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MDPI AG
2022-06-01
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| Seria: | Fire |
| Hasła przedmiotowe: | |
| Dostęp online: | https://www.mdpi.com/2571-6255/5/4/86 |
| _version_ | 1827600065676443648 |
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| author | Rulin Liu Changyu Yuan Weitong Ma Shaonan Liu Song Lu Heping Zhang Jun Gong |
| author_facet | Rulin Liu Changyu Yuan Weitong Ma Shaonan Liu Song Lu Heping Zhang Jun Gong |
| author_sort | Rulin Liu |
| collection | DOAJ |
| description | The filling conditions and pipeline characteristics of the aircraft fire extinguishing system determine the pressure of the fire extinguishing cylinder outlet, the discharge quality of the extinguishing agent, and the flow distribution during the discharge process. The simulation model of the fire extinguishing system pipeline of an aircraft was established by Amesim. The influence of filling conditions and pipeline characteristics was studied. It was found that the mass curves of the fire extinguishing agent were similar under filling pressures of 4, 5, and 6 MPa with a filling amount of 5.55 kg. The lower the initial temperature is, the pressure at the outlet of the cylinder decreases, but the emptying time is similar to 1.22 s. The lower the roughness is, the faster the discharge is. Under the ideal smooth pipe (ε = 0 mm), the emptying time of the fire extinguishing cylinder is 0.72 s. When the diameter of the short branch pipe is 10 mm, and the diameter of the long branch pipe is 14 mm, the discharge quality of the two pipes is close. The larger the diameter of the main pipe, the higher the discharge rate. The research results have a certain guiding significance for the pipeline design of certain aircraft. |
| first_indexed | 2024-03-09T04:28:41Z |
| format | Article |
| id | doaj.art-58ae2497289d4d00a72bc06d830d0d8a |
| institution | Directory Open Access Journal |
| issn | 2571-6255 |
| language | English |
| last_indexed | 2024-03-09T04:28:41Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fire |
| spelling | doaj.art-58ae2497289d4d00a72bc06d830d0d8a2023-12-03T13:38:15ZengMDPI AGFire2571-62552022-06-01548610.3390/fire5040086Simulation Study on Aircraft Fire Extinguishing Pipeline with Different Filling Conditions and Pipeline CharacteristicsRulin Liu0Changyu Yuan1Weitong Ma2Shaonan Liu3Song Lu4Heping Zhang5Jun Gong6State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, ChinaState Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, ChinaState Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, ChinaState Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, ChinaState Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, ChinaState Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, ChinaChengdu Aircraft Design Institute, Chengdu 610091, ChinaThe filling conditions and pipeline characteristics of the aircraft fire extinguishing system determine the pressure of the fire extinguishing cylinder outlet, the discharge quality of the extinguishing agent, and the flow distribution during the discharge process. The simulation model of the fire extinguishing system pipeline of an aircraft was established by Amesim. The influence of filling conditions and pipeline characteristics was studied. It was found that the mass curves of the fire extinguishing agent were similar under filling pressures of 4, 5, and 6 MPa with a filling amount of 5.55 kg. The lower the initial temperature is, the pressure at the outlet of the cylinder decreases, but the emptying time is similar to 1.22 s. The lower the roughness is, the faster the discharge is. Under the ideal smooth pipe (ε = 0 mm), the emptying time of the fire extinguishing cylinder is 0.72 s. When the diameter of the short branch pipe is 10 mm, and the diameter of the long branch pipe is 14 mm, the discharge quality of the two pipes is close. The larger the diameter of the main pipe, the higher the discharge rate. The research results have a certain guiding significance for the pipeline design of certain aircraft.https://www.mdpi.com/2571-6255/5/4/86aircraft fire extinguishingone-dimensional simulationAmesimfilling conditionspiping characteristics |
| spellingShingle | Rulin Liu Changyu Yuan Weitong Ma Shaonan Liu Song Lu Heping Zhang Jun Gong Simulation Study on Aircraft Fire Extinguishing Pipeline with Different Filling Conditions and Pipeline Characteristics Fire aircraft fire extinguishing one-dimensional simulation Amesim filling conditions piping characteristics |
| title | Simulation Study on Aircraft Fire Extinguishing Pipeline with Different Filling Conditions and Pipeline Characteristics |
| title_full | Simulation Study on Aircraft Fire Extinguishing Pipeline with Different Filling Conditions and Pipeline Characteristics |
| title_fullStr | Simulation Study on Aircraft Fire Extinguishing Pipeline with Different Filling Conditions and Pipeline Characteristics |
| title_full_unstemmed | Simulation Study on Aircraft Fire Extinguishing Pipeline with Different Filling Conditions and Pipeline Characteristics |
| title_short | Simulation Study on Aircraft Fire Extinguishing Pipeline with Different Filling Conditions and Pipeline Characteristics |
| title_sort | simulation study on aircraft fire extinguishing pipeline with different filling conditions and pipeline characteristics |
| topic | aircraft fire extinguishing one-dimensional simulation Amesim filling conditions piping characteristics |
| url | https://www.mdpi.com/2571-6255/5/4/86 |
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