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Methodology to Achieve Pseudo 1-D Combustion System of Polymeric Materials Using Low-Pressured Technique
- Source :
- Fire Technology. 56:229-245
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- This paper provides the methodology to achieve pseudo 1-D combustion system of specific polymeric materials without any complex physical effect (e.g., deformation, bubble bursting etc.) by adopting a low pressure technique with a fuel-layered approach. The adopted pressure level in this study is as low as 20 kPa and the size of the specimen is sub-millimeter scale. By utilizing pressure modeling to keep the Grashof number small, the gravity effect is relatively minimized at low pressure to mimic an ideal 1-D combustion process. A molten PMMA layer formed over a ceramic ball (suspended by thin SiC fiber) was used as the burning specimen to fulfil the purpose of this study. Results show that a spherical flame without any apparent bubble bursting is successfully achieved during the entire burning event when the pressure is sufficiently lower (~ 20 kPa) for both 20% and 30% ambient oxygen concentration. A well-known d-square law and pseudo steady burning process is confirmed at the post-ignition stage. Direct comparison of burning rate, K, between what was obtained in this study and that obtained under microgravity ensures that the present methodology is effective to simulate an ideal 1-D combustion system, just like one that can be achieved in microgravity, without the need for microgravity facilities.
- Subjects :
- 040101 forestry
Materials science
Grashof number
Combustion system
020101 civil engineering
04 agricultural and veterinary sciences
02 engineering and technology
Mechanics
Pressure level
0201 civil engineering
Bubble bursting
visual_art
Ball (bearing)
visual_art.visual_art_medium
0401 agriculture, forestry, and fisheries
General Materials Science
Gravity effect
Sic fiber
Ceramic
Safety, Risk, Reliability and Quality
Subjects
Details
- ISSN :
- 15728099 and 00152684
- Volume :
- 56
- Database :
- OpenAIRE
- Journal :
- Fire Technology
- Accession number :
- edsair.doi...........6f15469a9dcec7e0c4ce7810e41fca41