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- Title
Experimental investigation of combustion of ethanol-methylcellulose gel droplets with Al powder.
- Authors
Junyu Zhu; Akiyo Takahashi; Kenichi Takahashi
- Abstract
Understanding gel fuel combustion behavior is pivotally important for future engineering practice. This study experimentally investigated the combustion behavior of non-metallized and metallized gel droplets. Pure ethanol-methylcellulose gel was used to represent non-metallized gel. Mixed ethanol-methylcellulose gel with 10 % aluminum (Al) powder was used to represent metallized gel. Gel droplet combustion experiments were conducted at an initial ambient temperature of approximately 700 (±20) °C under an air convective condition. The initial diameter of droplets used for combustion experiments was 2.25 ± 0.11 mm. Observations revealed different combustion behaviors of non-metallized and metallized gel droplets. The combustion of metallized gel droplets exhibited a particular phenomenon: an Al agglomeration period before combustion ceased. This finding suggests that adding aluminum powder in ethanol-methylcellulose gel might reduce the droplet ignition delay time and might increase the droplet burning time, thereby allowing more energy to be released during combustion.
- Subjects
COMBUSTION; ALUMINUM powder; ETHANOL; POWDERS; AIR conditioning
- Publication
Science & Technology of Energetic Materials, 2022, Vol 83, Issue 5, p138
- ISSN
1347-9466
- Publication type
Article