Effect of Heat Flux on End of Fuel Droplet Evaporation in Diffusion Flame

拡散火炎中における微小燃料液滴の加熱速度が蒸発末期挙動に与える影響

In this study, fuel droplet of about 20μm diameter that is assumed to be in combustion chamber is injected by experimental apparatus. After that, droplet goes to high temperature atmosphere. The authors observed and experimentally considered that fuel droplet evaporation and self-explosion phenomenon. Heat flux was changed by initial velocity in this study. It was found that even if the heating rate is low, it shows self-explosion phenomenon in the diffusion flame when the distillation temperature of the fuel droplet decreases. Furthermore, the evaporation rate increased linearly as the initial velocity became faster, but it does not affect breakup diameter.内燃機関用噴霧に多く存在する直径約20μmの液滴を拡散火炎内に噴射し,その蒸発末期挙動を観察した.液滴に供給される熱量が蒸発および蒸発末期の分裂現象に与える影響を実験的に考察した.その結果,液滴の加熱速度が蒸発速度係数には影響を与えているが分裂液滴径には影響を与えていないことがわかった.

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  • English
  • Japanese

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  • Accession Number: 01679981
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jul 26 2018 3:02PM