Experimental study of flash atomization of binary hydrocarbon liquids

GEMCI t., Yakut K., CHIGIER N., HO T.

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, cilt.30, sa.4, ss.395-417, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 4
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/j.ijmultiphaseflow.2003.12.003
  • Dergi Adı: INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.395-417
  • Anahtar Kelimeler: binary hydrocarbon atomization, flash atomization, cavitation-enhanced atomization, drop size correlation, SPRAY FORMATION, CAVITATION, ENHANCEMENT, EVAPORATION, MECHANISM, INJECTION, MIXTURE, FLOW, JETS
  • Atatürk Üniversitesi Adresli: Evet

Özet

This paper aims to gain a better understanding of the flash atomization of a hydrocarbon solution containing n-hexadecane and n-butane, with nitrogen as the propellant gas. The nitrogen flow rate, injection temperature, and butane concentration were varied. Breakup pattern and spray quality were characterized by taking images at the nozzle exit. Mean droplet diameters were measured as a function of operating conditions. It is shown that the atomization of n-hexadecane can be significantly enhanced by using butane as a propellant liquid. For a given mean drop size, the presence of butane can markedly reduce the propellant-gas-to-liquid ratio. A simple and practical correlation for the Sauter mean diameter was developed, taking the form SMD (mum) = 118.4 - 28.3(DeltaT* - K) where DeltaT* and K are a dimensionless degree of superheating and the cavitation number, respectively. This correlation collapses all the data under diverse conditions into a single curve. (C) 2004 Elsevier Ltd. All rights reserved.