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탄화수소 연료 액적의 연소 특성에 관한 수치해석

A Numerical Study of Combustion Characteristics of Hydrocarbon Fuel Droplet

  • 이봉수 (한국항공대학교 항공우주 및 기계공학과) ;
  • 이경재 (한국항공대학교 항공우주 및 기계공학과) ;
  • 김종현 (경원전문대학 자동차학과) ;
  • 구자예 (한국항공대학교 항공우주 및 기계공학과)
  • 발행 : 2003.11.01

초록

Droplet combustion at high ambient pressures is studied numerically by formulating one dimensional combustion model in the mixture of n-heptane fuel and air. The ambient pressure is supercritical conditions. The modified Soave-Redlich-Kwong state equation is used in the evaluation of thermophysical properties to account for the real gas effect on fluid p-v-T properties in high pressure conditions. Non-ideal thermodynamic and transport property at near critical and supercritical conditions are also considered. Several parametric studies are performed by changing ambient pressure and initial droplet diameter. Droplet lifetime decreased with increasing pressure. Surface temperature increased with increasing pressure. Ignition time increased with increasing initial droplet diameter. Temporal or spatial distribution of mass fraction, mass diffusivity, Lewis number, thermal conductivity, and specific heat were presented.

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참고문헌

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