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CN 34-1054/N

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Combustion of n-heptane in porous inert medium

  • Department of Thermal Science and Energy Engineering of University of Science and Technology of China, Hefei 230027, China

Cite this: JUSTC, 2009, 39(1): 50-56
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  • Received Date: January 07, 2007
  • Revised Date: April 06, 2008
  • Published Date: January 30, 2009
    Abstract
  • Application of porous inert medium (PIM) to internal combustion engines(ICE) promises high efficiency, low emissions and general practicability. The constant volume ignition of n-heptane droplets in PIM was simulated by a zero dimensional model using detailed chemical kinetics. Empirical relations for heat and mass transfer coefficients were used in the model, and Raoults law was employed to account for chemical equilibrium at the droplet surface. A homogeneous isotropic black-body radiation was assumed within PIM. Under normal conditions, PIM remained at a nearly constant temperature. Results show that PIM can drastically reduce the ignition delay time. This is of great benefit to ignition control of ICEs. Rate-of-pressure-rise can also be reduced, leading to a relatively low noise level. Emissions are, in general, relatively low.
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