A MODEL FOR THE AUTOIGNITION OF SINGLE LIQUID DROPLETS AT HIGH PRESSURE

Authors
  1. Ruszalo, R.
  2. Hallett, W.L.H.
Corporate Authors
Ottawa Univ, Ottawa ONT (CAN) Dept of Chemical Engineering;Ottawa Univ, Ottawa ONT (CAN) Dept of Mechanical Engineering;Chief of Research and Development, Ottawa ONT (CAN) Director Research and Development Air
Abstract
A numerical model for the ignition of single droplets of liquid hydrocarbons at high pressures is presented, which solves the governing equations by finite difference techniques and uses the Peng-Robinson equation of state to describe vapour-liquid equilibrium at the droplet surface. Ignition delay times are found to decrease substantially at high pressures, but no fundamental changes in the phenomena of ignition are observed either for pure fuels or two-component mixtures. The droplet does not reach the thermodynamic critical state prior to ignition, and the effect of air absorption and transport in the liquid phase on ignition time are found to be negligible.
Date of publication
01 Jan 1992
Number of Pages
31
DSTKIM No
92-00065
CANDIS No
102967
Format(s):
Hardcopy;Originator's fiche received by DSIS

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