Experimental Analysis and Numerical Simulation of Ignition Delay Time of
Diesel Fuel Using a Shock Tube
Abstract
The present work consisted in developing computational routine for
prediction and characterization ignition delay time in shock tube. The
work was the development of computational routines to characterize the
shock wave parameters the ignition delay times of diesel to validate the
experimental tests carried out in shock tube conducted by Santana and
compare it with the experimental tests and numerical simulations carried
out by others authors available in the literature. A linear regression
of the experimental tests conducted by Santana et al [3] with
conventional diesel was performed to obtain the Arrhenius equation for
numerical simulation of the ignition delay time of diesel under the
following conditions: temperatures from 880 to 1300K, pressures 24 bar
and equivalence ratio 1. The results show good prediction between
experimental and simulations. Were found delay times ranging from 425 to
1890μs. Considering all temperature range, the difference between the
experimental and simulated test was approximately 15%, this difference
also can be explained by the measurement in the shock tube, that the
ignition delay time was calculated by the time difference between the
passage of the shock wave by the pressure sensor and the start of the
ignition detected by the luminosity detection sensor.