Discrepancies between shock-tube and rapid compression machine ignition at low temperatures and high pressures (original) (raw)

Shock Waves, Vol 1, Proceedings, 2009

Abstract

Ignition delay time data at elevated pressures and low-to-intermediate temperatures continue to be of interest because of their importance for the validation of chemical kinetics models at practical engine conditions. However, it has been noticed recently that shock-tube ignition data can disagree significantly with rapid compression machine (RCM) data at higher pressures and temperatures below about 1100 K. The basic trend is that the ignition delay times obtained from shock-tube experiments are faster than model predictions and data obtained in RCM’s over this lower-temperature region, sometimes by an order of magnitude or more.

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