A new method to predict high and low-temperature ignition delays under transient thermodynamic conditions and its experimental validation using a Rapid Compression-Expansion Machine

Abstract

A new method to predict high and low-temperature ignition delays under transient thermodynamic conditions and its experimental validation using a Rapid Compression-Expansion Machine.

Experimental validation of an alternative method to predict high and low-temperature ignition delays under transient thermodynamic conditions for PRF mixtures using a Rapid Compression-Expansion Machine

“…The predictive procedure proposed by Desantes et al [20] is composed by two different consecutive integrals:…”

“…where t i,CC is the ignition delay of the process referred to a maximum con- A detailed description about the theoretical development that defines the method can be found in [19,20].…”

“…Therefore, the high exothermic phase of the ignition cannot be obtained, since the critical concentration occurs in a previous stage. Desantes et al [20] have also proposed an alternative method to predict both high-temperature stage and cool flames ignition delays under transient thermodynamic conditions, which is a previous work related to the current one. This alternative method has been validated for pure n-heptane and pure iso-octane.…”

Correlations for the ignition characteristics of six different fuels and their application to predict ignition delays under transient thermodynamic conditions

“…Obviously, there is a certain deviation between predictions andexperiments, independently of using information from the database or from the correlations. However, the accuracy of the predictions will not be shown in this paper, since it has been discussed by Desantes et al in[21][22][23].…”

“…Desantes et al [21,22] proposed an alternative integral method to predict both ignition delays, the one referred to cool flames and the other one referred to the high-temperature stage of the process. Such method is based on the accumulation and consumption of chain carriers to determine the time at which the critical concentration occurs.…”