Determination of Laminar Burning Speeds and Markstein Lengths of p-Cymene/Air Mixtures Using Three Models

Abstract

The aim of this article is to determine the laminar burning speeds and Markstein lengths of p-cymene. This fuel is emitted by a typical vegetal species of the Mediterranean region often involved in forest fires. Experiments are performed in a spherical vessel for different equivalence ratios ranging from 0.7 to 1.4 at 180 °C and at atmospheric pressure. The effect of temperature (85 to 180 °C) at the stoichiometry is also studied. Three models (one linear and two nonlinear) are used in the extraction process. Depending on the equivalence ratio, the more accurate models are adopted to determine the laminar burning speeds and Markstein lengths of p-cymene. Results are compared favorably to experimental values of a similar fuel (α-pinene) and to numerical data of n-decane computed using the in-house code A-SURF.

Keywords:

• Laminar flame speed
• p-Cymene
• Stretch