Flame Structure Study and Laminar Burning Speed Calculation of JP8/Oxidizer and JPl0/Oxidizer Mixtures

摘要

Experimental studies on flame structures and burning speeds of JP8/Oxidizer and JP10/Oxidizer mixtures with several diluents have been performed. The experimental facilities consist of a spherical and a cylindrical vessel capable of high pressure and temperature combustion. The spherical chamber is used to record pressure rise due to combustion process which is used in the calculation of the burning speed. The cylindrical vessel is used to take movies of flame propagation with a high speed CMOS camera installed in a shadowgraph system. The camera has the capability of taking pictures up to 40,000 frames per second. A thermodynamic model was used to calculate burning speed using dynamic pressure rise in the spherical vessel. The effect of diluents such as Argon, Helium and Nitrogen on flame shape and burning speed has been studied at various pressures, temperatures and equivalence ratios. It has been observed that diluent type, equivalence ratio, temperature, and pressure have a great effect on burning speed and flame structure.