The effect of diluent on flame structure and laminar burning speeds of JP-8/oxidizer/diluent premixed flames |
| |
Authors: | Kian Eisazadeh-Far Hameed Metghalchi James C Keck |
| |
Affiliation: | a Northeastern University, Boston, MA 02115, USA b Massachusetts Institute of Technology, Cambridge, MA 02139, USA |
| |
Abstract: | Experimental studies have been performed to investigate the flame structure and laminar burning speed of JP-8/oxidizer/diluent premixed flames at high temperatures and pressures. Three different diluents including argon, helium, and a mixture of 14% CO2 and 86% N2 (extra diluent gases), were used. The experiments were carried out in two constant volume spherical and cylindrical vessels. Laminar burning speeds were measured using a thermodynamics model based on the pressure rise method. Temperatures from 493 to 700 K and pressures from 1 to 11.5 atm were investigated. Extra diluent gases (EDG) decrease the laminar burning speeds but do not greatly impact the stability of the flame compared to JP-8/air. Replacing nitrogen in the air with argon and helium increases the range of temperature and pressure in the experiments. Helium as a diluent also increases the temperature and pressure range of stable flame as well as the laminar burning speed. Power law correlations have been developed for laminar burning speeds of JP-8/air/EDG and JP-8/oxygen/helium mixtures at a temperature range of 493-700 K and a pressure range of 1-10 atm for lean mixtures. |
| |
Keywords: | JP-8 Laminar burning speed Combustion instability Diluent |
本文献已被 ScienceDirect 等数据库收录! |
|