Experimental and Theoretical Studies of Autoignition and Burning Speed of JP8 and DF-2
Abstract
Experimental facilities have been built to measure burning speed, determine flame structure and observe auto-ignition of fuel/oxidizer/diluent for a wide range of pressure, temperature and fuel-air equivalence ratio. Experimental facilities include a spherical vessel and a cylindrical chamber. The spherical vessel is housed in an oven to increase initial temperature of the mixture to 500 K. The cylindrical chamber has two large windows at the end for flame observation. Dynamic pressure his has been measured during the combustion process in both vessels. A thermodynamic model has been developed to calculate burning speed from pressure data. The model is a very complicated one and is described in detail in the text. Laminar burning speeds of JP8-air, JP8-He-Oxygen and JP8-Ar-Oxygen mixtures at high temperatures and pressures have been measured and reported. A power law fit has been developed to correlate burning speed to temperature, pressure and fuel air equivalence ratio. In all cases the structures of the flames were studied qualitatively by a high speed CMOS camera set up in a shadowgraph optical system. Burning speeds of diesel-air mixtures were calculated at high temperatures and pressures and the structure of the flame was studied with shadowgraph system. The instability and cell formation analyses were performed for JP8-O2-diluent mixtures at high temperatures and pressures and different diluents.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 20, 2008
- Accession Number
- ADA500386
Entities
People
- Mohamad Metghalchi
Organizations
- Northeastern University