Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6636411 | Fuel | 2015 | 8 Pages |
Abstract
The characteristics of flame propagations and gas explosions in propane/air mixtures were studied in a 1.16Â m3 explosion chamber with two quartz glass windows of 250Â mm diameter. The outward propagations of the spherical flame were recorded by the Schlieren system and high speed motion analysis system. The pressure and temperature histories of the explosion process were measured by pressure sensors and platinum-rhodium thermal couples of 0.02Â mm diameter mounted on the wall of the experimental chamber. The instabilities of the propane air flame with different equivalence ratio flame were observed and the critical radii of flame instability onset were obtained. The laminar burning velocities of propane air mixture were obtained by analyzing the experimental results of Schlieren system by using outwardly propagating spherical method. The variation of laminar burning velocity with equivalence ratio was studied. Pressure and temperature responses of the gas explosion were obtained and analyzed. The variations of the maximum overpressure and the maximum temperature with equivalence ratio were obtained and discussed. In propane/air mixture with an equivalence ratio near 1.8, two explosions take places.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Qingming Liu, Yunming Zhang, Fang Niu, Lei Li,