Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session KP1: Poster Session (3:20-4:05pm)
Monday, November 19, 2018
Georgia World Congress Center Room: Level 1, Exhibit Hall B2 by the GFM videos
Abstract ID: BAPS.2018.DFD.KP1.99
Abstract: KP1.00099 : Multi-scale Modeling of Ignition Damkohler Number Effect on Cool Flame Propagation at Elevated Temperature and Pressure Using n-Heptane/Air Mixture*
Laminar cool flame propagation speed at elevated temperature and pressure is fundamentally important in many research areas such as knocking control in advanced engines, and it provides one of the most important reference numbers to characterize and model combustion process. However, the laminar cool flame speed especially at high ignition Damkohler number is a challenging task since it is no more the classical eigenvalue problem and need to be reconsidered. The current study proposed a new numerical method to measure cool flame speed at elevated temperature and pressure with a wide range of ignition Damkohler number. The primary focus of the current study is on the effects of pressure, temperature, equivalence ratio and ignition Damkohler number. The results show that the laminar cool flame speed increases with temperature before and after the negative temperature coefficient(NTC) region. While inside NTC region, the laminar cool flame speeds decreases with higher temperature due to the inhibited low temperature chemistry. In addition, the peak laminar cool flame speed increases with the pressure due to the cross-over temperature change.
*Thank the U.S. Army Research Office for grant number W911NF-16-1-0076.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.KP1.99
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700