A fundamental study has been performed on the upstream flame propagation of a turbulent kerosene flame, stabilized in a confined stagnation flow at atmospheric pressure. Besides temperature and equivalence ratio, mixture properties and fluid dynamic parameters have been varied. The flashback phenomenon is discussed in terms of critical mean velocities and additionally based on detailed LDV data at the outlet of the premixing duct. The largest critical velocities for flashback are found for the “perfectly” premixed case and equivalence ratios close to stoichiometric, which is in accordance with the theory on laminar flame propagation. In the case of a homogeneous mixture, flashback is determined by the velocity distribution at the outlet of the premixing section. In the undisturbed pipe flow the flame propagates through the wall boundary layer. The data for this case are compared with the theory of side-wall quenching in terms of a critical Peclet number and critical velocity gradients at the wall. Both are deduced from the experimental data. Reducing the velocity on the axis forces the flame to propagate through the center at a velocity predicted by correlations on turbulent flame velocity.
Skip Nav Destination
e-mail: olaf.Schaefer@its.uni-karlsruhe.de
Article navigation
July 2003
Technical Papers
Flashback in Lean Prevaporized Premixed Combustion: Nonswirling Turbulent Pipe Flow Study
O. Scha¨fer,
e-mail: olaf.Schaefer@its.uni-karlsruhe.de
O. Scha¨fer
Institute of Thermal Turbomachinery, Department of Mechanical Engineering, University of Karlsruhe, Kaiserstrasse 12, 76128 Karlsruhe, Germany
Search for other works by this author on:
R. Koch,
R. Koch
Institute of Thermal Turbomachinery, Department of Mechanical Engineering, University of Karlsruhe, Kaiserstrasse 12, 76128 Karlsruhe, Germany
Search for other works by this author on:
S. Wittig
S. Wittig
Institute of Thermal Turbomachinery, Department of Mechanical Engineering, University of Karlsruhe, Kaiserstrasse 12, 76128 Karlsruhe, Germany
Search for other works by this author on:
O. Scha¨fer
Institute of Thermal Turbomachinery, Department of Mechanical Engineering, University of Karlsruhe, Kaiserstrasse 12, 76128 Karlsruhe, Germany
e-mail: olaf.Schaefer@its.uni-karlsruhe.de
R. Koch
Institute of Thermal Turbomachinery, Department of Mechanical Engineering, University of Karlsruhe, Kaiserstrasse 12, 76128 Karlsruhe, Germany
S. Wittig
Institute of Thermal Turbomachinery, Department of Mechanical Engineering, University of Karlsruhe, Kaiserstrasse 12, 76128 Karlsruhe, Germany
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, New Orleans, LA, June 4–7, 2001; Paper 2001-GT-0053. Manuscript received by IGTI, Dec. 2000, final revision, Mar. 2001. Associate Editor: R. Natole.
J. Eng. Gas Turbines Power. Jul 2003, 125(3): 670-676 (7 pages)
Published Online: August 15, 2003
Article history
Received:
December 1, 2000
Revised:
March 1, 2001
Online:
August 15, 2003
Citation
Scha¨fer, O., Koch , R., and Wittig, S. (August 15, 2003). "Flashback in Lean Prevaporized Premixed Combustion: Nonswirling Turbulent Pipe Flow Study ." ASME. J. Eng. Gas Turbines Power. July 2003; 125(3): 670–676. https://doi.org/10.1115/1.1581897
Download citation file:
Get Email Alerts
Blade Excitation Alleviation of a Nozzleless Radial Turbine by Casing Treatment Based on Reduced Order Mode
J. Eng. Gas Turbines Power
Design And Testing of a Compact, Reverse Brayton Cycle, Air (R729) Cooling Machine
J. Eng. Gas Turbines Power
Experimental Study on Liquid Jet Trajectory in Cross Flow of Swirling Air at Elevated Pressure Condition
J. Eng. Gas Turbines Power
Related Articles
Propagation of Turbulent Natural Gas/Air Flames in Tubing With 90° Bends
J. Energy Resour. Technol (December,2003)
Three-Stream Flamelet Model for Industrial Applications
J. Eng. Gas Turbines Power (June,2010)
A Critical Evaluation of NO x Modeling in a Model Combustor
J. Eng. Gas Turbines Power (July,2005)
3D RANS Simulation of Turbulent Flow and Combustion in a 5 MW Reverse-Flow Type Gas Turbine Combustor
J. Eng. Gas Turbines Power (November,2010)
Related Proceedings Papers
Related Chapters
The Identification of the Flame Combustion Stability by Combining Principal Component Analysis and BP Neural Network Techniques
International Conference on Mechanical Engineering and Technology (ICMET-London 2011)
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Heat Generated in Pipe Flows Due to Friction
Everyday Heat Transfer Problems: Sensitivities to Governing Variables