1-20 of 20
Keywords: flames
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. September 2011, 133(3): 031002.
Published Online: September 6, 2011
... for stationary power generation. However, there are gaps in the fundamental understand of syngas combustion characteristics, especially at elevated pressures that are relevant to practical combustors. In this work, constant volume spherical expanding flames of three typical syngas compositions...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. June 2011, 133(2): 022202.
Published Online: May 26, 2011
...N. J. Moore; S. D. Terry; K. M. Lyons Presented are the results of experiments designed to investigate flame lift-off behavior in the hysteresis regime for low Reynolds number turbulent flows. The hysteresis regime refers to the situation where the jet flame has dual positions favorable to flame...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. March 2011, 133(1): 011201.
Published Online: March 29, 2011
... utilized to construct modified Arrhenius rate expressions for bimolecular reactions. C 7 H 14 O 2 was selected as a surrogate for the C 14 fuel in order to study the bimolecular reactions with flame radicals. In the present work, reactions of carbon numbers 4 and 5 of C 7 H 14 O 2 , where carbon number 1...
Journal Articles
Article Type: Technical Briefs
J. Energy Resour. Technol. December 2010, 132(4): 044501.
Published Online: November 23, 2010
... velocities of actual syngas compositions (based on different sources of coal) are also measured and analyzed. It was found that the effect of carbon dioxide had a more dominating role compared with nitrogen on the burning velocities. carbon compounds chemically reactive flow flames gas...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. June 2008, 130(2): 022201.
Published Online: May 2, 2008
..., thereby resulting in distributed ignition at multiple spatial locations, followed by lean combustion of the higher octane natural gas fuel via localized flame propagation. The multiple ignition centers result in faster combustion rates and higher fuel conversion efficiencies. The lean combustion of...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. March 2007, 129(1): 54–65.
Published Online: March 26, 2006
...; therefore, the effects of porous material parameters have been less considered. In this research, the effects of geometrical parameters of porous medium, namely porosity and permeability, on centerline temperature distributions, peak flame temperature, flame structure, and gas mixture preheating have been...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. December 2006, 128(4): 319–324.
Published Online: March 17, 2006
...S. D. Terry; K. M. Lyons A study of the characteristics of turbulent lifted-jet flames in the hysteresis regime was performed using methane and ethylene fuels in laminar and turbulent air coflows. Reattachment velocities and lifted flame heights just prior to reattachment vary linearly as for...
Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. December 2006, 128(4): 300–310.
Published Online: October 21, 2005
...Tracy Smith; Chendhil Periasamy; Benjamin Baird; S. R. Gollahalli Relative effects of buoyancy and momentum on the characteristics of horizontally oriented circular (Circ) and elliptic (E) burner flames in a quiescent environment over a wide range of jet exit velocities are presented. The major...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. March 2004, 126(1): 72–81.
Published Online: May 4, 2004
... for predicting the radiation heat transfer. The numerical predictions allowed the determination of the flame patterns, species concentration distribution, temperature and velocity fields. This kind of analysis can be a powerful tool for evaluating design options such as the type, number and...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. December 2003, 125(4): 304–310.
Published Online: November 18, 2003
... were used. The study did not attempt to increase turbulence using devices such as mesh screens or attempt to stabilize the flame. The results from a representative sample of 76 tests, from the 5,000+ tests that have been completed, are discussed herein. Typical pressure and temperature responses are...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. September 2002, 124(3): 197–203.
Published Online: August 6, 2002
...S. R. Gollahalli, Fellow ASME; D. Pardiwalla This study was directed to understand the coupling effects of the noncircular geometry of the burner and a crossflow on the combustion of gas jets. This paper compares the characteristics of turbulent propane jet flames from circular (diameter=0.45 cm...
Topics: Flames, Jets
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. September 2001, 123(3): 221–227.
Published Online: March 2, 2001
...K. M. Lyons; K. A. Watson Results are presented on the formation of a diffusion flame in a methane nonpremixed jet following the propagation of partially premixed combustion. An initially nonreacting turbulent methane jet (Re=2700) in quiescent air is ignited at a downstream location x / d = 70...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. June 2001, 123(2): 158–166.
Published Online: November 10, 2000
...Ala R. Qubbaj, Mem. ASME; S. R. Gollahalli, Fellow ASME Venturi-cascading is a technique to control pollutant emissions from diffusion flames by modifying air infusion and fuel-air mixing rates through changing the flow dynamics in the combustion zone with a set of venturis surrounding the flame. A...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. June 2001, 123(2): 167–172.
Published Online: November 10, 2000
...Azfar Kamal; S. R. Gollahalli, Fellow ASME An investigation of the effects of burner exit Reynolds number on the relative effects of burner geometry (circular and elliptic with an aspect ratio 2:4) in a propane jet flame is presented. Circular and elliptic burners of the equivalent area of a...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. March 2001, 123(1): 50–58.
Published Online: November 6, 2000
... recirculation not only reduces nitric oxides emissions and increases convective heat transfer rates, but reduces local flame temperatures such that the flames become almost invisible for a human eye. This combustion regime is called flameless oxidation. Gasunie’s interest in this technique of flameless...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. March 2001, 123(1): 32–38.
Published Online: October 30, 2000
... coal flames. The effects of radiant heat transfer were strong for intermediate-size particles (37–74 μm). Ignition temperature was examined analytically by using a modified distributed activation energy model for pyrolysis. The calculated results agreed with experimental ones obtained from both...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. March 2001, 123(1): 59–63.
Published Online: October 30, 2000
... breakup of the earlobe-shaped flame front along the outline of a pair of large-scale eddies of fresh mixture. combustion fluorescence spectroscopy free radicals CCD image sensors pulsatile flow flames 1 Schematic diagram of the pulse combustion system...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. March 2001, 123(1): 44–49.
Published Online: October 30, 2000
... on a cordierite honeycomb monolith. Catalytic combustion phenomena were categorized in three typical states: (a) state of partial reaction in the catalytic monolith, (b) state of homogeneous reaction in the monolith, (c) state of homogeneous reaction with a blue flame supposed on the monolith. A...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. March 2001, 123(1): 70–75.
Published Online: October 30, 2000
...Atsushi Makino Relevant to the self-propagating high-temperature synthesis (SHS) process, an analytical study has been made to investigate dependence of its flame initiation on system parameters, such as operating and physicochemical parameters, in order to obtain ignition energy. Use has been made...
Journal Articles
Article Type: Technical Papers
J. Energy Resour. Technol. June 2000, 122(2): 88–93.
Published Online: March 2, 2000
...R. F. Huang; C. L. Lin The velocity fields of nonpremixed circular-disk stabilized flames are measured by a two-component laser Doppler velocimeter. The results are presented in different flow regimes: prepenetration, penetration, and large shear flow. The velocity-vector fields, streamline...