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Burner Stabilities Of Jet Diffusion Flames
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Book Synopsis Burner Stabilities of Jet Diffusion Flames by : James Phillip Seaba
Download or read book Burner Stabilities of Jet Diffusion Flames written by James Phillip Seaba and published by . This book was released on 1990 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: The near field lift-off phenomena associated with jet diffusion flames were investigated. Lift-off is defined as the instant when the luminous flame zone detaches from the burner exit, stabilizing itself downstream. The lift-off of the jet diffusion flames were studied using a fuel jet centered in a large coflowing air annulus. Fuels used consisted of methane and propane. The fuels are diluted with nitrogen, argon, and helium. Annulus, diluted fuel, and external nozzle geometry effects are studied for the jet diffusion flame. The jet diffusion flame is sensitive to the annulus velocity, the lift-off velocity decreasing with increasing annular velocity. Lift-off velocity decreases as dilution concentrations of the fuel jet increase. The external geometry effects influence the lift-off velocity, especially at higher annular flow rates. Two theories have explained the lift-off of jet diffusion flames. The locally premixed theory which assumes that the fuel and oxidant are fully premixed prior to combustion. The lift-off of the flame zone occurs due to the convective velocity of the premixed reactants exceeding the local flame speed. The second theory, the laminar flamelet model, states that the diffusion of reactants into the flame zone exceeds the chemical reaction rate, causing the flame to extinguish at the flame base, lifting the flame from the nozzle to a position downstream. The two models were evaluated by the different lift-off velocities produced by annulus and diluent effects. Laser Doppler anemometry (LDA) was used to characterize the flow field at and near the base of the jet diffusion flame. The local straining rate across the flame was approximated by the gradient of the mean radial velocity in the radial direction for the pure and diluted methane conditions. The straining rate was in qualitative agreement with that reported in the literature for counter-flow methane diffusion flames near extinction.
Book Synopsis Stability of Free-jet Diffusion Flames by : Amarnath V. Kapur
Download or read book Stability of Free-jet Diffusion Flames written by Amarnath V. Kapur and published by . This book was released on 1969 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simulation and Stability Analysis of Jet Diffusion Flames by : Joseph W. Nichols
Download or read book Simulation and Stability Analysis of Jet Diffusion Flames written by Joseph W. Nichols and published by . This book was released on 2005 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Stability of Free Jet Diffusion Flames by : Rudolf Günther
Download or read book The Stability of Free Jet Diffusion Flames written by Rudolf Günther and published by . This book was released on 1979 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Gravity on Laminar Gas Jet Diffusion Flames by : Thomas H. Cochran
Download or read book Effects of Gravity on Laminar Gas Jet Diffusion Flames written by Thomas H. Cochran and published by . This book was released on 1970 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental program was conducted to study the burning of laminar gas jet diffusion flames in a zero-gravity environment. The tests were conducted in the Lewis Research Center 2.2-Second Zero-Gravity Facility. The photographic results indicated that a sudden decrease in gravity level from 1 to 0 effected an immediate reduction in the length of the flame. Continued time in zero gravity resulted in the flame expanding away from the burner until extinguishment appeared to occur. Nondimensionalization of the governing flow equation yielded the parameters used to correlate the buoyancy effects.
Book Synopsis Combustion Stability Limits of Coflowing Turbulent Jet Diffusion Flames by : Werner J.A. Dahm
Download or read book Combustion Stability Limits of Coflowing Turbulent Jet Diffusion Flames written by Werner J.A. Dahm and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stability of Hydrocarbon Jet Diffusion Flames Near Lift-off by : Gregory Alan Holscher
Download or read book Stability of Hydrocarbon Jet Diffusion Flames Near Lift-off written by Gregory Alan Holscher and published by . This book was released on 1995 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Structure and Stability of Enclosed Laminar Jet Diffusion Flames by : Kezhong Jia
Download or read book The Structure and Stability of Enclosed Laminar Jet Diffusion Flames written by Kezhong Jia and published by . This book was released on 1999 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Swirl on the Stability and Turbulent Structure of Jet Diffusion Flames by : F. Takahashi
Download or read book Effects of Swirl on the Stability and Turbulent Structure of Jet Diffusion Flames written by F. Takahashi and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Buoyancy on Gas Jet Diffusion Flames by :
Download or read book Effects of Buoyancy on Gas Jet Diffusion Flames written by and published by . This book was released on 1993 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Investigation of Laminar Gas Jet Diffusion Flames in Zero Gravity by : Thomas H. Cochran
Download or read book Experimental Investigation of Laminar Gas Jet Diffusion Flames in Zero Gravity written by Thomas H. Cochran and published by . This book was released on 1971 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental program was conducted to study the burning of laminar gas jet diffusion flames in a zero-gravity environment. The tests were conducted in the Lewis Research Center's 2.2- Second-Zero-Gravity Facility and were a part of a continuing effort investigating the effects of gravity on basic combustion processes. The photographic results indicate that steady state gas jet diffusion flames existed in zero gravity but they were geometrically quite different than their normal-gravity counterparts. Methane-air flames were found to be approximately 50 percent longer and wider in zero gravity than in normal gravity.
Book Synopsis Exergy for A Better Environment and Improved Sustainability 1 by : Fethi Aloui
Download or read book Exergy for A Better Environment and Improved Sustainability 1 written by Fethi Aloui and published by Springer. This book was released on 2018-08-04 with total page 1443 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multi-disciplinary book presents the most recent advances in exergy, energy, and environmental issues. Volume 1 focuses on fundamentals in the field and covers current problems, future needs, and prospects in the area of energy and environment from researchers worldwide. Based on selected lectures from the Seventh International Exergy, Energy and Environmental Symposium (IEEES7-2015) and complemented by further invited contributions, this comprehensive set of contributions promote the exchange of new ideas and techniques in energy conversion and conservation in order to exchange best practices in "energetic efficiency". Included are fundamental and historical coverage of the green transportation and sustainable mobility sectors, especially regarding the development of sustainable technologies for thermal comforts and green transportation vehicles. Furthermore, contributions on renewable and sustainable energy sources, strategies for energy production, and the carbon-free society constitute an important part of this book. Exergy for Better Environment and Sustainability, Volume 1 will appeal to researchers, students, and professionals within engineering and the renewable energy fields.
Book Synopsis Experimental Investigation of Flame Stability of Enclosed Laminar Jet Diffusion Flame by : Brandon J. Ryan
Download or read book Experimental Investigation of Flame Stability of Enclosed Laminar Jet Diffusion Flame written by Brandon J. Ryan and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stability-limit Predictions of Methane Jet Diffusion Flames by : Fumiaki Takahashi
Download or read book Stability-limit Predictions of Methane Jet Diffusion Flames written by Fumiaki Takahashi and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Investigation of the Flow Structure and Stability Limits of Jet Diffusion Flames in a Co-flowing Oxidizing Stream by : Nancy Papanikolaou
Download or read book An Experimental Investigation of the Flow Structure and Stability Limits of Jet Diffusion Flames in a Co-flowing Oxidizing Stream written by Nancy Papanikolaou and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stability Limits of Hydrogen/air Coflow Jet Diffusion Flames by : F. Takahashi
Download or read book Stability Limits of Hydrogen/air Coflow Jet Diffusion Flames written by F. Takahashi and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diffusion Flames in the Laboratory by : John Barr
Download or read book Diffusion Flames in the Laboratory written by John Barr and published by . This book was released on 1954 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
