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Author : Chung-hui Sih
Publisher :
ISBN 13 :
Total Pages : 408 pages
Book Rating : 4.:/5 (22 download)
Download or read book Buoyancy-affected Turbulent Diffusion Flames written by Chung-hui Sih and published by . This book was released on 1988 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S-M. Jeng
Publisher :
ISBN 13 :
Total Pages : 75 pages
Book Rating : 4.:/5 (5 download)
Download or read book An Investigation of Axisymmetric Buoyant Turbulent Diffusion Flames written by S-M. Jeng and published by . This book was released on 1982 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: This investigation considered measurements of the structure of axisymmetric, buoyant, turbulent diffusion flames in still air. Profiles of mean temperature, mean velocity, velocity fluctuations and total radiant heat flux were completed for methane flames, including careful characterization of burner exit conditions, in order to provide data for the evaluation of models of the process. Preliminary tests also provided mean temperature profiles for propane flames. Test conditions were chosen so that the flow was turbulent near the burner exit while effects of buoyancy were significant over most of the luminous portion of the flames. Both the present measurements and those of other investigators were compared with predictions of a k-E-g differential model, which included effects of buoyancy in the transport equations for turbulence quantities. The results indicated anisotropic effects in regions where buoyancy dominates flow properties suggesting the eventual desirability of multi-stress models for buoyant flames, although extensive recalibration of model constants from a limited data based would be required if this step were taken. Additional measurements and analysis of methane flames are in progress, in order to investigate the flame radiation properties and provide additional data on turbulence properties needed for model development.
Author : Mahmud Ashrafizaadeh
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (124 download)
Download or read book Numerical Simulation of Pulsating Buoyancy Driven Turbulent Diffusion Flames written by Mahmud Ashrafizaadeh and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Simulation of Pulsating Buoyancy Driven Turbulent Diffusion Flames written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yuji Hasemi
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (116 download)
Download or read book Flame Geometry Effects on the Buoyant Plumes from Turbulent Diffusion Flames written by Yuji Hasemi and published by . This book was released on 1983* with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David E. Ramaker
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (227 download)
Download or read book Similarity Solutions and Numerical Modeling in Buoyancy Controlled Turbulent Diffusion Flames written by David E. Ramaker and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research was to develop a fundamental understanding of the behavior of buoyancy controlled axisymmetric diffusion gas flames and liquid pool fires. Specifically, we attempted to simulate two-dimensional axisymmetric profiles of the velocity, temperature, and species and soot concentrations. Knowledge of these profiles allowed us to determine the main characteristics of the flame; i.e., the heat feed back, which in turn determines the mass burning rate of a liquid pool, the height of the flame and the power output of a fire source to the surrounding environment.
Author : S-M. Jeng
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (981 download)
Download or read book An Investigation of Axisymmetric Buoyant Turbulent Diffusion Flames written by S-M. Jeng and published by . This book was released on 1983 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S-M. Jeng
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (1 download)
Download or read book An Investigation of Axisymmetric Buoyant Turbulent Diffusion Flames: Flow Structure and Radiation Properties written by S-M. Jeng and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yuji Hasemi
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (116 download)
Download or read book Some Experimental Aspects of Turbulent Diffusion Flames and Buoyant Plumes from Fire Sources Against a Wall and in a Corner of Walls written by Yuji Hasemi and published by . This book was released on 1983 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : San-Mou Jeng
Publisher :
ISBN 13 :
Total Pages : 237 pages
Book Rating : 4.:/5 (192 download)
Download or read book An Investigation of Structure and Radiation Properties of Turbulent Buoyant Diffusion Flames written by San-Mou Jeng and published by . This book was released on 1984 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Diffusion Flame in Free Convection written by and published by . This book was released on 1978 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 402 pages
Book Rating : 4.:/5 (317 download)
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:
Author : Building and Fire Research Laboratory (U.S.)
Publisher :
ISBN 13 :
Total Pages : 85 pages
Book Rating : 4.:/5 (52 download)
Download or read book Mixing and Radiation Properties of Buoyant Turbulent Diffusion Flames written by Building and Fire Research Laboratory (U.S.) and published by . This book was released on 1995 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Present measurements emphasized self-preserving conditions far from the source where effects of source momentum and other source disturbances have been lost. The results show that earlier measurements in the literature were not carried out at sufficient distances from the source to reach self-preserving conditions, and provide measured properties at self-preserving conditions needed to develop and evaluate higher-order models of buoyant turbulent flows. The measurements were used to evaluate a simple k-E-g turbulence model finding good agreement between measured and predicted mean velocities and mixture fractions based on standard turbulence model constants, which is not unusual for a simple classical flow like the self-preserving buoyant turbulent plume.
Download or read book Mixing and Radiation Properties of Buoyant Turbulent Diffusion Flames. September 1, 1993-August 31, 1994 written by and published by . This book was released on 1955 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Howard D. Ross
Publisher : Elsevier
ISBN 13 : 0080549977
Total Pages : 601 pages
Book Rating : 4.0/5 (85 download)
Download or read book Microgravity Combustion written by Howard D. Ross and published by Elsevier. This book was released on 2001-09-03 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an introduction to understanding combustion, the burning of a substance that produces heat and often light, in microgravity environments-i.e., environments with very low gravity such as outer space. Readers are presented with a compilation of worldwide findings from fifteen years of research and experimental tests in various low-gravity environments, including drop towers, aircraft, and space.Microgravity Combustion is unique in that no other book reviews low- gravity combustion research in such a comprehensive manner. It provides an excellent introduction for those researching in the fields of combustion, aerospace, and fluid and thermal sciences. * An introduction to the progress made in understanding combustion in a microgravity environment* Experimental, theoretical and computational findings of current combustion research* Tutorial concepts, such as scaling analysis* Worldwide microgravity research findings
Author : N. L. Crauford
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (593 download)
Download or read book The Structure of an Unconfined Buoyant Turbulent Diffusion Flame written by N. L. Crauford and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harold S. Pergament
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (227 download)
Download or read book Properties of Large Turbulent Hydrogen/Air Diffusion Flames written by Harold S. Pergament and published by . This book was released on 1977 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The prediction of IR radiation from large, turbulent H2/air diffusion flames requires a detailed analysis of flame properties, including the effects of buoyancy. This report gives the methodology employed for analyzing such flames and the results of calculations on large flames. These (and subsequent) results have been used as input to the IR radiation calculations on the C-1 stack discussed in Part 2 of this final report. The model discussed herein treats the axisymmetric turbulent mixing of coflowing streams, including nonequilibrium chemistry, employing an eddy viscosity formulation. Comparisons are made between model predictions and the nonbuoyant laboratory H2/air flame data. It is shown that centerline temperatures and species mole fractions can be predicted to good accuracy. However, the calculated rate of radial transport of energy and mass is greater than that measured in the laboratory experiments. The results of a series of parametric calculations on buoyant flames and comparisons with buoyant flame length data show that: flame properties scale with nondimensional distance for Froude numbers (Fr) greater than about 1,000,000, buoyancy significantly affects temperature decay rates downstream of the location of maximum temperature (after all the H2 has burned), and the predicted influence of Fr on buoyant flame lengths is consistent with the available data.
