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An Experimental And Numerical Investigation Into Reacting Vortex Structures Associated With Unstable Combustion
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Book Synopsis An Experimental and Numerical Investigation Into Reacting Vortex Structures Associated with Unstable Combustion by : Donald William Kendrick
Download or read book An Experimental and Numerical Investigation Into Reacting Vortex Structures Associated with Unstable Combustion written by Donald William Kendrick and published by . This book was released on 1995 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Kendrick, Donald William Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :568 pages Book Rating :4.:/5 (437 download)
Book Synopsis An Experimental and Numerical Investigation Into Reacting Vortex Structures Associated with Unstable Combustion [microform] by : Kendrick, Donald William
Download or read book An Experimental and Numerical Investigation Into Reacting Vortex Structures Associated with Unstable Combustion [microform] written by Kendrick, Donald William and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1995 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of the Reacting Vortex Structures Associated with Pulse Combustion by : Thomas William Zsak
Download or read book An Investigation of the Reacting Vortex Structures Associated with Pulse Combustion written by Thomas William Zsak and published by . This book was released on 1993 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental and Numerical Investigation of Vortex Shedding by : Abubaker Awidat Salem
Download or read book Experimental and Numerical Investigation of Vortex Shedding written by Abubaker Awidat Salem and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experiments and Numerical Simulations of Turbulent Combustion of Diluted Sprays by : Bart Merci
Download or read book Experiments and Numerical Simulations of Turbulent Combustion of Diluted Sprays written by Bart Merci and published by Springer Science & Business Media. This book was released on 2014-03-27 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reflects the results of the 2nd and 3rd International Workshops on Turbulent Spray Combustion. The focus is on progress in experiments and numerical simulations for two-phase flows, with emphasis on spray combustion. Knowledge of the dominant phenomena and their interactions allows development of predictive models and their use in combustor and gas turbine design. Experts and young researchers present the state-of-the-art results, report on the latest developments and exchange ideas in the areas of experiments, modelling and simulation of reactive multiphase flows. The first chapter reflects on flame structure, auto-ignition and atomization with reference to well-characterized burners, to be implemented by modellers with relative ease. The second chapter presents an overview of first simulation results on target test cases, developed at the occasion of the 1st International Workshop on Turbulent Spray Combustion. In the third chapter, evaporation rate modelling aspects are covered, while the fourth chapter deals with evaporation effects in the context of flamelet models. In chapter five, LES simulation results are discussed for variable fuel and mass loading. The final chapter discusses PDF modelling of turbulent spray combustion. In short, the contributions in this book are highly valuable for the research community in this field, providing in-depth insight into some of the many aspects of dilute turbulent spray combustion.
Book Synopsis An Experimental and Numerical Investigation of Asymmetrically-fueled Whirl Flames by : Hampton Clay Gabler
Download or read book An Experimental and Numerical Investigation of Asymmetrically-fueled Whirl Flames written by Hampton Clay Gabler and published by . This book was released on 1998 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Combustion in Large Vortices by : Frank E. Marble
Download or read book Investigation of Combustion in Large Vortices written by Frank E. Marble and published by . This book was released on 1987 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigations of non-steady and unstable combustion in a dump combustor have been completed. The large amplitude driving mechanism centers on the periodic formation and combustion of a large vortex, the phase of heat release being governed by both gas dynamic and chemical delay times. This mechanism is now very well understood, both in principle and in quantitative detail. These results make it a prime candidate for investigations into active control of unstable combustion. The unsteady combustion facility is now being modified to study the details of combustion processes in large vortices utilizing a CID image intensified camera and an LDV for velocity measurements in the hot gas. This study constitutes an essential element in a larger study of shock enhancement for combustion of hydrogen in supersonic burners. Keywords: Unsteady combustion; Vortex burning; Pressure oscillations; Combustion instability.
Book Synopsis A Numerical Investigation of Vortex Breakdown by : M. G. Hall
Download or read book A Numerical Investigation of Vortex Breakdown written by M. G. Hall and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental and Numerical Investigation of the Influence of Multiple-Burner Arrangements on Combustion Instabilities in Turbulent Swirl-Stabilized Flames by : Christian Kraus
Download or read book Experimental and Numerical Investigation of the Influence of Multiple-Burner Arrangements on Combustion Instabilities in Turbulent Swirl-Stabilized Flames written by Christian Kraus and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of Turbulent Flames Using Vortex Methods by : Ahmed F. Ghoniem
Download or read book Numerical Simulation of Turbulent Flames Using Vortex Methods written by Ahmed F. Ghoniem and published by . This book was released on 1985 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this research is to develop vortex methods for numerical simulation of multi-dimensional, time-dependent turbulent chemically-reacting flows with high temporal and spatial accuracy. Of particular interest is turbulent shear flows associated with the propagation of turbulent flames in combustion systems. Vortex methods are developed and incorporated in a numerical simulations of turbulent reacting flow, and applied to study the propagation and stability of turbulent flames in different geometrical configurations. At high Damkohler number, a dynamic thin flame model is used, while for slower reactions, the vortex scheme is extended to solve the energy and species equations with finite rate chemical reaction in a Lagrangian particle form. Results have been obtained for a confined mixing layer, a recirculating flow over a rearward facing step, and a confined shallow cavity. Detailed analyses have been performed to validate the numerical schemes and to study the structure and stability of these flows. The scheme has been extended to three dimension flow and an investigation of the transition to turbulence in an axisymmetric shear layer has been initiated. Currently, the combustion algorithms. Are being linked to the vortex simulation to predict the interaction between the turbulent field and the burning process. Keywords: Turbulent combustion.
Book Synopsis Numerical Simulation of Turbulent Combustion Using Vortex Methods by : Ahmed F. Ghoniem
Download or read book Numerical Simulation of Turbulent Combustion Using Vortex Methods written by Ahmed F. Ghoniem and published by . This book was released on 1988 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the course of this year, we have concentrated on the validation of the transport element method in two dimensions and its extension to: three dimensional flow, to reacting flow with finite Arrhenius rates, and to variable-density flow including the effect of gravity. Comparisons with experimental data on a reacting shear layer with low heat release show that the numerical results agree very closely with the measurements of the velocity statistics, the passive scalar statistics, the product formation rate and the product thickness. Numerical studies are used to establish the dependence of the product formation rate on the Reynolds number, the Lewis number and the Damkohler number. Studies of a variable-density flow focused on the effects of density gradients on the structure of turbulence in both the momentum driven and gravity-driven reacting flow. In particular, how does heat release change the rates of growth and mixing within the layer via the impact of the expansion field and the baroclinic vorticity generation due to the density gradients. For this purpose, examples of a horizontal premixed reacting shear layer and a vertical jet diffusion flame are analyzed. Numerical simulation, Turbulent combustion, Vortex methods. (mjm).
Book Synopsis Numerical/experimental Investigation Into Multiple Vortex Structures Formed Over Wings with Flat End-caps by : Elgin A. Anderson
Download or read book Numerical/experimental Investigation Into Multiple Vortex Structures Formed Over Wings with Flat End-caps written by Elgin A. Anderson and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental and Numerical Investigation of Vortex Flow Over a 76/60-deg Double-delta Wing by : J. E. J. Maseland
Download or read book Experimental and Numerical Investigation of Vortex Flow Over a 76/60-deg Double-delta Wing written by J. E. J. Maseland and published by . This book was released on 1992 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Les of the Pulsating, Non-Reacting Flow in Combustion Chambers by : Balazs Pritz
Download or read book Les of the Pulsating, Non-Reacting Flow in Combustion Chambers written by Balazs Pritz and published by Sudwestdeutscher Verlag Fur Hochschulschriften AG. This book was released on 2010-03 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lean premixed combustion allows for reducing the production of thermal NOx, therefore it is largely used in industrial combustion. Lean premixed combustors are, however, prone to combustion instabilities. An analytical model was developed by Buchner [14] in order to predict the stability limits of combustion systems. A significant input of this model is the damping ratio, which should be determined from experiment or numerical simulation. In the present work a numerical investigation of the pulsating, non-reacting flow in a model combustion chamber and a coupled system of burner plenum and combustion chamber is presented. The results of the Large Eddy Simulations (LES) are compared with the analytical model and experimental data. The prediction of the damping ratio by LES is very good. It depends, however, on special boundary conditions. By means of the simulations the basic assumptions made by the analytical model could be confirmed. The pulsating flow in the region of the exhaust gas pipe was analyzed and compared with the literature. The major damping mechanisms were identified in the system and a source of combustion instabilities could be localized.
Book Synopsis Experimental and Numerical Investigation of Turbulent Diffusion Flames in a Laboratory Combustor with a Slot Burner by :
Download or read book Experimental and Numerical Investigation of Turbulent Diffusion Flames in a Laboratory Combustor with a Slot Burner written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reaction Zone Models for Vortex Simulation of Turbulent Combustion by :
Download or read book Reaction Zone Models for Vortex Simulation of Turbulent Combustion written by and published by . This book was released on 1995 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this work were to develop, implement and validate a reaction zone model for vorticity based turbulent combustion simulation at high Reynolds and Damkohler numbers. Direct Simulation results using the transport element method were used to examine the structure of the reaction zone and to develop a reasonable set of approximations that could be used to simplify the governing equations. The resulting model, adopting a singular expansion philosophy of the flow equations; the elemental flame model consists of (1) a conserved scalar approximation of the outer non-reacting flow to determine the location of the reaction surface; (2) an unsteady, uniformly strained flame structure model for the inner reacting flow imbedded within the reaction surface, to compute the local burning rate and flame structure profiles; and, (3) a set of kinematically based approximations used to monitor the generation, interaction and elimination of flame surface area as it spins around and reaches the tip of the spiral within large vortical structures. Comparisons between these 'large structure simulations' and direct numerical simulation showed that the model could accurately capture the physics of reacting flows and predict flame surface evolution and rate of burning. Future work should be concerned with (a) extending this model by incorporating another approximation at areas of low strains, i.e., inside the large structure where the reaction zones resemble those of stratified reactors, and (b) extending the application of the developed model to three- dimensional flows. (AN).
Book Synopsis A Numerical Investigation of the Unsteady Counterflow Diffusion Flame by : Ibrahim M. Hallaj
Download or read book A Numerical Investigation of the Unsteady Counterflow Diffusion Flame written by Ibrahim M. Hallaj and published by . This book was released on 1996 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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