An investigation of combustion in a flowing stream with turbulence by Oliver Doty Compton

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Published by Rensselaer Polytechnic Institute .

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Full text of "An investigation of combustion in a flowing stream with turbulence .• i Tills fc&eaie undertake* ft geaeral investigation of eoabugtiori in s.

£ lo^iR^ stream* It was first necessary to determine, if possible, the nscnaais* of burning, to eat&olisa the flow charac- teristic shleh suet be present for & flame to eziet* jtudy. Flow, Turbulence and Combustion is a peer-reviewed scientific journal on fluid covers original research on fluid mechanics and combustion, with the areas of interest including industrial, geophysical, and environmental journal was established in under the name Applied Scientific obtained its present name inwhich also reflects Discipline: Fluid mechanics.

T1 - Turbulent Structure of a Jet Diffusion Flame in a Co-Flowing Air Stream with Grid-Turbulence. AU - Manako, Hiroyasu. AU - Ueda, Toshihisa. AU - Mizomoto, Masahiko. PY - /1/1. Y1 - /1/1. N2 - The effects of a flame on a shear generated turbulence and on a grid-turbulence have been investigated : Hiroyasu Manako, Toshihisa Ueda, Masahiko Mizomoto.

Transition, Turbulence and Combustion: Volume Ii: Turbulence And Combustion (Icase Larc Interdisciplinary Series In Science And Engineering) [Hussaini, M.Y.] on *FREE* shipping on qualifying offers.

Transition, Turbulence and Combustion: Volume Ii: Turbulence And Combustion (Icase Larc Interdisciplinary Series In Science And Engineering)Format: Paperback. : Fundamentals Of Turbulence Modelling (Combustion - An International Series) (): Chen, Ching Jen: Books. The structural features of turbulence at the free surface of a channel flow have been experimentally investigated.

The experiments were conducted in a horizontal channel of large aspect ratio in the (depth based) Reynolds number range of – The results indicate that the persistent structures on the free surface can be classified as upwellings, downdrafts, and Cited by: The predictive performance of several turbulence models, among them formulations based on non-linear stress-strain relationships and on stress-transport equations, is examined in a collaborative university-industry study directed towards a generic wing-body junction.

The geometry consists of a variation of the symmetric NACA aerofoil mounted on a flat plate, Cited by: Turbulence study in the internal combustion engine Z.

Barbouchi* and J. Bessrour Mechanics and industrialisation research unit (MA2I), Mechanical engineering department, National.

T1 - TURBULENCE STRUCTURE OF A JET DIFFUSION FLAME IN A CO-FLOWING AIR STREAM WITH GRID TURBULENCE. AU - Manako, Hiroyasu. AU - Ueda, Toshihisa. AU - Mizomoto, Masahiko. PY - /1/1. Y1 - /1/1.

N2 - The effects of a flame on a shear generated turbulence and on a grid turbulence have been investigated by: 2. Experimental Investigation on the Effects of Free Stream Turbulence and Fuel Type on Structure and Blowoff Characteristics of Turbulent Premixed Bluff-body Stabilized Flames Bikram Roy Chowdhury, PhD University of Connecticut, An experimental investigation on the effect of different levels of turbulence intensity andAuthor: Bikram Roy Chowdhury.

His dissertation is entitled "An Experimental Investigation of the Relationship between Flow Turbulence and Temperature Fluctuations in Turbulent Non-Premixed Jet Flames". Tom currently is a National Research Council post-doctoral researcher.

Experimental Investigation of the Flow Inside a Water Model of a Gas Turbine Combustor: Part 1—Mean and Turbulent Flowfield The main features of the geometry are the interaction between two rows of radially opposed jets penetrating a cross-flowing axial stream with and without swirl, providing a set of data of relevance to all flows Cited by: To evaluate the effects of free-stream turbulence on turbulent boundary layers, a flat plate was positioned in a wind tunnel and a set of rods was positioned upstream of the plate to generate free-stream turbulence.

detailed description of the system and instrumentation follows. A All experiments were performed in the Cal Poly draw-thru wind File Size: 1MB. Eighteenth Symposium (International) on Combustion The Combustion Institute, THE COMBUSTION OF A FUEL JET IN A STREAM OF LEAN GASEOUS FUEL-AIR MIXTURES G.

KARIM Professor of Mechanical Engineering AND I. WIERZBA, M. METWALLY, K. MOHAN The University of Calgary, Department of Mechanical Engineering, University Drive Cited by: Turbulent combustion: The state of the art What Is Specific about Turbulence with Combustion.

In recent years, nothing seems to have inspired researchers in the combustion community so much as the unresolved problems in turbulent combustion. Tur-bulence in itself is far from being fully understood; it is probably the mostFile Size: KB.

A numerical analysis of an atmospheric, subsonic, turbulent lifted H 2 /N 2 jet flame in vitiated co-flow is presented. Turbulence is treated by a Large Eddy Simulation (LES) methodology. Numerical Investigation of Flow and Combustion in a Single-Element GCH4/GOX Rocket Combustor: Aspects of Turbulence Modeling A.

Chemnitz, T. Sattelmayery, C. Rothz, O. Haidnx Technische Universit at Munchen, Munich, Germany Y. Daimon{Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, Japan R. Kellerk, P. GerlingerFile Size: 1MB.

Investigation of Flame-Generated Turbulence in Premixed Flames at Low and High Burning Velocities Yanson Liu ABB Turbo Systems Ltd, Turbomachinery Research and Development, Fluid Flow and Combustion Laboratory, Baden / Switzerland Bernhard Lenze Engler-Bunte-Institut, Bereich Feuerungstechnik, Universitiit Karlsruhe, Germany Dedicated to Professor Dr.

Cited by: 1. Davidson’s book can be compared with another text on turbulence, Tur-bulent Flows(Cambridge U. Press, ) by Stephen B. Pope, a book in-tended primarily for graduate engi-neering students. The first half of Pope’s book largely overlaps with the first eight chapters of Davidson’s.

The second half of Pope’s book is devotedAuthor: Mark Nelkin. diffusion flame, methane -air, turbulence models, CFD, finite volume. Cite This Article: O. Moussa, and Z. Driss, “Numerical Investigation of the Turbulence Models Effect on the Combustion Characteristics in a Non-Premixed Turbulent Flame Methane-Air.” American Journal of Energy Research, vol.

5, no. 3 (): doi: /ajer Cited by: 1. Experimental investigation of the turbulence flow characteristics behind a system of flame stabilizers. Kudryavtsev & G. Kuntsev Journal of engineering physics vol pages 47 – 51 ()Cite this articleAuthor: A. Kudryavtsev, G. Kuntsev. Compared with bathtub combustion chamber which is widely used in SI engines especially in China, this paper introduces an experimental investigation on the performances of SI test engine with a new squish jet-turbulence combustion chamber.

The new chamber can combine inlet swirl and squish effectiveCited by: 2. A two-dimensional axis-symmetric numerical model was solved to investigate the effect of four turbulence models on combustion characteristics, such as the velocity, the pressure, the turbulent kinetic energy and the dissipation rate in a methane-air no-premixed flame.

Based on the commercial CFD code Ansys fluentdifferent turbulence models including the standard k Cited by: 1. The blowout limits of a lifted diffusion flame in a coflowing stream of air are estimated using a simple model for extinction, for a range of fuels, jet diameters and co-flowing stream velocities.

The proposed model uses a parameter which relates to the ratio of a time associated with the mixing processes in a turbulent jet to a characteristic. @article{osti_, title = {Weak extinction limits of turbulent heterogeneous fuel/air mixtures}, author = {Ballal, D R and Lefebvre, A H}, abstractNote = {Experimental and theoretical studies are made of the factors governing the weak extinction limits of stabilized flames supplied with flowing mixtures of liquid fuel drops and air.

The test program includes wide variations in. Yet the importance of the proper modeling of the turbulence-flame interaction is a well known topic in the spray combustion community [1,4,6,7,8,9,10,13,17,18,19,20,21]. In view of the application of the artificially thickened flame (ATF) approach, many works have been using a similar value for the exponent of the power-law function used to Cited by: 1.

An equation has been derived for predicting the weak extinction limits of stabilized flames supplied with turbulent, flowing mixtures of uniform composition. Experiments have been conducted to investigate the influence on weak extinction limits of wide variations in inlet air pressure, temperature, velocity, and turbulence by: High-Speed Flows and Combustion.

High-Speed Flows and Combustion. Described in this thesis are the results of an experimental and theoretical study of the effects of turbulence on combustion in single and dual chamber spark ignition engines.

The techniques adopted in the experimental study included the use of high speed cine photography, and the collection of simultaneous cylinder pressure records using an on-line computer. TURBULENCE AND COMBUSTION IN DIESEL ENGINES. In both gasoline and diesel engines, the fuel and air must be properly mixed to obtain efficient gasoline engines, mixing of the fuel and air takes place outside the ing upon the design of the system, mixing will occur in one of two places: (1) within the carburetor in the carburator-type system.

The aim of this study was to scrutinize the effect of in-cylinder turbulence on the temperature field and on the combustion process. The fuel tracer, acetone, is measured using laser induced fluorescence (LIF) to characterize the reaction fronts, and chemiluminescence images were recorded using a high speed camera, with a crank angle Cited by: This paper presents a numerical investigation of ignition and combustion stabilization of a novel design of a solid-fuel ramjet (SFRJ) motor with and without swirl flow.

The proposed design includes two solid fuels, retaining the simple design of the classic SFRJ. Numerical simulations of unsteady, turbulent, reactive, and swirling flow coupled with solid-fuel pyrolysis have been Cited by: 1.

ISSN:Está en índices de citas (Science Citation Index Expanded, Scopus) = +Está al tiempo en WoS (AHCI, SCIE o SSCI) y en Scopus (Science Citation Index Expanded, Scopus) = +1Está en dos o más bases datos de indización y resumen o en DOAJ (PASCAL, Aerospace Database, Applied Science & Technology Source, Aquatic.

premixed combustion with buoyancy was used together with k-ε type of turbulence model with buoyancy. INTRODUCTION Combustion in a fire had been studied extensively in the literature [e.g.

1,2]. At the initial stage of an enclosure fire, a fire plume will be formed above the burning object with most of the heat released. The research work performed in this group, led by Stephen Pope, is aimed at developing models and computational methodologies for the calculation of turbulent and reactive flows, especially turbulent non-reactive turbulent flows, CFD plays an important role in the design of engineering equipment such as aircraft wings and gas-turbine compressors.

A robust near-wall elliptic-relaxation eddy-viscosity turbulence model for CFD, Int. Heat Fluid Flow, 25, –, This article is a stub, a short article which needs to be improved. You can help by expanding it. Investigation of the effects of free-stream turbulence on wind-induced responses of tall building by Large Eddy Simulation turbulence integral length scale;turbulence intensity;tall building;wind-induced response;CFD;LES; In this study, a square rectangular tall building is considered to investigate the effects of turbulence integral length scale and turbulence intensity on the along.

A physical model and a numerical solution procedure has been developed to predict heat transfer behaviour in supercritical fluids.

A major area of concentration was the modelling of the turbulent components of shear stress and heat flux. Traditionally, the turbulent fluxes are modelled by algebraic expressions such as the familiar mixing length methods. However, the use of this. Turbulence. What is turbulence. Let us first define what a flow is: a flow is the continuous movement of a fluid, i.e.

either a liquid or a gas, from one place to lly there exist two types of flows, namely laminar flows and turbulent flows. Roughly speaking we can say that a laminar flow is a 'simple' flow while a turbulent flow is a 'complicated' flow.

The chapter presents the results of an experimental study of hydrodynamics and diffusion combustion of jets flowing out of long tubes in the Reynolds number range –13, into air. The methods used in the experiments are visualization in the ultraviolet region, PIV, and hot-wire anemometry.

The amplitude-phase structure of optical filters in systems of the Hilbert Author: Dubnishchev Yuri Nikolaevich, Lemanov Vadim Vladimirovich, Lukashov Vladimir Vladimirovich, Arbuzov.

jet in a combustion chamber using OpenFOAM version and to further investigate correlations between the turbulence phenomenas created by the jet and the surrounding air. It has been shown that the mixing rate and subsequent combustion is a direct consequence.Turbulence Models Comparison for the Numerical Study of the Air Flow, an Internal Combustion Engine Ioannis Pantokratoras, Charalampos Arapatsakos Abstract—Numerical flow studies of air flowing into the cylinder of an internal combustion, four stroke, two valve engine have been undertaken.

The studies relating to the phase.velocity field in an internal combustion engine is characterised by cycle-to-cycle variations at low frequencies and turbulence spread over the whole spectra (Sullivan et al., ). Determination of cyclic variations and flow instabilities that may broaden the measured turbulence levels is thus essential.

Findings of resent studies by.

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