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Quantitative Measurement Of 2 D Fuel Vapor Concentration In A Transient Spray Via Laser Induced Fluorescence Technique
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Book Synopsis Quantitative Measurement of 2-D Fuel Vapor Concentration in a Transient Spray Via Laser-induced Fluorescence Technique by : Chi-Nan Yeh
Download or read book Quantitative Measurement of 2-D Fuel Vapor Concentration in a Transient Spray Via Laser-induced Fluorescence Technique written by Chi-Nan Yeh and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flow and Combustion in Reciprocating Engines by : C. Arcoumanis
Download or read book Flow and Combustion in Reciprocating Engines written by C. Arcoumanis and published by Springer Science & Business Media. This book was released on 2009-06-29 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimization of combustion processes in automotive engines is a key factor in reducing fuel consumption. This book, written by eminent university and industry researchers, investigates and describes flow and combustion processes in diesel and gasoline engines.
Author :Mark Sean Beckman Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :252 pages Book Rating :4.:/5 (89 download)
Book Synopsis Quantitative Vapor Phase Imaging of In-cylinder Diesel Fuel Sprays by : Mark Sean Beckman
Download or read book Quantitative Vapor Phase Imaging of In-cylinder Diesel Fuel Sprays written by Mark Sean Beckman and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 2004 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atlas of Visualization by : Yasuki Nakayama
Download or read book Atlas of Visualization written by Yasuki Nakayama and published by CRC Press. This book was released on 1996-05-29 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Visualization is a novel interdisciplinary science for making any phenomenon clear by visualizing the invisible using computer techniques. It covers such diverse phenomena as fluid flow, heat and mass transfer, sound, electromagnetism, and chemical change and its combinations. The Atlas of Visualization, II presents the latest advances in visualization techniques, image processing, computer graphics, and visualization of measured and compound results. Focusing on both experimental and computer-aided visualization, this encyclopedic resource discusses all aspects of this new and evolving science.
Author :James H.W. Whitelaw Publisher :Springer Science & Business Media ISBN 13 :9783540426653 Total Pages :460 pages Book Rating :4.4/5 (266 download)
Book Synopsis Thermo-and Fluid-dynamic Processes in Diesel Engines by : James H.W. Whitelaw
Download or read book Thermo-and Fluid-dynamic Processes in Diesel Engines written by James H.W. Whitelaw and published by Springer Science & Business Media. This book was released on 2002-01-11 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes versions of papers selected from those presented at the THIESEL 2000 Conference on Thermofluidynamic Processes in Diesel Engines, held at the Universidad Politecnica de Valencia, during the period of September th th 13 to 15 , 2000. The papers are grouped into seven thematic areas: State of the Art and Prospective, Fuels for Diesel Engines, Injection System and Spray Formation, Combustion and Pollutant Formation, Modelling, Experimental Techniques, and Air Management. These areas cover most of the technologies and research strategies that may allow Light Duty and Heavy Duty Diesel engines to comply with current and forthcoming emission standards, while maintaining or improving fuel consumption. The main objectives of the conference were to bring together ideas and experience from Industry and Universities to facilitate interchange of information and to promote discussion of future research and development needs. The technical papers emphasised the use diagnostic and simulation techniques and their relationship to engineering practice and the advancement of the Diesel engine. We hope that this approach, which proved to be successful at the Conference, is reflected in this volume. We thank all those who contributed to the success of the Conference, and particularly the members of the Advisory Committee who assessed abstracts and chaired many of the technical sessions. Weare also grateful to participants who presented their work or contributed to the many discussions. Finally, the Conference benefitted from financial support from the organisations listed below and we are glad to have this opportunity to record our gratitude.
Author :American Society of Mechanical Engineers. Internal Combustion Engine Division. Spring Technical Conference Publisher : ISBN 13 : Total Pages :334 pages Book Rating :4.3/5 (91 download)
Book Synopsis Proceedings of the ... Spring Technical Conference of the ASME Internal Combustion Engine Division by : American Society of Mechanical Engineers. Internal Combustion Engine Division. Spring Technical Conference
Download or read book Proceedings of the ... Spring Technical Conference of the ASME Internal Combustion Engine Division written by American Society of Mechanical Engineers. Internal Combustion Engine Division. Spring Technical Conference and published by . This book was released on 2002 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book JSME International Journal written by and published by . This book was released on 1999 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental and Computational Study of Fuel Injection, Mixing and Combustion in Diesel Engines by : Laura M. Ricart
Download or read book An Experimental and Computational Study of Fuel Injection, Mixing and Combustion in Diesel Engines written by Laura M. Ricart and published by . This book was released on 1998 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Literature Abstracts by : Society of Automotive Engineers
Download or read book Technical Literature Abstracts written by Society of Automotive Engineers and published by . This book was released on 2000 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Diagnostics and Optical Measurement Techniques in Internal Combustion Engines by : Hua Zhao
Download or read book Laser Diagnostics and Optical Measurement Techniques in Internal Combustion Engines written by Hua Zhao and published by SAE International. This book was released on 2012-07-30 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing concern about CO2 emissions and energy prices has led to new CO2 emission and fuel economy legislation being introduced in world regions served by the automotive industry. In response, automotive manufacturers and Tier-1 suppliers are developing a new generation of internal combustion (IC) engines with ultra-low emissions and high fuel efficiency. To further this development, a better understanding is needed of the combustion and pollutant formation processes in IC engines. As efficiency and emission abatement processes have reached points of diminishing returns, there is more of a need to make measurements inside the combustion chamber, where the combustion and pollutant formation processes take place. However, there is currently no good overview of how to make these measurements. Based on the author’s previous SAE book, Engine Combustion Instrumentation and Diagnostics, this book focuses on laser-based optical techniques for combustion flows and in-cylinder measurements. Included are new chapters on optical engines and optical equipment, case studies, and an updated description of each technique. The purpose of this book is to provide, in one publication, an introduction to experimental techniques that are best suited for in-cylinder engine combustion measurements. It provides sufficient details for readers to set up and apply these techniques to IC engines and combustion flows.
Book Synopsis Injection Rate-shape Optimization as a Means of Controlling Comustion of Diesel Sprays by : Harmit Juneja
Download or read book Injection Rate-shape Optimization as a Means of Controlling Comustion of Diesel Sprays written by Harmit Juneja and published by . This book was released on 2003 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Induced Fluorescence Detection of Gums in Jet Fuels by :
Download or read book Laser Induced Fluorescence Detection of Gums in Jet Fuels written by and published by . This book was released on 1992 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current method (ASTM D381) of determining the concentration of gums in jet fuels is a lengthy procedure requiring a large sample size. Because gum formation is believed to be an important step in the formation of deposits in fuel systems used in jet aircraft, a non-intrusive method of performing spatially resolved measurements of gum concentration in high temperature flow systems is a desired research tool. The present study was conducted to determine the feasibility of using laser-induced fluorescence (LIF) to monitor gum concentration in jet fuel. The study revealed several effects, such as aging and the interference of other fluoroshores with gum fluorescence, which require further investigation before LIF is to be considered a quantitative technique for measuring gums in jet fuels. However, this study showed that the formation of gums in jet fuels is detectable by LIF. The results show that gum formation in some fuels correlates strongly with LIF while for other fuels the results are ambiguous.
Book Synopsis Annual Index/abstracts of SAE Technical Papers by :
Download or read book Annual Index/abstracts of SAE Technical Papers written by and published by . This book was released on 2007 with total page 1218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantitative Measurements of Ablation-products Transport in Supersonic Turbulent Flows Using Planar Laser-induced Fluorescence by : Christopher Stanley Combs
Download or read book Quantitative Measurements of Ablation-products Transport in Supersonic Turbulent Flows Using Planar Laser-induced Fluorescence written by Christopher Stanley Combs and published by . This book was released on 2015 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: A recently-developed experimental technique based on the sublimation of naphthalene, which enables imaging of the dispersion of a passive scalar using planar laser-induced fluorescence (PLIF), is applied to a Mach 5 turbulent boundary layer and a NASA Orion capsule flowfield. To enable the quantification of naphthalene PLIF images, quantitative fluorescence and quenching measurements were made in a temperature- and pressure-regulated test cell. The test cell measurements were of the naphthalene fluorescence lifetime and integrated fluorescence signal over the temperature range of 100 K to 525 K and pressure range of 1 kPa to 40 kPa in air. These data enabled the calculation of naphthalene fluorescence yield and absorption cross section over the range of temperatures and pressures tested, which were then fit to simple functional forms for use in the calibration of the PLIF images. Quantitative naphthalene PLIF images in the Mach 5 boundary layer revealed large-scale naphthalene vapor structures that were regularly ejected out to wall distances of approximately y/ [delta] = 0.6 for a field of view that spanned 3 [delta] to 5 [delta] downstream of the trailing edge of the naphthalene insert. The magnitude of the calculated naphthalene mole fraction in these structures at y/ [delta] = 0.2 ranged from approximately 1-6% of the saturation mole fraction at the wind tunnel recovery temperature and static pressure. An uncertainty analysis showed that the uncertainty in the inferred naphthalene mole fraction measurements was ± 20%. Mean mole fraction profiles collected at different streamwise locations were normalized by the mole fraction measured at the wall and a characteristic height of the scalar boundary layer, causing the profiles to collapse into one "universal" mole fraction profile. Two-dimensional fields of naphthalene mole fraction were also obtained simultaneously with velocity by using particle image velocimetry (PIV) and PLIF. The images show large-scale naphthalene vapor structures that coincide with regions of relatively low streamwise velocity. The covariance of naphthalene mole fraction with velocity indicates that an ejection mechanism is transporting low-momentum, high-scalar-concentration fluid away from the wall, resulting in the protrusions of naphthalene vapor evident in the instantaneous PLIF images. Lastly, naphthalene PLIF was used to visualize the dispersion of gas-phase ablation products on a scaled Orion capsule model at four different angles of attack at Mach 5. High concentrations of scalar were imaged in the capsule recirculation region. Additionally, intermittent turbulent structures were visualized on the heat shield surface, particularly for the 12° and 52° AoA cases.
Book Synopsis Diagnostics and Modeling in SI Engines by : Society of Automotive Engineers
Download or read book Diagnostics and Modeling in SI Engines written by Society of Automotive Engineers and published by SAE International. This book was released on 1996 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721932153 Total Pages :202 pages Book Rating :4.9/5 (321 download)
Book Synopsis Laser-Induced Fluorescence Measurements and Modeling of Nitric Oxide in Counterflow Diffusion Flames by : National Aeronautics and Space Administration (NASA)
Download or read book Laser-Induced Fluorescence Measurements and Modeling of Nitric Oxide in Counterflow Diffusion Flames written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-27 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility of making quantitative nonintrusive NO concentration ([NO]) measurements in nonpremixed flames has been assessed by obtaining laser-induced fluorescence (LIF) measurements of [NO] in counterflow diffusion flames at atmospheric and higher pressures. Comparisons at atmospheric pressure between laser-saturated fluorescence (LSF) and linear LIF measurements in four diluted ethane-air counterflow diffusion flames with strain rates from 5 to 48/s yielded excellent agreement from fuel-lean to moderately fuel-rich conditions, thus indicating the utility of a model-based quenching correction technique, which was then extended to higher pressures. Quantitative LIF measurements of [NO] in three diluted methane-air counterflow diffusion flames with strain rates from 5 to 35/s were compared with OPPDIF model predictions using the GRI (version 2.11) chemical kinetic mechanism. The comparisons revealed that the GRI mechanism underpredicts prompt-NO by 30-50% at atmospheric pressure. Based on these measurements, a modified reaction rate coefficient for the prompt-NO initiation reaction was proposed which causes the predictions to match experimental data. Temperature measurements using thin filament pyrometry (TFP) in conjunction with a new calibration method utilizing a near-adiabatic H2-air Hencken burner gave very good comparisons with model predictions in these counterflow diffusion flames. Quantitative LIF measurements of [NO] were also obtained in four methane-air counterflow partially-premixed flames with fuel-side equivalence ratios (phi(sub B)) of 1.45, 1.6, 1.8 and 2.0. The measurements were in excellent agreement with model predictions when accounting for radiative heat loss. Spatial separation between regions dominated by the prompt and thermal NO mechanisms was observed in the phi(sub B) = 1.45 flame. The modified rate coefficient proposed earlier for the prompt-NO initiation reaction improved agreement between code predictions and measurements in the re
Book Synopsis Rapid Concentration Measurements by Picosecond Time-Resolved Laser-Induced Fluorescence by :
Download or read book Rapid Concentration Measurements by Picosecond Time-Resolved Laser-Induced Fluorescence written by and published by . This book was released on 1998 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantitative measurements of scalars in combustion are crucial to our understanding of flame structure and pollutant production. Progress has been made in quantitatively characterizing many laminar flames; however, the inherent fluctuations in turbulent flames significantly complicate such measurements. Picosecond time-resolved laser-induced fluorescence (PITLIF) is a developing technique which seeks to provide the first known means of obtaining quantitative minor-species concentrations in flames at rates sufficient for the study of turbulent fluctuations. This method was developed and applied to measurements of sodium and OH concentrations in laminar flames under previous AFOSR funding. The present report details the construction of a second generation PITLIF instrument. The primary goal of this work is to provide a continuous time series of quantitative concentrations from which frequency domain statistics such as the power spectral density (PSD) can be computed. Using the new laser system, fluorescence measurements of CH and OH time series were collected in a variety of methane and hydrogen flames including nonpremixed turbulent flames. These data have also been compared with available velocity and temperature measurements. The time series and resulting PSDs represent the first measurements of these statistics for minor-species concentrations.
