Download or read book A Study on Droplets Evaporation at Diesel Spray Boundary During Ignition Delay Period written by and published by . This book was released on 2007 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study on Droplet Evaporation of Diesel Spray at Spray Boundary During Ignition Delay Period written by Abdul Adam Abdullah and published by . This book was released on 2007 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaporation and Ignition Delay of Fuel and Emulsion Droplets written by Kuan-Jen Jeng and published by . This book was released on 1986 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ignition Delay at Various High Pressures An Experimental Study written by Ritu Gaur and published by . This book was released on 2019-10-16 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research Paper (postgraduate) from the year 2019 in the subject Engineering - Chemical Engineering, course: M.TECH, language: English, abstract: This work is an experimental study for the measurement of ignition delay characteristics of burning fuel sprays in cylindrical combustion chambers. It is carried out on hot air and high pressure. The objective of the study is to investigation the effect of hot air temperature and a well as high pressure on ignition delay of diesel fuel sprays. The effect of blending of n-Pentane with pure diesel was investigated. An experimental set up was design for this purpose with the emphasis on optical method for measurement of ignition delay at various pressures. The results presented here show that ignition delay of diesel fuel spray decreases with increase in the temperature and pressure of hot air. Results also show the effect of methyl group being more dominant at low ignition temperatures and that of alkyl group being more dominant at higher temperature. Blending of n-pentane with diesel fuel, increase its ignition delay at low ignition temperatures. However, as the concentration of blending fuel was increased beyond 30%, the ignition temperature increase. Ignition temperature for 40% pentane blends is much higher that the pure diesel.

Download or read book A Numerical Study of the Impacts of Volatile Component Blending on Diesel Spray Evaporation and Combustion written by and published by . This book was released on 2002 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multiphase computational fluid dynamics (CFD) code is used to simulate the evaporation and combustion processes of a diesel spray blended with a highly volatile component. The CFD code uses an Eulerian approach to model the liquid phase of diesel fuel with components of different boiling temperatures. The approach divides the droplets into size groups and assigns different boiling temperatures for each group. The CFD code accounts for liquid droplet flow, turbulent mixing, interfacial drag and heat transfer, droplet evaporation and combustion, radiation heat transfer, and pollutant kinetics. Using the code, a parametric study was conducted to investigate the impacts of a volatile component on the spray evaporation and combustion characteristics. The results indicate that the blending of a highly volatile component can have an impact on droplet evaporation rate and that thermal radiation is significant in spray combustion due to the formation of soot.

Download or read book A Study of Droplet Velocity and Diameter Measurements in a Reacting Diesel Spray Produced by a Flow blurring Injector written by Yasin Gokmen and published by . This book was released on 2018 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: In many combustion applications such as gas turbines, liquid fuel atomization is important to obtain lower emissions of nitrogen oxides (NOx), carbon monoxide (CO), unburned hydrocarbons (UHCs), and soot particles. Thus, understanding spray characteristics is essential for determining how fuel and air mix with each other and subsequently combustion takes place. In this experimental study, Phase Doppler particle analyzer (PDPA) and OH* Chemiluminescence (CL) imaging techniques are employed as a diagnostic technique to monitor the spray characteristics in the cold and reacting regions of a diesel spray flame using a flow-blurring (FB) injector. PDPA is a well-known technique to measure the diameter and velocity of spherical particles. PDPA is used in many research applications including fuel injection, spray, and combustion. PDPA system does not disturb the flow being measured, and thus, it is preferable over intrusive measurement techniques. A baseline case using a FB injector with a 3 mm orifice exit diameter and no inner slant is studied and operated at air to liquid mass ratio (ALR) of 2.0, heat release rate (HRR) of 60 kW, and equivalence ratio (Ï6) of 0.75. First, OH* chemiluminescence imaging is used to analyze the flame structure. Next, PDPA is used to acquire velocity and Sauter mean diameter (SMD) distributions in cold and flame regions. Then, a parametric study is performed by varying the ALR, and its influence on the diameter and velocity of the fuel droplets is investigated. The findings from OH* CL images suggest that as the ALR increases, the FB injector produces fine droplets and enhances secondary atomization to disintegrate the droplets further. Furthermore, the results show that FB injector produces finer droplets and mean axial velocity increases as ALR is increased. The Sauter mean diameter (SMD) and mean axial velocity decreases as the droplets enter the flame zone because heat released leads to droplet evaporation. Therefore, the larger droplets become finer whereas finer droplets are completely vaporized and mixed with the air.

Download or read book A Numerical Study of Spherical Droplet Vaporization in a High Pressure Environment written by Eric Warren Curtis and published by . This book was released on 1991 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Droplet Evaporation and Combustion in High Pressures written by J. Sato and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Droplets Evaporation Process of Diesel Spray Using Shadowgraph Photography Method Combined with Dual Nano spark Optical Illumination Technique written by Abdul Adam Abdullah and published by . This book was released on 2010 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Turbulence on Droplet Drag Dispersion Vaporization and Secondary Breakup in Diesel Fuel Sprays written by and published by . This book was released on 1999 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented from an experimental study of droplet phenomena in diesel engine and gas turbine combustor simulated flows. Three specific phenomena have been studied: (1) the use of exciplex fluorescence to characterize the vaporization of liquid droplets in unsteady flows, (2) the enhanced secondary breakup of liquid droplets in flows with intense turbulence, and (3) the behavior of liquid jets injected into supercritical environments.

Download or read book Analysis of Diesel Spray Characteristic at High Pressure Injection written by Norsyamsul Syazwan Mohd Nuji and published by . This book was released on 2012 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: In diesel combustion, spray evaporation and mixture formation during ignition delay period play an important role in ignition, combustion and emission production. Spray evaporation begins immediately after start of fuel injection under the condition of high ambient temperature, in particular, at the middle of the spray. Spray atomization is fast promoted at this region, leading to ignition. The ambient temperature and injection pressures affect the droplets size and the number of droplets. In this project, the fuel will be injected at various injection parameters inside spray chamber in order to study the affect of that parameter towards spray characteristics. An analysis study was performed to investigate the macroscopic spray structure and the spray characteristics of high-pressure injector for the diesel engine. The spray structure and microscopic characteristics of high-pressure diesel injector were investigated when fuel was injected at various injection pressures and different nozzle diameter. Spray developing process, spray cone angle and spray tip penetration were obtained by using the software simulation of ANSYS-FLUENT, and the quantitative result of spray characteristics will be analyzes.

Download or read book Droplets and Sprays written by Saptarshi Basu and published by Springer. This book was released on 2018-01-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on droplets and sprays relevant to combustion and propulsion applications. The book includes fundamental studies on the heating, evaporation and combustion of individual droplets and basic mechanisms of spray formation. The contents also extend to the latest analytical, numerical and experimental techniques for investigating the behavior of sprays in devices like combustion engines and gas turbines. In addition, the book explores several emerging areas like interactions between sprays and flames and the dynamic characteristics of spray combustion systems on the fundamental side, as well as the development of novel fuel injectors for specific devices on the application side. Given its breadth of coverage, the book will benefit researchers and professionals alike.

Download or read book Automotive Engineering and Mobility Research written by Rozli Zulkifli and published by Trans Tech Publications Ltd. This book was released on 2014-10-08 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of Selected, Peer Reviewed Papers from the 2nd International Conference on recent Advances in Automotive Engineering and Mobility Research (ReCAR 2013), December 16-18, 2013, Kuala Lumpur, Malaysia. The 120 papers are grouped as follows: Chapter 1: Biodiesel, Diesel and Gases Fuel, Chapter 2: Computational & Experimental Mechanics, Chapter 3: Dynamics, Control and Mechatronics, Chapter 4: Materials and Processing Technologies, Chapter 5: Engine Lubrication and Thermoengineering, Chapter 6: Internal Combustion Engine and Computational Fluid Mechanics, Chapter 7: Noise, Monitoring, Vibration and Harshness, Chapter 8: Design, Hybrid and Electric Vehicles, Chapter 9: Crash and Safety, Transportation and Ergonomics, Chapter 10: Manufacturing, Chapter 11: Magnetorheological Applications

Download or read book Engineering Applications for New Materials and Technologies written by Andreas Öchsner and published by Springer. This book was released on 2018-01-25 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the expertise, skills, and techniques needed for the development of new materials and technologies. It focuses on finite element and finite volume methods that are used for engineering simulations, and present many state-of-the-art applications and advances to highlight these methods’ importance. For example, modern joining technologies can be used to fabricate new compound or composite materials, even those formed from dissimilar component materials. These composite materials are often exposed to harsh environments, must deliver specific characteristics, and are primarily used in automotive and marine technologies, i.e., ships, amphibious vehicles, docks, offshore structures, and even robots. To achieve the desired material performance, computer-based engineering tools are widely used for simulation, data evaluation, and design processes.

Download or read book Automotive Fuels Reference Book Fourth Edition written by Paul Richards and published by SAE International. This book was released on 2023-11-15 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: The earlier editions of this title have been best-selling definitive references for those needing technical information about automotive fuels. This long-awaited latest edition has been thoroughly revised and updated, yet retains the original fundamental fuels information that readers find so useful, This book is written for those with an interest in or a need to understand automotive fuels. Because automotive fuels can no longer be developed in isolation from the engines that will convert the fuel into the power necessary to drive our automobiles, knowledge of automotive fuels will also be essential to those working with automotive engines. Small quantities of fuel additives increasingly play an important role in bridging the gap that often exists between fuel that can easily be produced and fuel that is needed by the ever-more sophisticated automotive engine. This book pulls together in a single, extensively referenced volume, the three different but related topics of automotive fuels, fuel additives, and engines, and shows how all three areas work together. It includes a brief history of automotive fuels development, followed by chapters on automotive fuels manufacture from crude oil and other fossil sources. One chapter is dedicated to the manufacture of automotive fuels and fuel blending components from renewable sources, including e-fuels. The safe handling, transport, and storage of fuels, from all sources, are covered. New combustion systems to achieve reduced emissions and increased efficiency are discussed, and the way in which the fuels’ physical and chemical characteristics affect these combustion processes and the emissions produced are included. As CO2 is now an important emission there is also discussion regarding low and non-carbon fuels and how they might be used. There is also discussion on engine fuel system development and how these different systems affect the corresponding fuel requirements. Because the book is for a global market, fuel system technologies that only exist in the legacy fleet in some markets are included. The way in which fuel requirements are developed and specified is discussed. This covers test methods from simple laboratory bench tests, through engine testing, and long-term test procedures. (ISBN 9781468605785, ISBN 9781468605792, ISBN 9781468605808, DOI 10.4271/9781468605792)

Download or read book Automotive Fuels Reference Book written by Paul Richards and published by SAE International. This book was released on 2014-03-05 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first two editions of this title, published by SAE International in 1990 and 1995, have been best-selling definitive references for those needing technical information about automotive fuels. This long-awaited new edition has been thoroughly revised and updated, yet retains the original fundamental fuels information that readers find so useful. This book is written for those with an interest in or a need to understand automotive fuels. Because automotive fuels can no longer be developed in isolation from the engines that will convert the fuel into the power necessary to drive our automobiles, knowledge of automotive fuels will also be essential to those working with automotive engines. Small quantities of fuel additives increasingly play an important role in bridging the gap that often exists between fuel that can easily be produced and fuel that is needed by the ever-more sophisticated automotive engine. This book pulls together in a single, extensively referenced volume, the three different but related topics of automotive fuels, fuel additives, and engines, and shows how all three areas work together. It includes a brief history of automotive fuels development, followed by chapters on automotive fuels manufacture from crude oil and other fossil sources. One chapter is dedicated to the manufacture of automotive fuels and fuel blending components from renewable sources. The safe handling, transport, and storage of fuels, from all sources, are covered. New combustion systems to achieve reduced emissions and increased efficiency are discussed, and the way in which the fuels’ physical and chemical characteristics affect these combustion processes and the emissions produced are included. There is also discussion on engine fuel system development and how these different systems affect the corresponding fuel requirements. Because the book is for a global market, fuel system technologies that only exist in the legacy fleet in some markets are included. The way in which fuel requirements are developed and specified is discussed. This covers test methods from simple laboratory bench tests, through engine testing, and long-term test procedures.

Download or read book Dust Explosion Dynamics written by Russell A. Ogle and published by Butterworth-Heinemann. This book was released on 2016-09-10 with total page 687 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dust Explosion Dynamics focuses on the combustion science that governs the behavior of the three primary hazards of combustible dust: dust explosions, flash fires, and smoldering. It explores the use of fundamental principles to evaluate the magnitude of combustible dust hazards in a variety of settings. Models are developed to describe dust combustion phenomena using the principles of thermodynamics, transport phenomena, and chemical kinetics. Simple, tractable models are described first and compared with experimental data, followed by more sophisticated models to help with future challenges. Dr. Ogle introduces the reader to just enough combustion science so that they may read, interpret, and use the scientific literature published on combustible dusts. This introductory text is intended to be a practical guide to the application of combustible dust models, suitable for both students and experienced engineers. It will help you to describe the dynamics of explosions and fires involving dust and evaluate their consequences which in turn will help you prevent damage to property, injury and loss of life from combustible dust accidents. Demonstrates how the fundamental principles of combustion science can be applied to understand the ignition, propagation, and extinction of dust explosions Explores fundamental concepts through model-building and comparisons with empirical data Provides detailed examples to give a thorough insight into the hazards of combustible dust as well as an introduction to relevant scientific literature