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Application Of The Discrete Transfer Model Of Thermal Radiation In A Cfd Simulation Of Diesel Engine Combustion And Heat Transfer
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Book Synopsis Application of the Discrete Transfer Model of Thermal Radiation in a CFD Simulation of Diesel Engine Combustion and Heat Transfer by : C. A. Blunsdon
Download or read book Application of the Discrete Transfer Model of Thermal Radiation in a CFD Simulation of Diesel Engine Combustion and Heat Transfer written by C. A. Blunsdon and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Radiation on Diesel Engine Combustion and Heat Transfer by : Takeshi Yoshikawa
Download or read book Effect of Radiation on Diesel Engine Combustion and Heat Transfer written by Takeshi Yoshikawa and published by . This book was released on 2008 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Internal Combustion Engines by : Colin R. Ferguson
Download or read book Internal Combustion Engines written by Colin R. Ferguson and published by John Wiley & Sons. This book was released on 2015-07-01 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of the Second Edition in 2001, there have been considerable advances and developments in the field of internal combustion engines. These include the increased importance of biofuels, new internal combustion processes, more stringent emissions requirements and characterization, and more detailed engine performance modeling, instrumentation, and control. There have also been changes in the instructional methodologies used in the applied thermal sciences that require inclusion in a new edition. These methodologies suggest that an increased focus on applications, examples, problem-based learning, and computation will have a positive effect on learning of the material, both at the novice student, and practicing engineer level. This Third Edition mirrors its predecessor with additional tables, illustrations, photographs, examples, and problems/solutions. All of the software is ‘open source’, so that readers can see how the computations are performed. In addition to additional java applets, there is companion Matlab code, which has become a default computational tool in most mechanical engineering programs.
Download or read book I.C. Engines And Combustion written by and published by Allied Publishers. This book was released on with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modelling Diesel Combustion by : P. A. Lakshminarayanan
Download or read book Modelling Diesel Combustion written by P. A. Lakshminarayanan and published by Springer Nature. This book was released on 2022-01-21 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprehensively discusses diesel combustion phenomena like ignition delay, fuel-air mixing, rate of heat release, and emissions of smoke, particulate and nitric oxide. It enables quantitative evaluation of these important phenomena and parameters. Most importantly, it attempts to model them with constants that are independent of engine types and hence they could be applied by the engineers and researchers for a general engine. This book emphasizes the importance of the spray at the wall in precisely describing the heat release and emissions for most of the engines on and off-road. It gives models for heat release and emissions. Every model is thoroughly validated by detailed experiments using a broad range of engines. The book describes an elegant quasi-one-dimensional model for heat release in diesel engines with single as well as multiple injections. The book describes how the two aspects, namely, fuel injection rate and the diameter of the combustion bowl in the piston, have enabled meeting advanced emission, noise, and performance standards. The book also discusses the topics of computational fluid dynamics encompassing RANS and LES models of turbulence. Given the contents, this book will be useful for students, researchers and professionals working in the area of vehicle engineering and engine technology. This book will also be a good professional book for practising engineers in the field of combustion engines and automotive engineering.
Book Synopsis Radiation Heat Transfer Modelling with Computational Fluid Dynamics by : Yehuda Sinai
Download or read book Radiation Heat Transfer Modelling with Computational Fluid Dynamics written by Yehuda Sinai and published by CRC Press. This book was released on 2022-06-21 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book serves as a preliminary reference for the principles of thermal radiation and its modelling in computational fluid dynamics (CFD) simulations. Radiation Heat Transfer Modelling with Computational Fluid Dynamics covers strategies and processes for synthesizing radiation with CFD setups, computational techniques for solving the radiative transfer equation, the strengths and weaknesses thereof, boundary and initial conditions and relevant guidelines. Describing the strategic planning of a typical project, the book includes the spectroscopic properties of gases, some particulates and porous media. FEATURES Fills a gap between existing CFD and thermal radiation textbooks and elaborates on some aspects of user manuals. Aims at (1) CFD practitioners who are newcomers to thermal radiation and are looking for a preliminary introduction thereon and (2) modellers familiar with thermal radiation looking for a precursory introduction to CFD. The book is tilted somewhat towards the first group. Provides guidelines for choosing the right model, the strategic planning of the modelling and its implementation. Outlines the pitfalls of some solution techniques. Describes how radiation is included in the variety of boundary condition types offered by CFD codes. Helps to develop the practical skills required to plan, implement and interpret thermal radiation within the typical CFD code. Addresses a wide variety of physical circumstances in which thermal radiation plays a role. Offers ample references for readers searching for additional details. Includes several examples of practical applications, including fire, a utility boiler and car headlights in cold environments. This book is intended for researchers and professionals who wish to simulate problems that involve fluid flow and heat transfer with thermal radiation.
Book Synopsis A Theoretical and Experimental Study of Emissions Modeling for Diesel Engines with Comparisons to In-cylinder Imaging by : Gregory James Hampson
Download or read book A Theoretical and Experimental Study of Emissions Modeling for Diesel Engines with Comparisons to In-cylinder Imaging written by Gregory James Hampson and published by . This book was released on 1997 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simulation of High Pressure Sprays and Radiative Heat Transfer in Internal Combustion Engines by : Zongyu Yue
Download or read book Simulation of High Pressure Sprays and Radiative Heat Transfer in Internal Combustion Engines written by Zongyu Yue and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: High pressure fuel injection is a crucial process that impacts the subsequent steps of mixture preparation, ignition and combustion in diesel or gasoline direct injection engines. Experimental studies have revealed the mixing-controlled and local phase equilibrium characteristics of liquid vaporization in high injection pressure engine sprays. In this study an Equilibrium Phase (EP) spray model is explored. The model is developed based on jet theory and the phase equilibrium assumption, without modeling drop breakup, collision and finite-rate interfacial vaporization processes. The model development is carried out in an advanced version of KIVA-3vr2. The presently proposed EP spray model is validated extensively in simulations of the ECN Spray A, and in an optical diesel engine and in DISI gasoline sprays. The predictions of liquid/vapor penetration, fuel mass fraction distribution, heat release rate and emission formation are in good agreement with experimental data. In addition, good computational efficiency and grid-independency are also seen with the present EP model. The examined operating conditions cover wide ranges that are relevant to IC engines, which are 700-1400 K, 7.6-22.8 kg/m3 for diesel sprays, and 500-900 K, 3-9 kg/m3 for gasoline DISI sprays, respectively. Thermal radiation is another topic of interest in this work since it accounts for an important mechanism of heat transfer in engine combustion. The role of thermal radiation in engine combustion is investigated by implementing the Discrete Ordinate Method (DOM) model and the narrowband model into CFD code together with the EP spray model. Engine simulation results show that radiative heat loss accounts for about 9-18% of the total wall heat loss for operating loads from 4 to 14.5 bar gIMEP. A strong correlation is found between the global equivalence ratio and the fraction of radiative heat loss to total wall heat loss, which even applies in low temperature combustion modes. The participating gases of CO2, H2O and CO are found to be the dominant source of thermal radiation due to their abundancy in high temperature regions. Also, the cooling effect of thermal radiation is shown to have significant impact on the prediction of soot emissions.
Book Synopsis Modeling Ignition and Combustion Processes in Compression Ignited Engines by : Song-Charng Kong
Download or read book Modeling Ignition and Combustion Processes in Compression Ignited Engines written by Song-Charng Kong and published by . This book was released on 1992 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1992 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radiative Heat Transfer in Turbulent Combustion Systems by : Michael F. Modest
Download or read book Radiative Heat Transfer in Turbulent Combustion Systems written by Michael F. Modest and published by Springer. This book was released on 2016-01-06 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: This introduction reviews why combustion and radiation are important, as well as the technical challenges posed by radiation. Emphasis is on interactions among turbulence, chemistry and radiation (turbulence-chemistry-radiation interactions – TCRI) in Reynolds-averaged and large-eddy simulations. Subsequent chapters cover: chemically reacting turbulent flows; radiation properties, Reynolds transport equation (RTE) solution methods, and TCRI; radiation effects in laminar flames; TCRI in turbulent flames; and high-pressure combustion systems. This Brief presents integrated approach that includes radiation at the outset, rather than as an afterthought. It stands as the most recent developments in physical modeling, numerical algorithms, and applications collected in one monograph.
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 Handbook of Thermal Management of Engines by : P. A. Lakshminarayanan
Download or read book Handbook of Thermal Management of Engines written by P. A. Lakshminarayanan and published by Springer Nature. This book was released on 2022-01-01 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook deals with the vast subject of thermal management of engines and vehicles by applying the state of the art research to diesel and natural gas engines. The contributions from global experts focus on management, generation, and retention of heat in after-treatment and exhaust systems for light-off of NOx, PM, and PN catalysts during cold start and city cycles as well as operation at ultralow temperatures. This book will be of great interest to those in academia and industry involved in the design and development of advanced diesel and CNG engines satisfying the current and future emission standards.
Book Synopsis Use of CFD Codes for Calculation of Radiation Heat Transfer: From Validation to Application by : Boštjan Končar
Download or read book Use of CFD Codes for Calculation of Radiation Heat Transfer: From Validation to Application written by Boštjan Končar and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In complex geometries, computational fluid dynamic (CFD) codes are commonly used to predict the heat and fluid transfer. To justify their use for the applications with dominant radiation heat transfer conditions, the implemented models need to be first appropriately validated on simple benchmark examples where the analytical solutions exist. The practical application discussed in this chapter considers the thermal radiation inside the vacuum vessel of the fusion reactor. Two representative benchmark examples are used to obtain the analytical solution and assess the accuracy of the real case simulations performed by CFD codes. The analytical solutions use the view factor method to calculate the net radiation heat flux on each radiating surface. Several numerical methods are available in the CFD codes to solve the thermal radiation problems. The discrete transfer method (DTM) is considered as one of the most efficient for solving the radiation fluxes between the surfaces in the case of radiatively non-participating fluid. Discussion includes description of fundamentals of analytical and numerical thermal radiation methods, validation of radiative heat exchange in simple enclosure problems, estimation of numerical errors and application to the practical case.
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 1999 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fire, Combustion, and Hazardous Waste Processing by : Sumanta Acharya
Download or read book Fire, Combustion, and Hazardous Waste Processing written by Sumanta Acharya and published by . This book was released on 1994 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CFD Prediction of Coupled Radiation Heat Transfer and Soot Production in Turbulent Flames by :
Download or read book CFD Prediction of Coupled Radiation Heat Transfer and Soot Production in Turbulent Flames written by and published by . This book was released on 1906 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The mechanisms governing the formation and destruction of soot in turbulent combustion are intimately coupled to thermal radiation due to the strong dependence of sooting processes and radiative loss on temperature. Detailed computational fluid dynamics (CFD) predictions of the radiative and soot output from turbulent non-premixed flames are normally performed by parabolic algorithms. However, the modelling of combustion systems, such as furnaces and unwanted enclosure fires, often require a fully elliptic description of the flow field and its related physical phenomena. Thus, this thesis investigates the intimate coupling between radiative energy exchange and the mechanisms governing soot formation and destruction within a three-dimensional, general curvilinear CFD code. Thermal radiation is modelled by the discrete transfer radiation model (DTRM). Special emphasis is given to approximate solutions to the radiative transfer equation encompassing various models for the radiative properties of gases and soot. A new algorithm is presented, entitled the differential total absorptivity (DTA) solution, which, unlike alternative solutions, incorporates the source temperature dependence of absorption. Additionally, a weighted sum of gray gases (WSGG) solution is described which includes the treatment of gray boundaries. Whilst the DTA solution is particularly recommended for systems comprising large temperature differences, the WSGG solution is deemed most appropriate for numerical simulation of lower temperature diffusion flames, due to its significant time advantage. The coupling between radiative loss and soot concentration is investigated via a multiple laminar flamelet concept applied within the CFD simulation of confined turbulent diffusion flames burning methane in air at 1 and 3 atm. Flamelet families are employed relating individual sooting mechanisms to the level of radiative loss, which is evaluated by the DTRM formulated for emitting-absorbing mixtures of soot,
