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Numerical Investigation Of Film Cooling Fluid Flow And Heat Transfer Using Large Eddy Simulations
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Book Synopsis Numerical Investigation of Film Cooling Fluid Flow and Heat Transfer Using Large Eddy Simulations by : David Houston Leedom
Download or read book Numerical Investigation of Film Cooling Fluid Flow and Heat Transfer Using Large Eddy Simulations written by David Houston Leedom and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flow and Heat Transfer Predictions for Film-Cooling Flows Using Large Eddy Simulations by : Mayank Tyagi
Download or read book Flow and Heat Transfer Predictions for Film-Cooling Flows Using Large Eddy Simulations written by Mayank Tyagi and published by . This book was released on 2001 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large eddy simulations are performed to study the flow physics and heat transfer for the film-cooling of gas turbine blade surface. The coolant jet issues out from a cylindrical delivery tube into the mainflow at an inclination angle of 35 degrees. The Reynolds number based on the jet velocity and the diameter of the delivery tube is approximately 11100. The jet to mainflow velocity ratio is 0.5. Heat transfer calculations are also performed simultaneously to study the mixing of the passive scalar with the mainflow, evaluate film-cooling effectiveness and heat transfer predictions on the blade surface. The parameters in the simulation correspond to the experiments performed at UTRC (Lavrich and Chiappetta, 1990).
Book Synopsis Large Eddy Simulations and Turbulence Modeling for Film Cooling by : Sumanta Acharya
Download or read book Large Eddy Simulations and Turbulence Modeling for Film Cooling written by Sumanta Acharya and published by . This book was released on 1999 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical investigation of film cooling in a supersonic main flow and heat transfer phenomena in a subsonic environment by : Vassilios Stephanidis
Download or read book Numerical investigation of film cooling in a supersonic main flow and heat transfer phenomena in a subsonic environment written by Vassilios Stephanidis and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impingement Jet Cooling in Gas Turbines by : R.S. Amano
Download or read book Impingement Jet Cooling in Gas Turbines written by R.S. Amano and published by WIT Press. This book was released on 2014-05-28 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the requirement for enhanced cooling technologies on modern gas turbine engines, advanced research and development has had to take place in field of thermal engineering. Among the gas turbine cooling technologies, impingement jet cooling is one of the most effective in terms of cooling effectiveness, manufacturability and cost. The chapters contained in this book describe research on state-of-the-art and advanced cooling technologies that have been developed, or that are being researched, with a variety of approaches from theoretical, experimental, and CFD studies. The authors of the chapters have been selected from some of the most active researchers and scientists on the subject. This is the first to book published on the topics of gas turbines and heat transfer to focus on impingement cooling alone.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781719395434 Total Pages :28 pages Book Rating :4.3/5 (954 download)
Book Synopsis Development of the Glenn Heat-Transfer (Glenn-Ht) Computer Code to Enable Time-Filtered Navier-Stokes (Tfns) Simulations and Application to Film Cooling on a Flat Plate Through Long Cooling Tubes by : National Aeronautics and Space Administration (NASA)
Download or read book Development of the Glenn Heat-Transfer (Glenn-Ht) Computer Code to Enable Time-Filtered Navier-Stokes (Tfns) Simulations and Application to Film Cooling on a Flat Plate Through Long Cooling Tubes written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-22 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational fluid dynamics (CFD) analysis using Reynolds-averaged Navier-Stokes (RANS) formulation for turbomachinery-related flows has enabled improved engine component designs. RANS methodology has limitations that are related to its inability to accurately describe the spectrum of flow phenomena encountered in engines. Examples of flows that are difficult to compute accurately with RANS include phenomena such as laminar/turbulent transition, turbulent mixing due to mixing of streams, and separated flows. Large eddy simulation (LES) can improve accuracy but at a considerably higher cost. In recent years, hybrid schemes that take advantage of both unsteady RANS and LES have been proposed. This study investigated an alternative scheme, the time-filtered Navier-Stokes (TFNS) method applied to compressible flows. The method developed by Shih and Liu was implemented in the Glenn-Heat-Transfer (Glenn-HT) code and applied to film-cooling flows. In this report the method and its implementation is briefly described. The film effectiveness results obtained for film cooling from a row of 30deg holes with a pitch of 3.0 diameters emitting air at a nominal density ratio of unity and two blowing ratios of 0.5 and 1.0 are shown. Flow features under those conditions are also described. Ameri, Ali and Shyam, Vikram and Rigby, David and Poinsatte, Phillip and Thurman, Douglas and Steinthorsson, Erlendur Glenn Research Center COMPUTATIONAL FLUID DYNAMICS; FILM COOLING; FLAT PLATES; NAVIER-STOKES EQUATION; LARGE EDDY SIMULATION; HEAT TRANSFER; REYNOLDS AVERAGING; FREE FLOW; COMPUTER PROGRAMS; TURBULENT FLOW; TURBOMACHINERY
Book Synopsis Gas Turbine Heat Transfer and Cooling Technology, Second Edition by : Je-Chin Han
Download or read book Gas Turbine Heat Transfer and Cooling Technology, Second Edition written by Je-Chin Han and published by CRC Press. This book was released on 2012-11-27 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive reference for engineers and researchers, Gas Turbine Heat Transfer and Cooling Technology, Second Edition has been completely revised and updated to reflect advances in the field made during the past ten years. The second edition retains the format that made the first edition so popular and adds new information mainly based on selected published papers in the open literature. See What’s New in the Second Edition: State-of-the-art cooling technologies such as advanced turbine blade film cooling and internal cooling Modern experimental methods for gas turbine heat transfer and cooling research Advanced computational models for gas turbine heat transfer and cooling performance predictions Suggestions for future research in this critical technology The book discusses the need for turbine cooling, gas turbine heat-transfer problems, and cooling methodology and covers turbine rotor and stator heat-transfer issues, including endwall and blade tip regions under engine conditions, as well as under simulated engine conditions. It then examines turbine rotor and stator blade film cooling and discusses the unsteady high free-stream turbulence effect on simulated cascade airfoils. From here, the book explores impingement cooling, rib-turbulent cooling, pin-fin cooling, and compound and new cooling techniques. It also highlights the effect of rotation on rotor coolant passage heat transfer. Coverage of experimental methods includes heat-transfer and mass-transfer techniques, liquid crystal thermography, optical techniques, as well as flow and thermal measurement techniques. The book concludes with discussions of governing equations and turbulence models and their applications for predicting turbine blade heat transfer and film cooling, and turbine blade internal cooling.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721082490 Total Pages :138 pages Book Rating :4.0/5 (824 download)
Book Synopsis Large Eddy Simulations and Turbulence Modeling for Film Cooling by : National Aeronautics and Space Administration (NASA)
Download or read book Large Eddy Simulations and Turbulence Modeling for Film Cooling written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-13 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the research is to perform Direct Numerical Simulations (DNS) and Large Eddy Simulations (LES) for film cooling process, and to evaluate and improve advanced forms of the two equation turbulence models for turbine blade surface flow analysis. The DNS/LES were used to resolve the large eddies within the flow field near the coolant jet location. The work involved code development and applications of the codes developed to the film cooling problems. Five different codes were developed and utilized to perform this research. This report presented a summary of the development of the codes and their applications to analyze the turbulence properties at locations near coolant injection holes. Acharya, Sumanta Glenn Research Center NAG3-1641; RTOP 538-12-10
Book Synopsis Unsteady Turbulent Flow Modelling and Applications by : David Roos Launchbury
Download or read book Unsteady Turbulent Flow Modelling and Applications written by David Roos Launchbury and published by Springer. This book was released on 2016-01-28 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: The master thesis of David Roos Launchbury deals with the implementation and validation of a numerical solver for incompressible large eddy simulation (LES) with heat transfer in OpenFOAM. Academic and industrial cases, ranging from flow between parallel plates to film cooling, are investigated utilising existing and newly-implemented turbulence models. Simulations using no turbulence models, i.e. under-resolved DNS (UDNS) simulations, are performed for comparison. Very good results are obtained in all cases with variations among the individual models, with the UDNS simulations performing surprisingly well. The study shows that the developed software is able to simulate complex cases reliably and accurately.
Book Synopsis Proceedings of the 26th National Conference on Fluid Mechanics and Fluid Power by : B. Maiti
Download or read book Proceedings of the 26th National Conference on Fluid Mechanics and Fluid Power written by B. Maiti and published by Allied Publishers. This book was released on 1999 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Flow and Heat Transfer Around a Single Flared Film Cooling Hole by : B. L. Lapworth
Download or read book A Study of the Flow and Heat Transfer Around a Single Flared Film Cooling Hole written by B. L. Lapworth and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multiscale and Multiresolution Approaches in Turbulence by : Pierre Sagaut
Download or read book Multiscale and Multiresolution Approaches in Turbulence written by Pierre Sagaut and published by World Scientific. This book was released on 2013 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book aims to provide the reader with an updated general presentation of multiscale/multiresolution approaches in turbulent flow simulations. All modern approaches (LES, hybrid RANS/LES, DES, SAS) are discussed and recast in a global comprehensive framework. Both theoretical features and practical implementation details are addressed. Some full scale applications are described, to provide the reader with relevant guidelines to facilitate a future use of these methods.
Book Synopsis Advanced Computational Fluid and Aerodynamics by : Paul G. Tucker
Download or read book Advanced Computational Fluid and Aerodynamics written by Paul G. Tucker and published by Cambridge University Press. This book was released on 2016-03-15 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book outlines the computational fluid dynamics evolution and gives an overview of the methods available to the engineer.
Book Synopsis Heat Transfer in Gas Turbines by : Bengt Sundén
Download or read book Heat Transfer in Gas Turbines written by Bengt Sundén and published by Witpress. This book was released on 2001 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title presents and reflects current active research on various heat transfer topics and related phenomena in gas turbine systems. It begins with a general introduction to gas turbine heat transfer, before moving on to specific areas.
Download or read book Modelling Fluid Flow written by János Vad and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling Fluid Flow presents invited lectures, workshop summaries and a selection of papers from a recent international conference CMFF '03 on fluid technology. The lectures follow the current evolution and the newest challenges of the computational methods and measuring techniques related to fluid flow. The workshop summaries reflect the recent trends, open questions and unsolved problems in the mutually inspiring fields of experimental and computational fluid mechanics. The papers cover a wide range of fluids engineering, including reactive flow, chemical and process engineering, environmental fluid dynamics, turbulence modelling, numerical methods, and fluid machinery.
Book Synopsis Unsteady Computational Fluid Dynamics in Aeronautics by : P.G. Tucker
Download or read book Unsteady Computational Fluid Dynamics in Aeronautics written by P.G. Tucker and published by Springer Science & Business Media. This book was released on 2013-08-30 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of Large Eddy Simulation (LES) and hybrids is a vibrant research area. This book runs through all the potential unsteady modelling fidelity ranges, from low-order to LES. The latter is probably the highest fidelity for practical aerospace systems modelling. Cutting edge new frontiers are defined. One example of a pressing environmental concern is noise. For the accurate prediction of this, unsteady modelling is needed. Hence computational aeroacoustics is explored. It is also emerging that there is a critical need for coupled simulations. Hence, this area is also considered and the tensions of utilizing such simulations with the already expensive LES. This work has relevance to the general field of CFD and LES and to a wide variety of non-aerospace aerodynamic systems (e.g. cars, submarines, ships, electronics, buildings). Topics treated include unsteady flow techniques; LES and hybrids; general numerical methods; computational aeroacoustics; computational aeroelasticity; coupled simulations and turbulence and its modelling (LES, RANS, transition, VLES, URANS). The volume concludes by pointing forward to future horizons and in particular the industrial use of LES. The writing style is accessible and useful to both academics and industrial practitioners. From the reviews: "Tucker's volume provides a very welcome, concise discussion of current capabilities for simulating and modellng unsteady aerodynamic flows. It covers the various pos sible numerical techniques in good, clear detail and presents a very wide range of practical applications; beautifully illustrated in many cases. This book thus provides a valuable text for practicing engineers, a rich source of background information for students and those new to this area of Research & Development, and an excellent state-of-the-art review for others. A great achievement." Mark Savill FHEA, FRAeS, C.Eng, Professor of Computational Aerodynamics Design & Head of Power & Propulsion Sciences, Department of Power & Propulsion, School of Engineering, Cranfield University, Bedfordshire, U.K. "This is a very useful book with a wide coverage of many aspects in unsteady aerodynamics method development and applications for internal and external flows." L. He, Rolls-Royce/RAEng Chair of Computational Aerothermal Engineering, Oxford University, U.K. "This comprehensive book ranges from classical concepts in both numerical methods and turbulence modelling approaches for the beginner to latest state-of-the-art for the advanced practitioner and constitutes an extremely valuable contribution to the specific Computational Fluid Dynamics literature in Aeronautics. Student and expert alike will benefit greatly by reading it from cover to cover." Sébastien Deck, Onera, Meudon, France
