Download or read book Effect of high freestream turbulence with large length scale on blade heat mass transfer ASME 98 GT 107 written by H. P. Wang and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine & Aeroengine Congress & Exhibition, Stockholm, Sweden, June 2 - June 5, 1998.
Download or read book ASME Technical Papers written by and published by . This book was released on 1999 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the ASME Turbo Expo 2002 written by and published by . This book was released on 2002 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Volumes 3A and 3B are part of a five-volume set comprising the proceedings of the June 2002 conference held in the Netherlands. Approximately 125 articles address heat transfer, and manufacturing materials and metallurgy. A sampling of topics: the effect of freestream turbulence on film cooling adiabatic effectiveness; the influence of periodic unsteady inflow conditions on leading edge film cooling; and fluid dynamcis of a pre-swirl rotor-stator system. No subject index. Annotation c. Book News, Inc., Portland, OR (booknews.com).
Download or read book Paper written by and published by . This book was released on 1999 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbulence intensity length scale and heat transfer around stagnation line of cylinder and model blade ASME 99 GT 423 written by V. P. Maslov and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine & Aeroengine Congress & Exhibition, Indianapolis, Indiana, Jun 7-Jun 10, 1999.
Download or read book Proceedings of the ASME Turbo Expo 2002 Presented at the 2002 ASME Turbo Expo June 3 6 2002 Amsterdam the Netherlands written by and published by . This book was released on 2002 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation This is Volume 1 of five volumes that comprise the proceedings of the June 2002 conference, sponsored by the International Gas Turbine Institute (IGTI), a technical institute of the American Society of Mechanical Engineers. The purpose of the conference was to facilitate international exchange and development of educational and technical information related to the design, application, manufacture, operation, maintenance, and environmental impact of all types of gas engines. With an emphasis upon the need for more efficient, cleaner, and more reliable gas turbines, the approximately 130 articles cover various technical aspects of aircraft engines; coal, biomass, and alternative fuels; combustion and fuels; education; electric power; and vehicular and small turbomachines. There is no subject index. Annotation c. Book News, Inc., Portland, OR (booknews.com).
Download or read book Proceedings of the ASME Turbo Expo written by and published by . This book was released on 2002 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Jet grid Turbulence on Turbulent Boundary Layer Flow and Heat Transfer written by Chung-Der Young and published by . This book was released on 1989 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Free Stream Turbulence Effects on Stagnation Point Turbulence and Heat Transfer written by and published by . This book was released on 1996 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stagnation point flow and heat transfer under free-stream turbulence was studied. A new code and an optimized scheme were developed for this study. The optimized scheme was found to significantly save the computational cost. In addition, methods for prescribing realistic inflow turbulence were developed. Simulations with organized inflow disturbances were conducted to study the effect of spanwise length scale and intensity on the enhancement of wall heat transfer and skin friction. Three regimes were identified depending on the spanwise length scale, 'damping', 'attached amplifying', and 'detached amplifying' regimes. In the attached amplifying regime the enhancement of skin friction and heat transfer increases with the intensity of the inflow disturbance, but saturates for larger spanwise length scales. In all cases studied the heat transfer enhancement was 4-5 times larger than the skin friction enhancement. Finally, direct numerical simulations (DNS) of stagnation point flow with moderate grid resolution were conducted to study turbulence statistics. Mean profiles of u velocity and temperature were compared with laminar profiles, and the statistics of turbulence kinetic energy were obtained. The simulations have not completed yet, and preliminary results are included in this report.
Download or read book Multiple Scale kappa epsilon Turbulence Modeling of the Transitional Boundary Layer for Elevated Freestream Turbulence Levels written by and published by . This book was released on 1996 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book An algebraic model for high intensity large scale turbulence ASME 99 GT 160 written by F. E. Ames and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine & Aeroengine Congress & Exhibition, Indianapolis, Indiana, June 7-10, 1999.
Download or read book Simulation of Freestream High Intensity Turbulence Effect on Heat Transfer of Wall Boundary Layer written by Vladimir A. Aleksin and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Freestream Turbulence on Boundary Layer Loss Generation written by Kanika Gakhar and published by . This book was released on 2020 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes an analysis of the effect of freestream turbulence (FST) on turbulent boundary layer loss generation. A relation has been derived between a turbulence parameter, which characterizes the FST, and the increase in boundary layer dissipation coefficient. The relation gives guidelines for trade studies, for example between combustor turbulence properties and turbine performance in a typical gas turbine engine. Based on the FST length-scale, two regimes of FST influence have been defined, with consequent different functional dependencies between FST parameters and boundary layer dissipation coefficient. In one regime, characterized by self-similarity of mean velocity and turbulence production profiles, the dissipation coefficient is a function of local parameters, and can be determined using measurement data for effects of FST on skin-friction. In the second regime, the boundary layer deviates from equilibrium due to the lag between the rate of turbulence production and dissipation. For this latter case, a method has been developed to estimate the effect of FST on dissipation using a modified shear-lag model, based on the conservation of turbulent kinetic energy. This thesis shows that the increase in boundary layer loss due to local FST can be as high as 73%, and that non-equilibrium effects can result in an additional increase in boundary layer loss as high as 8%. Finally, the framework developed in this thesis has also been applied to an industry relevant situation, quantifying the effect of combustor turbulence on high pressure turbine (HPT) performance. Example trade studies show that increasing the size of dilution ports, increasing the length of the combustor, and rearranging or re-orienting the dilution jets in cross-flow in the combustor all can help decrease HPT profile loss generation, and potentially increase stage efficiency up to 0.5%.
Download or read book Shock Wave Boundary Layer Interactions written by Holger Babinsky and published by Cambridge University Press. This book was released on 2011-09-12 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shock wave-boundary-layer interaction (SBLI) is a fundamental phenomenon in gas dynamics that is observed in many practical situations, ranging from transonic aircraft wings to hypersonic vehicles and engines. SBLIs have the potential to pose serious problems in a flowfield; hence they often prove to be a critical - or even design limiting - issue for many aerospace applications. This is the first book devoted solely to a comprehensive, state-of-the-art explanation of this phenomenon. It includes a description of the basic fluid mechanics of SBLIs plus contributions from leading international experts who share their insight into their physics and the impact they have in practical flow situations. This book is for practitioners and graduate students in aerodynamics who wish to familiarize themselves with all aspects of SBLI flows. It is a valuable resource for specialists because it compiles experimental, computational and theoretical knowledge in one place.
Download or read book Gas Turbine Blade Cooling written by Chaitanya D Ghodke and published by SAE International. This book was released on 2018-12-10 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas turbines play an extremely important role in fulfilling a variety of power needs and are mainly used for power generation and propulsion applications. The performance and efficiency of gas turbine engines are to a large extent dependent on turbine rotor inlet temperatures: typically, the hotter the better. In gas turbines, the combustion temperature and the fuel efficiency are limited by the heat transfer properties of the turbine blades. However, in pushing the limits of hot gas temperatures while preventing the melting of blade components in high-pressure turbines, the use of effective cooling technologies is critical. Increasing the turbine inlet temperature also increases heat transferred to the turbine blade, and it is possible that the operating temperature could reach far above permissible metal temperature. In such cases, insufficient cooling of turbine blades results in excessive thermal stress on the blades causing premature blade failure. This may bring hazards to the engine's safe operation. Gas Turbine Blade Cooling, edited by Dr. Chaitanya D. Ghodke, offers 10 handpicked SAE International's technical papers, which identify key aspects of turbine blade cooling and help readers understand how this process can improve the performance of turbine hardware.
Download or read book Aeroacoustics of Flight Vehicles written by Harvey H. Hubbard and published by . This book was released on 1991 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
