Download or read book Steady and Harmonic Predictions for a Single stage Fully Cooled Turbine written by Mark Brody Wishart and published by . This book was released on 2010 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several modeling details are considered when performing these computations; attention to detail is shown to be especially important when attempting to acquire heat-transfer predictions. A y+ sensitivity study shows that surface static-pressure predictions are relatively insensitive to y+, but heat-transfer predictions are very sensitive to changes in the y+ range. All computations utilize y+ values in the range of 1 to 10, which is required by the Spalart-Allmaras turbulence model. This study uses the distributed source term injection approach to model film cooling.
Download or read book Comparison of Steady and Time accurate Predictions with Experiment for the Aerodynamics of a Fully Cooled Single stage High pressure Turbine written by Suzanne A. Southworth and published by . This book was released on 2006 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The aerodynamics of a fully cooled single stage high-pressure turbine operating at design corrected conditions has been the subject of a thorough study involving experimental and computational work. The experimental configuration included a fully cooled, full-stage high-pressure turbine stage operating at design corrected conditions of corrected speed, flow function, and stage pressure ratio. The data reported in this thesis were obtained for a relatively low vane inlet Reynolds number condition in order to test the limits of the experimental system. The vanes and blades of the turbine and the stationary shroud immediately above the blade were instrumented. The vanes were instrumented with heat-flux gauges and pressure transducers at one span wise external location and two internal locations. The blades were instrumented with heat-flux gauges and pressure transducers at three different span wise external locations to provide external heat-flux and surface-pressure distributions, and internally with pressure transducers and miniature thermocouples to provide pressure and temperature histories within the airfoil cooling cavities. The stationary shroud was instrumented with heat-flux gauges and pressure transducers at several axial chord locations. Kulite pressure transducers were used to obtain all of the pressure data and double-sided Kapton heatflux gages were used for the heat transfer measurements on the vanes and blades while button-type gauges were used in the stationary shroud. Aerodynamic predictions were obtained using the computational fluid dynamics (CFD) codes Numeca's FINE/Turbo and Mississippi State University (MSU) Turbo, but for both calculations the addition of the film cooling gas was ignored. Further calculations are in progress that do include the film cooling, but results from those calculations are not reported herein. Both of these codes are 3D viscous codes, but FINE/Turbo was used to obtain both steady and time-accurate results while MSUTURBO was used to obtain only time-accurate results. Both FINE/Turbo and MSU Turbo utilize phase lagged boundary conditions to simplify the model and significantly reduce computing time and resources. The unsteady loadings, as predicted and measured, are compared for the blade, vane, and shroud as time-averaged, time series, and power series data. The steady CFD prediction was also obtained so as to provide the initial boundary conditions for the unsteady prediction. Therefore, comparisons of the steady CFD predictions and the time- averaged data were also made. The blade included a recessed tip geometry, which was included in the CFD model, and the CFD analysis also investigated different tip/shroud clearances to investigate the influence of the tip cap height on the downstream flow field. The analysis shows that both the steady state and time-accurate pressure predictions compare quite well with the experimental results. The steady and timeaveraged vane predictions are closer to the data than the steady prediction for the blade, but that is to be expected with the unsteady nature of the flow over the blade. The timeaccurate prediction for the blade is in very good agreement with the experimental results. The FINE/Turbo heat transfer predictions (MSU Turbo doesn't do heat-transfer predictions at the present time) are not showing similar trends as the data but this is likely due to the fact that the film cooling was ignored and due to the grid density utilized for these calculations. Since this work is meant to be a true prediction without any model optimization, it is interesting to see where the CFD produces the best results and where it has the most difficulty. It is also important to keep in mind that this work compares an uncooled CFD prediction to data obtained for a fully cooled turbine stage. This is the first time such data has been available and the uncooled CFD predictions will lend insight into the importance of cooling modeling, which has yet to become developed to a point that it is widely used in CFD predictions. Overall, the comparisons made here demonstrate the ability of two different CFD codes to successfully capture the unsteady flow physics on the blade surface and in the blade tip/stationary shroud region.
Download or read book Aerodynamic Design Performance Predictions of a Single Stage Axial flow Turbine written by Angel Santos and published by . This book was released on 1993 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Investigation on an Experimental Single stage Turbine of Conservative Design written by D. J. L. Smith and published by . This book was released on 1967 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts written by and published by . This book was released on 1996 with total page 740 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 1964 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2001 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineers Digest written by and published by . This book was released on 1958 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances in Computational and Experimental Mechanics Vol I written by D. Maity and published by Springer Nature. This book was released on 2022-01-01 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book (Vol. - I) presents select proceedings of the first Online International Conference on Recent Advances in Computational and Experimental Mechanics (ICRACEM 2020) and focuses on theoretical, computational and experimental aspects of solid and fluid mechanics. Various topics covered are computational modelling of extreme events; mechanical modelling of robots; mechanics and design of cellular materials; mechanics of soft materials; mechanics of thin-film and multi-layer structures; meshfree and particle based formulations in continuum mechanics; multi-scale computations in solid mechanics, and materials; multiscale mechanics of brittle and ductile materials; topology and shape optimization techniques; acoustics including aero-acoustics and wave propagation; aerodynamics; dynamics and control in micro/nano engineering; dynamic instability and buckling; flow-induced noise and vibration; inverse problems in mechanics and system identification; measurement and analysis techniques in nonlinear dynamic systems; multibody dynamical systems and applications; nonlinear dynamics and control; stochastic mechanics; structural dynamics and earthquake engineering; structural health monitoring and damage assessment; turbomachinery noise; vibrations of continuous systems, characterization of advanced materials; damage identification and non-destructive evaluation; experimental fire mechanics and damage; experimental fluid mechanics; experimental solid mechanics; measurement in extreme environments; modal testing and dynamics; experimental hydraulics; mechanism of scour under steady and unsteady flows; vibration measurement and control; bio-inspired materials; constitutive modelling of materials; fracture mechanics; mechanics of adhesion, tribology and wear; mechanics of composite materials; mechanics of multifunctional materials; multiscale modelling of materials; phase transformations in materials; plasticity and creep in materials; fluid mechanics, computational fluid dynamics; fluid-structure interaction; free surface, moving boundary and pipe flow; hydrodynamics; multiphase flows; propulsion; internal flow physics; turbulence modelling; wave mechanics; flow through porous media; shock-boundary layer interactions; sediment transport; wave-structure interaction; reduced-order models; turbo-machinery; experimental hydraulics; mechanism of scour under steady and unsteady flows; applications of machine learning and artificial intelligence in mechanics; transport phenomena and soft computing tools in fluid mechanics. The contents of these two volumes (Volumes I and II) discusses various attributes of modern-age mechanics in various disciplines, such as aerospace, civil, mechanical, ocean engineering and naval architecture. The book will be a valuable reference for beginners, researchers, and professionals interested in solid and fluid mechanics and allied fields.
Download or read book COSMIC Software Catalog written by and published by . This book was released on 1987 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy a Continuing Bibliography with Indexes written by and published by . This book was released on 1978 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Renewable Energy Systems written by Ahmad Taher Azar and published by Academic Press. This book was released on 2021-09-09 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renewable Energy Systems: Modelling, Optimization and Control aims to cross-pollinate recent advances in the study of renewable energy control systems by bringing together diverse scientific breakthroughs on the modeling, control and optimization of renewable energy systems by leading researchers. The book brings together the most comprehensive collection of modeling, control theorems and optimization techniques to help solve many scientific issues for researchers in renewable energy and control engineering. Many multidisciplinary applications are discussed, including new fundamentals, modeling, analysis, design, realization and experimental results. The book also covers new circuits and systems to help researchers solve many nonlinear problems. This book fills the gaps between different interdisciplinary applications, ranging from mathematical concepts, modeling, and analysis, up to the realization and experimental work. Covers modeling, control theorems and optimization techniques which will solve many scientific issues for researchers in renewable energy Discusses many multidisciplinary applications with new fundamentals, modeling, analysis, design, realization and experimental results Includes new circuits and systems, helping researchers solve many nonlinear problems
Download or read book The Engineers Digest written by and published by . This book was released on 1958 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 1983 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Engineering International written by and published by . This book was released on 1973 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:
