Impingement Cooled Turbine Blade
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Impingement Cooled Turbine Blade
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Author : H. H. Ernst
language : en
Publisher:
Release Date : 1973
Impingement Cooled Turbine Blade written by H. H. Ernst and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with categories.
The patent application relates to an impingement cooled turbine blade to be used with a hollow turbine shaft, using a female dovetail and having an easily removable insert for guiding and directing the cooling fluid through the hollow blade.
An Investigation Of Impingement Cooling Applied To Turbine Blade Cooling Passages
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Author : Andrew Crawford Chambers
language : en
Publisher:
Release Date : 2003
An Investigation Of Impingement Cooling Applied To Turbine Blade Cooling Passages written by Andrew Crawford Chambers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Turbines categories.
Channel Flow Modeling Of Impingement Cooling Of A Rotating Turbine Blade
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Author : JaHye Jenny Koo
language : en
Publisher:
Release Date : 1984
Channel Flow Modeling Of Impingement Cooling Of A Rotating Turbine Blade written by JaHye Jenny Koo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
Computer Program For Generating Input For Analysis Of Impingement Cooled Axial Flow Turbine Blade
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Author : David Rosenbaum
language : en
Publisher:
Release Date : 1980
Computer Program For Generating Input For Analysis Of Impingement Cooled Axial Flow Turbine Blade written by David Rosenbaum and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
Characterization Of An Inline Row Impingement Channel For Turbine Blade Cooling Applications
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Author : Mark A. Ricklick
language : en
Publisher:
Release Date : 2009
Characterization Of An Inline Row Impingement Channel For Turbine Blade Cooling Applications written by Mark A. Ricklick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Heat categories.
Gas turbines have become an intricate part of today's society. Besides powering practically all 200,000+ passenger aircraft in use today, they are also a predominate form of power generation when coupled with a generator. The fact that they are highly efficient, and capable of large power to weight ratios, makes gas turbines an ideal solution for many power requirement issues faced today. Designers have even been able to develop small, 'micro' turbines capable of producing efficient portable power. Part of the turbine's success is the fact that their efficiency levels have continuously risen since their introduction in the early 1800's. Along with improvements in our understanding and designs of the aerodynamic components of the turbine, as well as improvements in the areas of material design and combustion control, advances in component cooling techniques have predominantly contributed to this success. This is the result of a simple thermodynamic concept; as the turbine inlet temperature is increased, the overall efficiency of the machine increases as well. Designers have exploited this fact to the extent that modern gas turbines produce rotor inlet temperatures beyond the melting point of the sophisticated materials used within them. This has only been possible through the use of sophisticated cooling techniques, particularly in the 1st stage vanes and blades. Some of the cooling techniques employed today have been internal cooling channels enhanced with various features, film and showerhead cooling, as well as internal impingement cooling scenarios. Impingement cooling has proven to be one of the most capable heat removal processes, and the combination of this cooling feature with that of channel flow, as is done in impingement channel cooling, creates a scenario that has understandably received a great deal of attention in recent years. This study has investigated several of the unpublished characteristics of these impingement channels, including the channel height effects on the performance of the channel side walls, effects of bulk temperature increase on heat transfer coefficients, circumferential heat variation effects, and effects on the uniformity of the heat transfer distribution. The main objectives of this dissertation are to explore the various previously unstudied characteristics of impingement channels, in order to sufficiently predict their performance in a wide range of applications. The potential exists, therefore, for a designer to develop a blade with cooling characteristics specifically tailored to the expected component thermal loads. Temperature sensitive paint (TSP) is one of several non-intrusive optical temperature measurements techniques that have gained a significant amount of popularity in the last decade. By employing the use of TSP, we have the ability to provide very accurate (less than 1 degree Celsius uncertainty), high resolution full-field temperature measurements. This has allowed us to investigate the local heat transfer characteristics of the various channel surfaces under a variety of steady state testing conditions. The comparison of thermal performance and uniformity for each impingement channel configuration then highlights the benefits and disadvantages of various configurations. Through these investigations, it has been shown that the channel side walls provide heat transfer coefficients comparable to those found on the target surface, especially at small impingement heights. Although the side walls suffer from highly non-uniform performance near the start of the channel, the profiles become very uniform as the cross flow develops and becomes a dominating contributor to the heat transfer coefficient. Increases in channel height result in increased non-uniformity in the streamwise direction and decreased heat transfer levels. Bulk temperature increases have also been shown to be an important consideration when investigating surfaces dominated by cross flow heat transfer effects, as enhancements up to 80% in some areas may be computed. Considerations of these bulk temperature changes also allow the determination of the point at which the flow transitions from an impingement dominated regime to one that is dominated by cross flow effects. Finally, circumferential heat variations have proven to have negligible effects on the calculated heat transfer coefficient, with the observed differences in heat transfer coefficient being contributed to the unaccounted variations in channel bulk temperature.
Computer Program For Generating Input For Analysis Of Impingement Cooled Axial Flow Turbine Blade
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Author : David Rosenbaum
language : en
Publisher:
Release Date : 1980
Computer Program For Generating Input For Analysis Of Impingement Cooled Axial Flow Turbine Blade written by David Rosenbaum and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Heat categories.
A computer program called TACTGRID has been developed that generates the geometrical input for the TACT1 program, a program that calculates transient and steady-state temperatures, pressures, and cooling flows in an impingement-cooled turbine blade. Using spline curves, the TACTGRID program constructs the blade internal geometry from the previously designed external blade surface and newly selected wall and channel thicknesses. TACTGRID generates the TACT1 calculational grid, calculates arc lengths between grid points required by TACT1 as input, and prepares the namelist input data set used by TACT1 for the blade geometry. In addition, TACTGRID produces a scaled computer plot of each blade slice, detailing the grid and calculational stations, and thus eliminates the need for any intermediate drafting. (Author).
The Effects Of Surface Roughness Of Impingement Cooling Of A Gas Turbine Blade
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Author : Eric R. McFarland
language : en
Publisher:
Release Date : 1974
The Effects Of Surface Roughness Of Impingement Cooling Of A Gas Turbine Blade written by Eric R. McFarland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with categories.
Engine Investigation Of An Impingement Cooled Turbine Rotor Blade
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Author : James W. Gaunter
language : en
Publisher:
Release Date : 1973
Engine Investigation Of An Impingement Cooled Turbine Rotor Blade written by James W. Gaunter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with categories.
A Computer Program For The Transient Thermal Analysis Of An Impingement Cooled Turbine Blade
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Author : Raymond E. Gaugler
language : en
Publisher:
Release Date : 1977
A Computer Program For The Transient Thermal Analysis Of An Impingement Cooled Turbine Blade written by Raymond E. Gaugler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with categories.
Stagger Angle Effects On Impingement Cooling Of A Rotating Turbine Blade
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Author : Uriel Z. Preiser
language : en
Publisher:
Release Date : 1983
Stagger Angle Effects On Impingement Cooling Of A Rotating Turbine Blade written by Uriel Z. Preiser and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.