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12 articles for “Gas turbine blade”
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Analytical Comparison of a Gas Turbine Blade Cooling Using Wet and Dry Air
Abstract: Air cooling is widely used technique to shield the turbine aerofoils against hot flue gases. The cooling of a gas turbine blade using wet air and dry air as a coolant is analytically investigated. The investigation is carried out considering effect of rotation for inward and outward flow of coolant. Wet air cooling performance is compared with dry air cooling. It has been observed that wet air provides better cooling …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 3, 2016 · pp. 1–12 Read article
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Probabilistic and Diagnostic methods to determine the multiple failure mechanisms of HPT 1st stage Marine gas turbine blade.
Abstract: AbstractThe failure analysis of high pressure turbine (HPT) blade belonging to 30 MW gas turbine used in marine applications is presented. Before failure, the turbine blade under evaluation was operated for about 10000 hours while its service life was expected to be around 15000 hours. The gas turbine blade was made of Nickel based super alloy and was manufactured by investment casting method. An attempt has been made to analyze …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 2, 2020 · pp. 21–31 Read article
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Effect of Blade-Casing Rub Event on Blade, Casing and Turbine Shaft in Gas Turbine Engine
Abstract: Numerical results obtained for an Inconel-718 compressor blade rubbing a stationary casing of gas turbine at engine speed are described in this paper. Higher performances of gas turbine depend on minimum clearance between rotating blade and stationary casing. But tighter clearances result in rub event at blade tips, transferring load on different parts of gas turbine in radial, axial and tangential directions. The axial, radial and circumferential loads are noted …
Published in Trends in Mechanical Engineering & Technology · Vol. 6, Issue 1, 2016 · pp. 43–54 Read article
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Evaluation of J-Integral and Fatigue Crack Growth Rate of Semi-elliptical Crack in Compressor Blade
Abstract: Gas turbine compressor blades are subjected to centrifugal, gas bending and vibratory loads. This repeated loading and unloading can reduce the life of compressor blades. This research aims at the estimation of fatigue crack growth rate of various three-dimensional cracks in a compressor blade considering the J-integral calculations for a semi-elliptical crack, subjected to centrifugal loading. Static stress analysis was carried out to ascertain the critical region or crack zone …
Published in Journal of Mechatronics and Automation · Vol. 1, Issue 2, 2014 · pp. 39–46 Read article
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Evaluation of J-Integral and Fatigue Crack Growth Rate of Semi-elliptical Crack in Compressor Blade
Abstract: Gas turbine compressor blades are subjected to centrifugal, gas bending and vibratory loads. This repeated loading and unloading can reduce the life of compressor blades. This research aims at the estimation of fatigue crack growth rate of various three-dimensional cracks in a compressor blade considering the J-integral calculations for a semi-elliptical crack, subjected to centrifugal loading. Static stress analysis was carried out to ascertain the critical region or crack zone …
Published in Trends in Mechanical Engineering & Technology · Vol. 4, Issue 2, 2014 · pp. 39–46 Read article
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Experimental Investigation on Heat Transfer Characteristics of Thermal Barrier Coating on Aero Engine Components
Abstract: The gas turbine blades play a crucial role in harnessing energy from the high-temperature and highpressure gas generated by the combustor. To withstand this challenging environment, turbine blades often employ super-alloys and incorporate new manufacturing technologies such as Direct Solidification (DS) and Single Crystal (SC). Additionally, the development of advanced ceramic Thermal Barrier Coating (TBC) is imperative to achieve higher operating temperatures (>1200°C). Therefore, the primary focus of this study …
Published in Journal of Polymer & Composites · Vol. 11, Issue 13, 2023 · pp. 50–58 Read article
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Review Paper on Experimental Investigation of the Impingement Cooling for Single Stationary Flat Plate in Case of Laminar Flow
Abstract: In this paper, impingement cooling on single stationary flat stainless steel plate in which we illustrate the effects of cooling rate, heat transfer rate, and heat transfer coefficient of plate when jet hole diameter changes from 5 to 8 mm; it means that there are changes in Re and Nu number and corresponding changes in air velocity. Select the jet to target plate distance as 9D, where D=diameter of the …
Published in Recent Trends in Fluid Mechanics · Vol. 3, Issue 2, 2016 · pp. 36–43 Read article
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The Impingement Cooling for Single Stationary Flat Plate in Case of Laminar Flow
Abstract: In this paper, impingement cooling on single stationary flat stainless steel plate is performed to illustrate the effects of cooling rate, heat transfer rate, heat transfer coefficient of the plate when the jet hole diameter is changed from 5 to 8 mm. It means that changes in Reynolds number (Re) and Nusselt number (Nu) show corresponding changes in air velocity. Select the jet to target plate distance nine times diameter …
Published in Recent Trends in Fluid Mechanics · Vol. 3, Issue 2, 2016 · pp. 44–52 Read article
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A Bladeless Funnel Based Wind Turbine for Highway Wind Power Generation
Abstract: Abstract: In today’s date, whole world is a large consumer of fossil fuel such as coal, crude oil etc. The rapid increase in use of Non-renewable energies such as fossil fuel, oil, natural gas has created problems of demand & supply. A considerable amount of wind energy is produced due to the pressure created by the moving vehicles on the highways. This wind energy can be utilized for the generation …
Published in Recent Trends in Parallel Computing · Vol. 6, Issue 3, 2019 · pp. 12–16 Read article
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Influence of Internal and External Dampings on Shaft Whirl Speeds
Abstract: A mathematical model is developed for the estimation of rotor forward and backward whirl speeds by considering the stationary and rotational dampings. Stationary damping includes external viscous damping in the bearings and rotational damping includes internal viscous and hysteretic damping in the shaft material. The rotors in gas turbines and steam turbines commonly used in military and commercial rotating machines operate at high speeds. These rotors are provided with a …
Published in Trends in Machine design · Vol. 3, Issue 3, 2016 · pp. 1–11 Read article
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Energy harnessing solution using a vertical axis wind turbine installed on the automotive rooftop.
Abstract: The transportation sector plays a major role in greenhouse gas emissions, prompting worldwide initiatives to mitigate its environmental effects. While the shift from internal combustion engines to electric vehicles is growing, it often merely shifts emissions rather than eliminating them, as fossil fuels continue to dominate energy production. A comprehensive solution requires universal access to renewable energy sources like wind, solar, and hydro power, which is currently impractical due to …
Published in Journal of Automobile Engineering and Applications · Vol. 11, Issue 3, 2024 · pp. 1–21 Read article
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Optimizing Power Generation from Building Ventilation Systems: A Study on Exhaust Fan Efficiency
Abstract: Due to population growth, the world's energy consumption has increased dramatically in both wealthy and developing nations in recent years, and by 2042, it is predicted to have doubled or more. Since a few years ago, the use of innovative sustainable power sources to meet energy demands has been gradually increasing. We've chipped away at a different idea because of this. As an alternative energy source, renewable energy (RE) resources …
Published in International Journal of Electrical Power and Machine Systems · Vol. 1, Issue 2, 2023 · pp. 22–27 Read article