Investigation on aerothermal characteristics of turbine blade tip ...
2024年6月1日 · The research focus is on a high-pressure turbine with a groove structure inside the rotor blade that gradually narrows along the depth direction. The blade height is denoted as X, and the original groove depth is H (H = 0.39×). The study investigates the impact of different sizes of grooved tips on leakage flow for five clearance height cases ...
Casing grooves to improve aerodynamic performance of a HP turbine blade
2018年5月1日 · Highly three-dimensional and complex flow structure in the tip gap between a blade tip and the casing leads to significant inefficiency in the aerodynamic performance of a turbine. The interaction between the tip leakage vortex and the main passage flow is a substantial source of aerodynamic loss.
Effects of the circumferential casing groove configuration on ...
2024年7月1日 · Overall, a circumferential casing groove configuration is proved to be effective for improving the turbine blade tip aerothermal performance, without any serious deterioration of thermal load on the blade.
particular, turbine blade grooves of power systems and aircraft engines have complicated shapes and require high levels of cutting accuracy and surface finish quality due to their harsh use environment.
Structural Optimization of Fir-Tree Root and Groove for Turbine Blade …
2019年11月5日 · Due to its finite size and the large centrifugal load, the fir-tree root is highly stressed, which leads to the possible early failure of the gas turbine and steam turbine. To find an optimized fir-tree root is an important issue for the design of the turbine structures.
Structural Optimization of Fir-Tree Root and Groove for Turbine Blade ...
2016年9月20日 · The wide use of fir-tree root and groove in turbine structures prompts the expectation to find optimum configurations, which ensure that stresses are in the safe limits to avoid mechanical failure. To perform the optimization, the reasonable characterization of root configuration is required.
Casing grooves to improve aerodynamic performance of a HP turbine blade
2018年5月1日 · In an axial-flow turbine of a jet engine used for aircraft propulsion, the passage vortex (PV) and tip leakage vortex (TLV) generated inside the blade passage deteriorate the aerodynamic performance.… Focusing on a twin-stage axial fan, this paper investigates the effect of blade tip pattern on blade load and vibration characteristics.
Structural Optimization of Fir-Tree Root and Groove for Turbine Blade ...
2019年6月17日 · To find an optimized fir-tree root is an important issue for the design of the turbine structures. In this paper, a superellipse-based design optimization approach is proposed for the fir-tree root. Rather than the straight line and arc used in literature, the combination of the superellipse curve and line are employed to…
Casing grooves to improve aerodynamic performance of a HP turbine blade
Highly three-dimensional and complex flow structure in the tip gap between a blade tip and the casing leads to significant inefficiency in the aerodynamic performance of a turbine. The interaction between the tip leakage vortex and the main passage flow is a substantial source of aerodynamic loss.
Investigation on aerothermal characteristics of turbine blade tip ...
2024年6月1日 · Consequently, thorough investigation into grooved blade tip represents a crucial avenue for improving turbine blade tip flow and heat transfer characteristics. The groove depth is a critical geometric parameter of the grooved blade tip structure, which significantly affects the leakage flow of the clearance.
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