Results 221 to 230 of about 55,419 (236)
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Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2018
The effects of axially non-uniform clearances on the tip leakage flow and aerodynamic performance in a linear turbine cascade with a cavity squealer tip were investigated in this study with the objective of improving the flow loss and tip flow field structure.
Shaowen Chen +4 more
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The effects of axially non-uniform clearances on the tip leakage flow and aerodynamic performance in a linear turbine cascade with a cavity squealer tip were investigated in this study with the objective of improving the flow loss and tip flow field structure.
Shaowen Chen +4 more
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A Study on the Effects of Blade Profile and Non-Uniform Tip Clearance of the Wells Turbine
Volume 6: Nick Newman Symposium on Marine Hydrodynamics; Yoshida and Maeda Special Symposium on Ocean Space Utilization; Special Symposium on Offshore Renewable Energy, 2008Several of wave energy devices being studied under many wave energy programs in the United Kingdom, Japan, Portugal, India and other countries make use of the principle of an oscillating water column (OWC). In such wave energy devices, a water column which oscillates due to wave motion is used to drive an oscillating air column which is converted into ...
Manabu Takao +3 more
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The transonic compressor with non-uniform tip clearance: Effects on aerodynamics and aeroelasticity
2019This study experimentally investigates the aerodynamic and aeroelastic behaviour of a transonic compressor with non-uniform tip clearance. Current design trends for aero engines require more efficient compressors with high pressure ratio and reduced weight.
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47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition, 2009
This paper presents an experimental investigation of effects of axially non-uniform tip clearances on aerodynamic performance of a compressor cascade. The tests were performed in a low-speed large-scale cascade with different axially non-uniform tip clearances while the flow filed at an exit of the cascade was measured at three incidence angles of -5o,
Hongwei Ma, Zhaofeng Wang, Jun Zhang
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This paper presents an experimental investigation of effects of axially non-uniform tip clearances on aerodynamic performance of a compressor cascade. The tests were performed in a low-speed large-scale cascade with different axially non-uniform tip clearances while the flow filed at an exit of the cascade was measured at three incidence angles of -5o,
Hongwei Ma, Zhaofeng Wang, Jun Zhang
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Volume 1: Turbomachinery, 1994
An axially non-uniform type of rotor tip clearance was conceived and tried on a single stage compressor. This concept is based on the advantages of a smaller tip clearance in the front portion of the blade and a larger clearance in the rear portion which allows a higher tip leakage flow to interact with the passage secondary flow, casing wall boundary ...
K. Mohan, S. A. Guruprasad
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An axially non-uniform type of rotor tip clearance was conceived and tried on a single stage compressor. This concept is based on the advantages of a smaller tip clearance in the front portion of the blade and a larger clearance in the rear portion which allows a higher tip leakage flow to interact with the passage secondary flow, casing wall boundary ...
K. Mohan, S. A. Guruprasad
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Effect of circumferential non-uniform tip clearance on the flow in a transonic compressor
Physics of FluidsIn order to clarify the influence of circumferential non-uniform tip clearance (CNTC) on the flow, this paper studies the tip clearance structures with different minimum clearance sizes and distribution forms while ensuring the consistency of the average tip clearance size.
Jingquan Xu +4 more
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Journal of Thermal Science, 2010
This paper presents an experimental investigation of effects of one kind of tangentially non-uniform tip clearance on the flow field at an exit of a compressor cascade passage. The tests were performed in a low-speed large-scale cascade with the uniform tip clearance and the non-uniform clearance.
Hongwei Ma, Jinghui Zhang, Jun Zhang
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This paper presents an experimental investigation of effects of one kind of tangentially non-uniform tip clearance on the flow field at an exit of a compressor cascade passage. The tests were performed in a low-speed large-scale cascade with the uniform tip clearance and the non-uniform clearance.
Hongwei Ma, Jinghui Zhang, Jun Zhang
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Physics of Fluids
Pre-stall disturbances and rotating instability (RI) are two typical phenomena observed in axial compressors prior to stall. In this study, experimental measurements and numerical simulations were employed to investigate the relationship between pre-stall disturbances and RI and their physical mechanisms in an axial compressor rotor with a non-uniform ...
Fan Yang +4 more
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Pre-stall disturbances and rotating instability (RI) are two typical phenomena observed in axial compressors prior to stall. In this study, experimental measurements and numerical simulations were employed to investigate the relationship between pre-stall disturbances and RI and their physical mechanisms in an axial compressor rotor with a non-uniform ...
Fan Yang +4 more
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Journal of Fluid Machinery, 2008
Flow structures in an axial compressor with a non-uniform tip clearance were predicted by solving a simple prediction method. For more reliable prediction at the off-design condition, off-design flow characteristics such as loss and flow blockage were incorporated in the model.
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Flow structures in an axial compressor with a non-uniform tip clearance were predicted by solving a simple prediction method. For more reliable prediction at the off-design condition, off-design flow characteristics such as loss and flow blockage were incorporated in the model.
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Physics of Fluids
The suppression of the pressure fluctuations in the tip clearance of the pump-jet propulsor is of great significance in improving its noise radiation level. This study considers adding rotor blade crown structure to propose a new type of pump-jet propulsor.
Lin Xue +6 more
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The suppression of the pressure fluctuations in the tip clearance of the pump-jet propulsor is of great significance in improving its noise radiation level. This study considers adding rotor blade crown structure to propose a new type of pump-jet propulsor.
Lin Xue +6 more
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