Numerical study of effect of the casing slot on the tip leakage vortex and vortex cavitation of a fuel pump
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Ting Zhang
,
Huacong Li
Abstract
The purpose of this paper is to suppress the tip leakage vortex and cavitation of fuel pump by using the casing slot. The flow fields of the blades with different casing slots were studied by numerical simulation under the conditions of no cavitation and cavitation respectively. The results show that the loss with leakage vortex cavitation increases by 37 % compared with the condition without cavitation. Under cavitation conditions, the optimal scheme is c6 scheme, and the loss is reduced by 9.3 %. The tip leakage vortex and vortex cavitation can be effectively reduced by casing slot. Under the condition of no cavitation, the tip leakage flow loss can be effectively reduced by the casing slot in a wide range of axial positions. After the casing slot is applied, the shape of the blade tip leakage vortex is significantly changed, the size of the leakage vortex is significantly reduced, and the loss is reduced. Under cavitation conditions, the casing slot can also effectively improve the tip flow field and inhibit leakage vortex cavitation. In a wide range of axial positions, the casing slot can effectively inhibit leakage vortex cavitation.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The authors state no conflict of interest.
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Research funding: This work was sponsored by National Natural Science Foundation of China (No. 51806174).
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Data availability: The raw data can be obtained on request from the corresponding author.
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Articles in the same Issue
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- Exploration of shock-induced flow dynamics and turbulence-driven combustion optimization in advanced cavity configurations of hydrogen fueled scramjet combustors
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Articles in the same Issue
- Frontmatter
- Simulation and analysis of the over-expanded flow field in asymmetric nozzles with lateral expansion
- Design optimization of a fluidic thrust vectoring system based on coanda effect using meta-models
- Research on vibration damping of integral squeeze film damper based on fan rotor tester of turbofan
- Influence of conical shaft stiffness on the dynamic characteristics of flexible rotor
- A novel design methodology for preventing dislocation in the Zig-zag shroud
- Numerical study of effect of the casing slot on the tip leakage vortex and vortex cavitation of a fuel pump
- Multi-parameter study on array-jets impingement with crossflow temperature effect
- Exploration of shock-induced flow dynamics and turbulence-driven combustion optimization in advanced cavity configurations of hydrogen fueled scramjet combustors
- A part-load performance analysis method for gas turbines based on the stage by stages model of the power turbine
- Effect of lip-thickness on rectangular nozzle co-flowing subsonic jet
- Numerical analysis of pollutant formation and exhaust emission in a short annular combustor under part load operation
- Analysis of leakage characteristics and structural optimization of two-stage floating ring seal
- Hypersonic boundary layer flow at an axisymmetric stagnation point on a blunt body
- Numerical simulations of a turbulent lifted hydrogen flame in vitiated coflow with flamelet generated manifold approach
- Optimization of labyrinth seal leakage with independently varied tooth parameters using efficient global optimization
- Investigations of modified cooling hole injection angle configurations for improved trench film cooling performance
- Influence of non-axisymmetric endwall profiling under incoming vortex on the corner separation of a diffusion cascade
- Impact of annular ribs in sudden expansion flow conditions to control base pressure
- Effect of preheated swirling multi-annular jets on mixing and flow characteristics in various expanded confinements
