Abstract
Ribbed-swirl cooling performs excellently in enhancing heat transfer, but previous studies were almost conducted in simple circular tubes under static conditions. The influence of actual mainstream flow, heat conduction of blade as well as the rotation effect was ignored. To explore its application potential in a real environment, the thermal performance of swirling cooling after adding annular ribs to its target surface in a real turbine blade was analyzed, and the impacts of centrifugal force along with Coriolis force were also included. From the results, the ribs affected the distribution of nozzle mass flow rate. For nozzles near the blade root, the mass flow rates in ribbed-swirl cooling were smaller than those in smooth-swirl chamber, while near blade tip, those were higher. Besides, the influence of Coriolis force from SS (suction side) to PS (pressure side) on the development of cross-flow and swirl in smooth and ribbed chamber exerted a significant difference. For ribbed-swirl cooling, cross-flow passing through ribs induced flow separation, which was conducted to cross-flow suppression. The combined action of the above two aspects led to an obvious heat transfer advantage of ribbed-swirl cooling. In comparison to smooth-swirl chamber, its blade surface temperature was further reduced to more than 25 K.
Acknowledgments
The authors would like to acknowledge the financial support from Ministry of Industry and Information Technology Key Laboratory of Thermal Management and Energy Utilization of Aviation Vehicles and Jiangsu Province Provincial department of science and technology (No. BK20241413).
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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. Kun Xiao: Conceptualization, Data Curation, Formal Analysis, Investigation, Writing – Original Draft, Xiandi Zhao: Methodology, Juan He: Investigation, Writing – Review & Editing, Zhaokai Ma: Funding Acquisition, Writing – Review & Editing, Zhenping Feng: Project Administration.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The author states no conflict of interest.
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Research funding: Ministry of Industry and Information Technology Key Laboratory of Thermal Management and Energy Utilization of Aviation Vehicles(No.CEPE2024005), Jiangsu Province Provincial department of science and technology (No. BK20241413).
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Data availability: All data generated or analyzed during this study are included in this published article.
Nomenclature
Symbols
- Fi
-
Body force, N
- f
-
Friction factor
- H
-
Height of the jet nozzles, mm
- h
-
Heat transfer coefficient, W/(m2·K)
- h r
-
Height of ribs, mm
- L
-
Length of the swirl chamber, mm
- Nu
-
Nusselt number
- N 0
-
Total internal energy, J
- P
-
Pressure, kPa
- PS
-
Pressure surface
- q
-
Heat flux, W/m2
- Re
-
Reynolds number
- S
-
Area, m2
- SS
-
Suction surface
- S ij
-
Strain rate tensor
- T
-
Temperature, K
- t
-
Time, s
- U
-
Velocity, m/s
- W
-
Width of the jet nozzles, mm
Greek symbols
- ρ
-
Density of gas, kg/m3
- μ
-
Dynamic viscosity, m2/s
- λ
-
Thermal conductively, W/(m·K)
- σ ij
-
Stress tensor
Subscripts
- a
-
Area-averaged
- cir
-
Circumferentially-averaged
- In
-
Inlet
- w
-
Wall
- 0
-
Baseline
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© 2024 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Deep residual ensemble model for predicting remaining useful life of turbo fan engines
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- Interaction effects between the rotor wake and hub leakage flow in a multi-stage cantilevered compressor
- Determination of the modern marine single shaft gas turbine rotor blades fatigue strength parameters
- Role of different cavity flame holders on the performance characteristics of supersonic combustor
- Thermal performance of teardrop pin fins and zig zag ribs in a wedge channel
- Investigation of varying tip clearance gap and operating conditions on the fulfilment of low-speed axial flow fan
- Upgraded one-dimensional code for the design of a micro gas turbine mixed flow compressor stage with various crossover diffuser configurations
- Performance evaluation of a scramjet engine utilizing varied cavity aft wall divergence with parallel injection in a reacting flow field
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- Numerical analysis of brush seal hysteresis based on orthogonal test method
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- Flow pattern formation due to the interdependency of multi-component interactions and their impact on the performance of turbine and exhaust duct of gas turbine
- Flight trajectory optimization study of a variable-cycle turbine-based combined cycle engine hypersonic vehicle based on airframe/engine integration
- Constant temperature line identification on prototype gas turbine combustor with multi-colour change coating
- Sensitivity analysis of aero-engine performance optimization control system and its hardware test verification
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Articles in the same Issue
- Frontmatter
- Deep residual ensemble model for predicting remaining useful life of turbo fan engines
- Review of gliding arc plasma assisted ignition and combustion for gas turbine application
- Interaction effects between the rotor wake and hub leakage flow in a multi-stage cantilevered compressor
- Determination of the modern marine single shaft gas turbine rotor blades fatigue strength parameters
- Role of different cavity flame holders on the performance characteristics of supersonic combustor
- Thermal performance of teardrop pin fins and zig zag ribs in a wedge channel
- Investigation of varying tip clearance gap and operating conditions on the fulfilment of low-speed axial flow fan
- Upgraded one-dimensional code for the design of a micro gas turbine mixed flow compressor stage with various crossover diffuser configurations
- Performance evaluation of a scramjet engine utilizing varied cavity aft wall divergence with parallel injection in a reacting flow field
- Speed controller design for turboshaft engine using a high-fidelity AeroThermal model
- Multi-nozzle thrust matching control of STOVL engine
- Numerical analysis of brush seal hysteresis based on orthogonal test method
- Conjugated heat transfer characteristics of ribbed-swirl cooling in turbine blade under rotation condition
- Flow pattern formation due to the interdependency of multi-component interactions and their impact on the performance of turbine and exhaust duct of gas turbine
- Flight trajectory optimization study of a variable-cycle turbine-based combined cycle engine hypersonic vehicle based on airframe/engine integration
- Constant temperature line identification on prototype gas turbine combustor with multi-colour change coating
- Sensitivity analysis of aero-engine performance optimization control system and its hardware test verification
- Compensator based improved model predictive control for Aero-engine
- Ignition experimental study based on rotating gliding arc