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Control of Corner Separation in Compressor Cascade Using Biomimetic Fish Scales Structure
1Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan.
Biomimetics (Basel, Switzerland)
|December 27, 2024
Summary
A novel fish scale structure reduces compressor inefficiency by suppressing corner separation and lowering total pressure loss. This biomimetic design minimizes low-energy fluid, enhancing overall compressor performance.
Area of Science:
- Fluid Dynamics
- Aerodynamics
- Biomimetics
Background:
- Corner separation and associated flow losses significantly reduce compressor efficiency.
- Traditional designs struggle to mitigate these inefficiencies effectively.
Purpose of the Study:
- To investigate the efficacy of a biomimetic fish scale structure in reducing total pressure loss and suppressing corner separation in a compressor cascade.
- To analyze the impact of this structure on secondary flow patterns.
Main Methods:
- Computational Fluid Dynamics (CFD) simulations were employed to design and integrate the fish scale structure.
- Analysis of secondary flow structures using 2D projected streamlines, axial velocity density (AVD), and vortex visualization.
Main Results:
- The fish scale structure reduced low-energy fluid volume by 18.36%.
- Total pressure loss at the outlet decreased by 3.5%.
- Axial velocity density (AVD) iso-surfaces effectively identified low-energy fluid regions correlating with pressure loss.
Conclusions:
- Biomimetic fish scale structures show significant potential for improving compressor performance.
- Mitigating corner separation and reducing flow losses are key benefits.
- This approach offers a promising avenue for next-generation compressor designs.
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