マイクロ構造表面を有するバイオニックファンブレードの空力性能に関する研究
Meihong Gao1, Xiaomin Liu1,2, Meihui Zhu1
1Department of Mechanical and Electronic Engineering, Heze University, Heze 274015, China.
Biomimetics (Basel, Switzerland)
|January 27, 2026
まとめ
軸流ファンブレード上のバイオニックマイクログルーブは、抗力を低減し、効率を向上させます。本研究は、抗力低減の法則を明らかにし、マイクロ構造を製造することで、工学用途の空力性能を向上させます。
科学分野:
- 流体力学
- 空気力学
- バイオニクス
背景:
- インペラ機械ブレードの摩擦抵抗は、効率に大きく影響します。
- サメ肌にインスパイアされたマイクロ構造は、抗力低減のための有望なアプローチを提供します。
- 3D曲面へのマイクロ構造の製造は、工学的課題を提示します。
研究 の 目的:
- 小型軸流ファンのバイオニックマイクログルーブ表面の抗力低減法則を調査すること。
- ファンブレード表面のバイオニックマイクロ構造の最適な寸法を決定すること。
- 生体模倣表面工学を通じて、空力性能と効率を向上させること。
主な方法:
- 実験計画法(DOE)と高精度数値シミュレーションを組み合わせました。
- 定常状態(k-ωモデル、simpleFoam)および非定常(Large Eddy Simulation、pimpleFoam、WALE)シミュレーションを利用しました。
- 溝付き平板データに基づいたスプレーコーティングプロセスを使用して、マイクロ構造化された表面を製造しました。
主要な成果:
- 無次元高さh+および幅s+の範囲8.50-29.75のマイクログルーブは、効果的な抗力低減を達成しました。
- バイオニックファンブレードは、軸動力消費量が大幅に削減されました。
- 静圧効率は、マイクロディンプルで2.33%、マイクログルーブで3.46%増加しました。
結論:
- バイオニックマイクロ構造表面は、軸流ファンの抗力を効果的に低減し、空力性能を向上させます。
- 提案されたスプレーコーティング製造方法は、バイオニック抗力低減技術の工学的応用を容易にします。
- この研究は、バイオミミクリーを通じてターボ機械の効率を向上させるための道筋を提供します。
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