不稳定的洞穴对NACA 4412水翼机水力动力学性能的影响 带有新型三角槽的水翼机
1School of Mechanical Engineering, Vellore Institute of Technology, Chennai, Tamil Nadu, 600127, India.
Heliyon
|February 13, 2025
概括
一个经过修改的NACA 4412水翼机,具有三角槽,在较低的洞穴数下显示出更好的洞穴控制. 这种修改有助于避免在更高的攻击角度停滞,提高水力动力性能.
科学领域:
- 流体动力学 流体动力学
- 水力动力学是指水力动力学.
- 化物理 化物理
背景情况:
- NACA 4412 水翼板在海洋应用中广泛使用.
- 洞化可以显著降低翼的性能.
- 修改翼几何学是一种减轻化效应的策略.
研究的目的:
- 根据基本设计,评估修改后的NACA 4412翼的水力动力性能.
- 为了研究三角槽对化控制的影响.
- 分析各种化数和攻击角度的性能.
主要方法:
- 进行了计算流体动力学 (CFD) 模拟.
- 采用了SST k-ω流模型,同质混合物多相模型和Schnerr-Sauer化模型.
- 水力动力系数 (起重,阻力,起重与阻力比率) 用150万的雷诺德数计算出来.
主要成果:
- 修改后的翼在较低的化数 (0.8-2.5) 时显示出优异的化控制.
- 在较高的化数量下,基底翼提供了稍微更好的起重-拖拉比率.
- 修改后的翼翼机在4°,8°和16°的攻击角度表现出更好的性能,在16°防止机.
结论:
- 三角槽修改有效地提高了NACA 4412潜翼机的洞穴管理.
- 与基础翼相比,修改后的翼表现出更好的机特性.
- 设计修改可以在特定操作条件下优化翼性能.
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