低雷诺数结冰对风力机翼型气动特性的影响

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2025-07-30 DOI:10.1016/j.coldregions.2025.104618

Zahra Maleksabet , Janusz Kozinski , Ali Tarokh

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引用次数: 0

摘要

风力涡轮机叶片上结冰的问题是一个明显的操作挑战，特别是在加拿大北部地区。冰的形成改变了叶片的气动特性，增加了阻力，从而严重降低了性能。出现的两种主要类型的冰轮廓是釉和霜。在本研究中，在第一部分中，研究了两种实验冰型（釉和霜）对NACA 643-618翼型气动特性的影响，并与清洁翼型进行了比较。模拟采用大涡模拟，雷诺数为137000。在第二节中，除了两个实验冰型外，还研究了上述翼型上参数化冰型的气动特性，并与清洁翼型进行了比较。结果表明，尽管在所有情况下升力系数随迎角增加而增加，但由于前缘结冰导致的早期流动分离，与清洁翼型相比，结冰翼型的升力幅度减小，趋势发生改变。然而，由于不同的冰型引起的气动型的变化，阻力系数表现出波动的行为。与雾凇相比，雾凇会显著增加阻力，导致空气动力学效率的显著降低。此外，在所有冰的情况下，空气动力学性能向前移动5°相比，清洁翼型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Impact of ice accretion on the aerodynamic characteristics of Wind turbine airfoil at low Reynolds numbers

The issue of ice accretion on wind turbine blades presents a noticeable operational challenge, especially in northern regions of Canada. Ice formation alters the aerodynamic properties of the blades, increasing drag which can severely reduce performance. Two primary types of ice profiles that occur are glaze and rime. In this study, in the first section, the impact of two experimental ice profiles (glaze and rime) on the aerodynamic characteristics of the NACA 64₃–618 airfoil are investigated and compared with the clean airfoil. Large Eddy Simulation is employed to do the simulation, at the Reynolds number of 137,000. In the second section, the aerodynamic characteristics of a parametric ice profile on the mentioned airfoil are studied and compared with the clean airfoil in addition to two experimental ice profiles. The results indicate that although the lift coefficient increases with angle of attack in all cases, the iced airfoils exhibit reduced lift magnitude and altered trends compared to the clean airfoil due to early flow separation that happens because of the ice accretion on the leading edge. However, the drag coefficient exhibits fluctuating behavior due to the varying aerodynamic profiles caused by the different ice profiles. Glaze significantly increases drag, leading to a more pronounced reduction in aerodynamic efficiency compared to rime. Furthermore, in all iced cases, the aerodynamic performance moves forward by 5

^{°}

compared to clean airfoil.

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来源期刊

Cold Regions Science and Technology 工程技术-地球科学综合

CiteScore

7.40

自引率

12.20%

发文量

209

审稿时长

4.9 months

期刊介绍： Cold Regions Science and Technology is an international journal dealing with the science and technical problems of cold environments in both the polar regions and more temperate locations. It includes fundamental aspects of cryospheric sciences which have applications for cold regions problems as well as engineering topics which relate to the cryosphere. Emphasis is given to applied science with broad coverage of the physical and mechanical aspects of ice (including glaciers and sea ice), snow and snow avalanches, ice-water systems, ice-bonded soils and permafrost. Relevant aspects of Earth science, materials science, offshore and river ice engineering are also of primary interest. These include icing of ships and structures as well as trafficability in cold environments. Technological advances for cold regions in research, development, and engineering practice are relevant to the journal. Theoretical papers must include a detailed discussion of the potential application of the theory to address cold regions problems. The journal serves a wide range of specialists, providing a medium for interdisciplinary communication and a convenient source of reference.