Numerical Simulation of Icing on Nrel 5-MW Reference Offshore Wind Turbine Blades Under Different Icing Conditions

Cao, Huiqing; Bai, Xu; Ma, Xiandong; Qun, Yin; Yang, Xiangyu

doi:10.1007/s13344-022-0068-x

Cited by 11 publications

(12 citation statements)

References 26 publications

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“…An increase in Median Volume Diameter (MVD) and Liquid Water Content (LWC) resulted in greater ice mass and thickness on the surface. Additionally, an increase in droplet diameter increased the adhesion surface between ice and the airfoil surface [ 31 , 32 ]. The results obtained in the study show a linearly increase in ice thickness from the root to tip when MVD was considered validating the results [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

Study on influence of turbulence intensity on blade airfoil icing mass & aerodynamic performance

Rotich,

Chepkirui

2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Study on influence of turbulence intensity on blade airfoil icing mass & aerodynamic performance

Rotich,

Chepkirui

2024

Heliyon

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“…With a decrease in temperature, the freezing coefficient increases, the amount of water droplets freezing increases after collision, the flow characteristics of the water film are less obvious, and the maximum icing thickness area is closer to the leading edge of the blades. Cao et al [53] studied the influence of different temperatures on blade icing under the conditions of glaze and rime formation, respectively, as shown in Figure 10 [53]. In the study of Yirtici et al [54], the icing prediction method combined with a blade unit momentum tool was used to study the icing of blades at −5 • C, −10 • C and −15 • C when the rated wind speed was 11 m/s for 45 min.…”

Section: Influence Factors Of Turbine Blade Icingmentioning

confidence: 99%

“…The icing mass increased linearly with the increase in wind speed, and the icing mass on the blades surface increased with the increase in wind speed, mainly because the wind speed directly influenced the water droplets collected on the blades surface. Cao et al [53] took a 5 MW offshore wind turbine as the research object and carried out numerical simulation of its icing. When the ambient air temperature meets the icing conditions of glaze, the lower the temperature, the more icing.…”

Section: Influence Factors Of Turbine Blade Icingmentioning

confidence: 99%

A Review of Wind Turbine Icing and Anti/De-Icing Technologies

Zhang,

Zhang

et al. 2024

Energies

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The development and utilization of clean energy is becoming more extensive, and wind power generation is one of the key points of this. Occasionally, wind turbines are faced with various extreme environmental impacts such as icing, lightning strikes and so on. In particular, the icing of wind turbines increases icing–wind loads, and results in a reduced power output. And blades broken down lead to large-area shutdown accidents caused by high-speed rotating, which seriously affects the reliability and equipment safety of wind power generation. Relevant institutions and researchers at home and abroad have carried out a lot of research on this. This paper summarizes the formation and influencing factors of wind turbine icing, the influence of icing on wind power generation, and defense technologies. First, it introduces the formation conditions and mechanisms of icing in wind farm regions and the relationship between meteorological and climatic characteristics and icing, and analyzes the key influence factors on icing. Then, the impact of icing on wind turbines is explained from the aspects of mechanical operation, the power curve, jeopardies and economic benefits. And then the monitoring and safety status of wind turbines icing is analyzed, which involves collecting the relevant research on anti-de-icing in wind power generation, introducing various anti/de-icing technologies, and analyzing the principle of icing defense. Finally, this paper summarizes wind turbine icing and its defense technologies, and puts forward the future research direction based on the existing problems of wind power generation icing.

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“…The water droplets used in the air flow were pure water. In contrast, the working conditions of offshore wind turbines are significantly different from those of onshore wind turbines [10,11]. In addition to the difference in humidity, the composition of water droplets is also different.…”

Section: Introductionmentioning

confidence: 97%

A Visualization Experiment on Icing Characteristics of a Saline Water Droplet on the Surface of an Aluminum Plate

Zhang,

Zhou,

Shi

et al. 2024

Coatings

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When the offshore device, such as an offshore wind turbine, works in winter, ice accretion often occurs on the blade surface, which affects the working performance. To explore the icing characteristics on a microscale, the freezing characteristics of a water droplet with salinity were tested in the present study. A self-developed icing device was used to record the icing process of a water droplet, and a water droplet with a volume of 5 μL was tested under different salinities and temperatures. The effects of salinity and temperature on the profile of the iced water droplet, such as the height and contact diameter, were analyzed. As the temperature was constant, along with the increase in salinity, the height of the iced water droplet first increased and then decreased, and the contact diameter decreased. The maximum height of the iced water droplet was 1.21 mm, and the minimum contact diameter was 3.67 mm. With the increase in salinity, the icing time of the water droplet increased, yet a minor effect occurred under low temperatures such as −18 °C. Based on the experimental results, the profile of the iced water droplet was fitted using the polynomial method, with a coefficient of determination (R2) higher than 0.99. Then the mathematical model of the volume of the iced water droplet was established. The volume of the iced water droplet decreased along with temperature and increased along with salinity. The largest volume was 4.1 mm3. The research findings provide a foundation for exploring the offshore device icing characteristics in depth.

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Numerical Simulation of Icing on Nrel 5-MW Reference Offshore Wind Turbine Blades Under Different Icing Conditions

Cited by 11 publications

References 26 publications

Study on influence of turbulence intensity on blade airfoil icing mass & aerodynamic performance

Study on influence of turbulence intensity on blade airfoil icing mass & aerodynamic performance

A Review of Wind Turbine Icing and Anti/De-Icing Technologies

A Visualization Experiment on Icing Characteristics of a Saline Water Droplet on the Surface of an Aluminum Plate

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