Experimental study of ice accretion effects on aerodynamic performance of an NACA 23012 airfoil

Pouryoussefi, Sohrab Gholamhosein; Mirzaei, Mehran; Nazemi, Mohammad-Mahdi; Fouladi, Mojtaba; Doostmahmoudi, Alireza

doi:10.1016/j.cja.2016.03.002

Cited by 60 publications

(37 citation statements)

References 8 publications

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“…Fig. 8 shows that the lift curve measured in this work is similar to Pouryoussefi et al's results [28], whereas Ashenden et al [27] has a similar behaviour to XFOIL. The reduction in measured lift performance could be due to the different measuring techniques: Ashenden et al measured local section lift coefficient using pressure taps, whereas the presented results correspond to the average total lift as measured by the force balances.…”

Section: A Aerodynamic Forcessupporting

confidence: 86%

“…8 shows both experimental and predicted lift and drag curves. The experimental data was obtained from Ashenden et al [27] and Pouryoussefi et al [28], which both tested at similar Reynolds numbers (Re = 550000 and Re = 600000, respectively). However, it is important to note that these two experiments used pressure taps on the surface to obtain both lift and drag.…”

Section: A Aerodynamic Forcesmentioning

confidence: 99%

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Wind Tunnel Comparison of Flapped and FishBAC Camber Variation for Lift Control

Rivero

Fournier

Μανωλέσος

et al. 2020

AIAA Scitech 2020 Forum

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Unlike hinged flaps (e.g. ailerons, elevator and rudder), camber morphing devices vary camber distribution in a smooth and continuous way, resulting on aerodynamic efficiency improvements due to the absence of surface discontinuities. One such camber morphing concept, the Fish Bone Active Camber (FishBAC) device, has shown significant aerodynamic benefits when compared to a flap. A 2D wind tunnel test was performed to further investigate the FishBAC's behavior in terms of its aerodynamic performance and the size and structure of the shed wake. To establish a direct comparison, a hinged flap was also tested under equivalent flow conditions. A combination of quasi-steady force balance and wake rake pressure measurements were used to determine aerodynamic force coefficients. Additionally, these measurements are complemented by a flow visualization study performed using Particle Image Velocimetry, where a visual comparison on the size and vortical structure of the near field wakes was conducted. Results show that the FishBAC achieves at least 16% higher aerodynamic efficiency than the flap.

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Section: A Aerodynamic Forcessupporting

confidence: 86%

Section: A Aerodynamic Forcesmentioning

confidence: 99%

Wind Tunnel Comparison of Flapped and FishBAC Camber Variation for Lift Control

Rivero

Fournier

Μανωλέσος

et al. 2020

AIAA Scitech 2020 Forum

View full text Add to dashboard Cite

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“…Figure shown the icing blades, and the surface icing on the blades can seriously affect the power generation efficiency of the wind turbine . For example, North America and China often install wind farms in the mountains of the cold regions but the wind turbine blades freeze causes a large amount of power loss.…”

Section: Introductionmentioning

confidence: 99%

A review on ice detection technology and ice elimination technology for wind turbine

et al. 2019

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Blade icing can affect wind turbines to generate electricity. In severe cases, 30% of power generation is lost in a year, and safety problems in the vicinity of wind power plants are also caused. Researchers have designed anti-icing and de-icing technologies to reduce these effects, and excellent ice-detecting devices are a prerequisite for using anti-icing and de-icing technologies. Ultrasonic attenuation technology can effectively and reliably detect the presence of ice without affecting the aerodynamic performance of the blade, providing a reliable guarantee for anti-icing and de-icing systems. Deicing and anti-icing systems are divided into active and passive, active heating blades are still the most effective anti-icing and de-icing methods, but their energy consumption is too high. Although there are many existing de-icing methods, there are not many practical uses. This article introduces them separately and lists their advantages and disadvantages. The use of ultrasonic anti-icing and de-icing is an economical and reliable means that has been proven to be used for anti-icing and de-icing of blades. However, under normal circumstances, a single anti-icing de-icing system cannot completely solve the problem of icing of the blades. This paper suggests using both ultrasonic and hydrophobic coatings to cope with more icing conditions. K E Y W O R D Santi-icing and deicing technology, fan blade, hydrophobic coating, ice detection technology, ultrasonic deicing | INTRODUCTIONWith the rapid development of the world economy, lots of countries are increasingly demanding energy resources. Owing to release a lot of greenhouse gases, chemicals and toxins substances from the combustion of the fossil fuels such as coal and oil, 1 People began to look for renewable energy to provide energy consumption, such as wind energy, 2-4 hydrogen energy, 5-7 solar energy, 8-10 biogas and biomass energy. 11-15 With the wind power growing rapidly, generate electricity by using wind turbines is economical and environmentally friendly. 16 As can be seen in Figure 1, China's total installed capacity of wind turbines in 2016 is much higher than in other countries.China has the largest wind power market in the country, and the installed capacity of wind power is growing steadily year by year. The high density of air is conducive to the development of wind energy resources in cold regions. Figure 2 shows wind resource changes in different seasons. The wind speed from June to August is significantly lower than other months. There are also data showing that wind resources in cold regions are 10% higher than other regions. 17,18

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“…The severity of icing at different places on the blade as well as its non‐uniform distribution can increase drag, decrease lift and generate excessive vibration problems due to the irregular icing of the blade 8 . Cold weather is an important factor in design, analysis, and performance tests of wind turbines 9 . It is essential to provide insight into the behaviour of ice and the damage associated with its shedding problems as well as the behaviour of thermoplastic composites in northern conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of ice accretion on an offshore composite wind turbine under critical loads

Lagdani¹,

Tarfaoui

Nachtane

et al. 2020

Int J Energy Res

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Summary In northern regions, wind turbines are affected by the formation of ice on the surface of their structures, which usually occurs on moving blades, resulting in a significant decrease in aerodynamic performance and then the output power tends to reduce. This research evaluates the mechanical behavior and damage of the proposed composite blade structure under icing conditions. A comparative evaluation was carried out considering three ice configurations and three blade positions. The results are then examined and analysed. During this study, the blade in service was subjected to three different critical loads. A numerical simulation is adopted using finite element method (FEM) with ABAQUS software to localize damage in the composite wind turbine blade. The method developed is based on the failure criteria of HASHIN to detect failure modes in large structures and to identify the most sensitive zones. Major damage appeared in the transition region and was the principal reason for the composite blade failure. Furthermore, greater strength and stiffness were found with Carbon (CC) fibers blade designs, whereas configuration 3 was found to be the best one, and the optimal blade position was when the ice structure was placed vertically.

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Experimental study of ice accretion effects on aerodynamic performance of an NACA 23012 airfoil

Cited by 60 publications

References 8 publications

Wind Tunnel Comparison of Flapped and FishBAC Camber Variation for Lift Control

Wind Tunnel Comparison of Flapped and FishBAC Camber Variation for Lift Control

A review on ice detection technology and ice elimination technology for wind turbine

Numerical investigation of ice accretion on an offshore composite wind turbine under critical loads

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