On the wind blade's surface roughness due to dust accumulation and its impact on the wind turbine's performance: A heuristic QBlade‐based modeling assessment

Papadopoulou, Kalliopi; Alasis, Christos; Xydis, George

doi:10.1002/ep.13296

Cited by 13 publications

(3 citation statements)

References 26 publications

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“…If the partnership between U-I is successfully established and stable regarding knowledge-transfer and coordination, both participants can benefit in various sectors. The data from academia can be utilised to build new ideas (Xydis, Pechlivanoglou, & Nayeri, 2015), proof of concepts (Papadopoulou, Alasis, & Xydis, 2019), and eventually products (Koscis & Xydis, 2019). According to Lee (2000), each participant must fulfil the requirements and needs of the other in order to maintain this profitable collaboration and both of them achieve their goals.…”

Section: Literature Reviewmentioning

confidence: 99%

A University-industry knowledge transfer online education approach via a cloud-based database global solution

Tzavidas

Enevoldsen

Xydis

2020

Smart Learn. Environ.

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Knowledge sharing between different types of organisations, in this case the University-Industry (U-I) relation, contains barriers related to the differentiation of structure and purpose for each organisation. Both the university and industry have to make sure that they have access to data and information. This accessibility enables the value-added process of transforming data into knowledge. The purpose of this paper is the analysis of U-I cooperation-especially under the new online requirementsan illustration of how the knowledge is created and shared in the organisation based on the socialisation, externalisation, combination, and internalisation (SECI) model and how this is aligned to the value proposition. As a knowledge management example case, a database for the Centre for Energy Technologies of Aarhus University was developed that will overtime help the university to increase its value proposition and be the heart of knowledge exchange with the industry in an organised way. The value of this work is intended to pave the way in building structured working relations between the industry and academia, facilitating the means in order to achieve a higher degree of overall efficiency.

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Section: Literature Reviewmentioning

confidence: 99%

A University-industry knowledge transfer online education approach via a cloud-based database global solution

Tzavidas

Enevoldsen

Xydis

2020

Smart Learn. Environ.

Self Cite

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“…Jung and Baeder (2020) studied the effects of the surface roughness of the NERL Phase VI wind turbine blades on the airflow characteristics. Papadopoulou et al (2020) investigated the accumulation of dust of wind turbine blades in different areas. They found that the accumulation of dust caused power dissipation.…”

Section: Introductionmentioning

confidence: 99%

Investigate aerodynamic performance of wind turbine blades with vortex generators at the transition area

Chen

Wang

et al. 2021

Wind Engineering

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The transition area of the blade had a large relative thickness of airfoil, which was prone to the flow separation. The vortex generators (VGs) could restrain the flow separation. In this paper, the VGs were installed at the transition area of the WindPACT 1.5 MW wind turbine blades. The numerical simulation method was used to investigate the effects of the VGs on the aerodynamic performance of the blade. The high-energy vortexes were generated at the tail by the VG. It could change the energy distribution and flow characteristics of the airflow in the boundary layer. There were influences by the geometric parameters of the VGs. The VGs could change the aerodynamic performance at the transition area of the blade. A satisfactory result was obtained for reasonable geometrical parameters of the VGs. It also could restrain the flow separation of the blade surface and improve the torque.

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“…Corsini et al 18 found that at the same operating point and power output, different blade geometries lead to different local flow fields, leading to completely different forms of erosion on wind turbines. Also, Papadopoulou 19 studied the influence of sand particles on the aerodynamic performance of wind turbines, and Fan 20 studied the influence of volume fraction and particle diameter on the torque characteristics of wind turbines using numerical simulation methods. The results showed that the torque of wind turbines in a sand-wind flow is greater than that in a clean airflow in the wind speed range of 3 to 17 m/s, indicating that sand-wind flow can increase the power output of wind turbines.…”

Section: Introductionmentioning

confidence: 99%

Research on aerodynamic characteristics of wind turbine airfoil and blade in sand‐wind environment

Chen

et al. 2020

Int Trans Electr Energ Syst

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In Northwest China, wind resources are especially abundant, but this area is also seriously affected by sandy environments, so any wind turbines in this area are definitely affected by the sand-wind flow. Therefore, the shear stress transport k-ω turbulence model and discrete phase model are both used for the simulation of an S809 airfoil to study the influence of sandy environments on the aerodynamic performance. Based on this, the modified blade element momentum theory will be used to design wind turbines that can operate in both clean air and sandy environments and study the influence of sandy environments on wind turbine performance. The results show that the influence of the sand-wind environment on the aerodynamic performance of the airfoil is as follows. In the particle diameter range of 5 to 30 μm, as the particle diameter increases, the lift coefficient decreases, and the drag coefficient increases. However, in the particle diameter range of 30 to 100 μm, the change is just the opposite. At the same time, as the increase of particle mass concentration, the lift coefficient of the airfoil decreases, and the drag coefficient significantly increases. Also with the increase of equivalent density, the change is just the opposite. Moreover, the influence of sandy environments on the performance of wind turbines is found to be as follows. At low wind speeds, the power output of the sandy turbine is greater than that of the clean turbine when they run in a sandy environment. Also, it is found that whether wind turbines run at high or low wind speeds, the thrust of sandy turbine is less than that of clean turbine when they run in sandy environments.

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On the wind blade's surface roughness due to dust accumulation and its impact on the wind turbine's performance: A heuristic QBlade‐based modeling assessment

Cited by 13 publications

References 26 publications

A University-industry knowledge transfer online education approach via a cloud-based database global solution

A University-industry knowledge transfer online education approach via a cloud-based database global solution

Investigate aerodynamic performance of wind turbine blades with vortex generators at the transition area

Research on aerodynamic characteristics of wind turbine airfoil and blade in sand‐wind environment

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