Small wind, big potential: HAWT design case study

Grapow, Filip; Raszewska, Dominika; Skalski, Rafał; Czarnecki, Jeremiasz; Telega, Katarzyna; Miller, Marcin; Rogowski, Pawel; Prociów, Małgorzata

doi:10.1051/matecconf/201823401005

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…For each turbine, a comprehensive design report must be submitted, ensuring a detailed and reliable model description that serves as input for calculations and facilitates the interpretation of results (such model descriptions are typically considered confidential for field measurements on commercial wind turbines). Some experimental model validation using the ISWTC wind tunnel measurements has already been published by participants [2,3] but generally speaking the number of scientific analyses remained limited. The main aim of the present paper is then to explore the scientific or technological value of the ISWTC measurement database in a comprehensive way where recommendations are formulated to both future student teams and the organizers to enhance the value of future contests.…”

Section: Aim and Structure Of Papermentioning

confidence: 99%

Lessons learned from 10 years of wind tunnel tests on small wind turbines designed by students

Schepers,

Adema,

Lipian

et al. 2024

J. Phys.: Conf. Ser.

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This article discusses results from an international contest, open for university student teams (bachelor and master), involving the design, construction, and testing of small wind turbines in a large wind tunnel. The wind tunnel has an outlet of 2.85 x 2.85 m allowing a maximum rotor swept area of 2 m2 without significant tunnel effects. Both horizontal and vertical axis wind turbines are part of the competition. The turbines are evaluated by an external jury of industry experts based on criteria such as Annual Energy Production, cut-in wind speed, innovations, design, and sustainability. Although the contest has been initiated in 2013 with an educational focus, it has also evolved into a valuable database for scientific purposes by providing a decade worth of performance measurements for roughly 9-10 various turbine concepts each year. The collected data may serve as a unique validation resource for assessing the accuracy of design codes in modelling diverse turbine concepts thanks to detailed design reports with model descriptions accompanying each turbine (such turbine descriptions are often considered confidential for field measurements). The paper aims to explore the scientific value of this database by comparing calculations with measurements, offering explanations where possible, and reporting intriguing findings on unconventional concepts’ performance. Even though not all observations could be explained fully they provide food for thought. Recommendations are provided for both students to enhance their designs and for contest organizers to elevate the scientific value of the measurements in future contests.

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Section: Aim and Structure Of Papermentioning

confidence: 99%

Lessons learned from 10 years of wind tunnel tests on small wind turbines designed by students

Schepers,

Adema,

Lipian

et al. 2024

J. Phys.: Conf. Ser.

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“…The rotor is a three-bladed GUST HAWT. This small wind turbine has a nominal power 350 W at a wind velocity of 8.4 m/s [20]. The blades are of variable chord and twist angle ( Figure 1) and are constructed upon NREL S826 and S834 airfoils [21].…”

Section: Object Of the Studymentioning

confidence: 99%

Fluid–Structure Interaction Numerical Analysis of a Small, Urban Wind Turbine Blade

2020

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While the vast majority of the wind energy market is dominated by megawatt-size wind turbines, the increasing importance of distributed electricity generation gives way to small, personal-size installations. Due to their situation at relatively low heights and above-ground levels, they are forced to operate in a low energy-density environment, hence the important role of rotor optimization and flow studies. In addition, the small wind turbine operation close to human habitats emphasizes the need to ensure the maximum reliability of the system. The present article summarizes a case study of a small wind turbine (rated power 350 W @ 8.4 m/s) from the point of view of aerodynamic performance (efficiency, flow around blades). The structural strength analysis of the blades milled for the prototype was performed in the form of a one-way Fluid–Structure Interaction (FSI). Blade deformations and stresses were examined, showing that only minor deformations may be expected, with no significant influence on rotor aerodynamics. The study of an unorthodox material (PA66 MO polyamide) and application of FSI to examine both structural strength and blade deformation under different operating conditions are an approach rarely employed in small wind turbine design.

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Numerical Simulation of Strength and Aerodynamic Characteristics of Small Wind Turbine Blades

Sierikova

Strelnikova

Degtyariov

2023

Integrated Computer Technologies in Mechanical Engineering - 2022

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Small wind, big potential: HAWT design case study

Cited by 3 publications

References 5 publications

Lessons learned from 10 years of wind tunnel tests on small wind turbines designed by students

Lessons learned from 10 years of wind tunnel tests on small wind turbines designed by students

Fluid–Structure Interaction Numerical Analysis of a Small, Urban Wind Turbine Blade

Numerical Simulation of Strength and Aerodynamic Characteristics of Small Wind Turbine Blades

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