Airfoil Shaped Vortex Generators applied on a Research Wind Turbine

Soto, Rodrigo; Bartholomay, Sirko; Μανωλέσος, Μαρίνος; Nayeri, Christian Navid; Paschereit, C. O.

doi:10.2514/6.2021-1413

Cited by 3 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Several parameters are crucial in the downstream evolution of streamwise vortices caused by VGs, influencing aerodynamic performance, such as VG height, distance, orientation, angle to the oncoming flow and chordwise location [7,13]. Vane type VGs remain the industry standard despite some studies indicating that aerodynamically shaped VGs show promise [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Performance improvement of a Vestas V52 850kW wind turbine by retrofitting passive flow control devices

Manolesos,

Celik,

Ramsay

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

This study presents the results of a collaborative effort between academia and industry aimed at further enhancing the benefits provided by Vortex Generators and Gurney Flaps. To achieve this objective, an integrated approach was employed, involving wind tunnel experiments, on-site measurements, and computational simulations to design devices tailored for an onshore (Vestas V52, 850 kW) turbine and assess their influence on turbine performance. Device selection was based on wind tunnel measurements, while their positioning on the blade was based on infrared thermography images from the field. A Reynolds Averaged Navier Stokes solver was used to predict the performance of the devices on both airfoil and blade level. The final assessment of the upgrade pack was based on SCADA data and Lidar measurements. The results show that an Annual Energy Production uplift of 5.77% is measured for this turbine.

show abstract

Section: Introductionmentioning

confidence: 99%

Performance improvement of a Vestas V52 850kW wind turbine by retrofitting passive flow control devices

Manolesos,

Celik,

Ramsay

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…La optimización de la geometría del perfil es un área donde las simulaciones computacionales, junto con resultados experimentales, han ayudado a determinar que una geometría optimizada atrasa la separación del flujo, lo cual incrementa la potencia obtenida por 7.5 % [11]. En [17] tres diferentes geometrías de generadores de vórtices se pusieron a prueba, una rectangular, triangular y una Clark-Y; esto debido a que los generadores de vórtices pueden ser utilizados para optimizar el flujo en las aspas de las turbinas, esto puede mejorar la energía anual producida de 1% a 3%. No obstante, otros estudios concluyen que las simulaciones numéricas no son suficientes para describir adecuadamente las condiciones del viento alrededor del perfil; en una de estas se descubrió una relación inversa entre la velocidad del flujo del jet y el coeficiente de arrastre [18].…”

Section: Introductionunclassified

Comportamiento de la intensidad de turbulencia en distintas áreas transversales en un túnel de viento

Richmond-Navarro,

Arias-Arguedas,

Casanova-Treto

2023

View full text Add to dashboard Cite

Considerando que cada vez más turbinas eólicas operan en condiciones de turbulencia, este estudio sobre la intensidad de turbulencia (TI) en distintas áreas transversales en un túnel de viento se llevó a cabo. Un túnel de viento con un área de pruebas de 15 m de largo, 3.6 m de ancho y 2 m de alto se utilizó; se colocó una cuadricula de madera para generar turbulencia en el flujo y la velocidad del ciento se midió con un anemómetro de hilo caliente. Para determinar si hubo variaciones en la TI se definieron cinco puntos (centro, arriba, abajo, izquierda y derecha) en cuatro áreas transversales luego de la cuadricula de madera. Se determinó que la TI varía drásticamente dentro del área. Se calculó un porcentaje de error desde 3.6 % a 15.2 % cuando se consideraba la variación de la turbulencia dentro del área del rotor en comparación con cuando se usa solamente el punto en el eje del rotor. Para poder describir apropiadamente el flujo turbulento es necesario considerar el promedio de las mediciones de la turbulencia alrededor del área que cubre el rotor.

show abstract

Rotating Microtab Implementation on a DU91W250 Airfoil Based on the Cell-Set Model

et al. 2021

View full text Add to dashboard Cite

Flow control device modeling is an engaging research field for wind turbine optimization, since in recent years wind turbines have grown in proportions and weight. The purpose of the present work was to study the performance and effects generated by a rotating microtab (MT) implemented on the trailing edge of a DU91W250 airfoil through the novel cell-set (CS) model for the first time via CFD techniques. The CS method is based on the reutilization of an already calculated mesh for the addition of new geometries on it. To accomplish that objective, the required region is split from the main domain, and new boundaries are assigned to the mentioned construction. Three different MT lengths were considered: h = 1%, 1.5% and 2% of the airfoil chord length, as well as seven MT orientations (β): from 0° to −90° regarding the horizontal axis, for five angles of attack: 0°, 2°, 4°, 6° and 9°. The numerical results showed that the increases of the β rotating angle and the MT length (h) led to higher aerodynamic performance of the airfoil, CL/CD = 164.10 being the maximum ratio obtained. All the performance curves showed an asymptotic trend as the β angle reduced. Qualitatively, the model behaved as expected, proving the relationship between velocity and pressure. Taking into consideration resulting data, the cell-set method is appropriate for computational testing of trailing edge rotating microtab geometry.

show abstract

Airfoil Shaped Vortex Generators applied on a Research Wind Turbine

Cited by 3 publications

References 20 publications

Performance improvement of a Vestas V52 850kW wind turbine by retrofitting passive flow control devices

Performance improvement of a Vestas V52 850kW wind turbine by retrofitting passive flow control devices

Comportamiento de la intensidad de turbulencia en distintas áreas transversales en un túnel de viento

Rotating Microtab Implementation on a DU91W250 Airfoil Based on the Cell-Set Model

Contact Info

Product

Resources

About