Zobrazeno 1 - 10
of 56
pro vyhledávání: '"N. Nayeri"'
Autor:
Sirko Bartholomay, Sascha Krumbein, Sebastian Perez‐Becker, Rodrigo Soto‐Valle, Christian N. Nayeri, Christian O. Paschereit, Kilian Oberleithner
Publikováno v:
Wind Energy, Vol 26, Iss 2, Pp 201-227 (2023)
Abstract This paper presents an experimental assessment of a blended fatigue‐extreme controller for load control employing trailing edge flaps on a lab‐scale wind turbine. The controller blends between a repetitive model predictive controller tha
Externí odkaz:
https://doaj.org/article/f4bcb4019e99486e83d6f53770ef70b2
Autor:
A. Bianchini, G. Bangga, I. Baring-Gould, A. Croce, J. I. Cruz, R. Damiani, G. Erfort, C. Simao Ferreira, D. Infield, C. N. Nayeri, G. Pechlivanoglou, M. Runacres, G. Schepers, B. Summerville, D. Wood, A. Orrell
Publikováno v:
Wind Energy Science, Vol 7, Pp 2003-2037 (2022)
While modern wind turbines have become by far the largest rotating machines on Earth with further upscaling planned for the future, a renewed interest in small wind turbines (SWTs) is fostering energy transition and smart grid development. Small mach
Externí odkaz:
https://doaj.org/article/12c7f7f950d740dfaaab888767a4c5cd
Autor:
Sirko Bartholomay, Sascha Krumbein, Victoria Deichmann, Maik Gentsch, Sebastian Perez‐Becker, Rodrigo Soto‐Valle, David Holst, Christian N. Nayeri, Christian O. Paschereit, Kilian Oberleithner
Publikováno v:
Wind Energy, Vol 25, Iss 7, Pp 1290-1308 (2022)
Summary This paper presents the results of an advanced control strategy that employs active trailing edge flaps to reduce the fatigue loads of an experimental wind turbine. The strategy, called repetitive model predictive control, is a multiple‐inp
Externí odkaz:
https://doaj.org/article/711be19d06384fcbb9d5159c64f5afee
Autor:
J. Alber, M. Manolesos, G. Weinzierl-Dlugosch, J. Fischer, A. Schönmeier, C. N. Nayeri, C. O. Paschereit, J. Twele, J. Fortmann, P. F. Melani, A. Bianchini
Publikováno v:
Wind Energy Science, Vol 7, Pp 943-965 (2022)
This wind tunnel study investigates the aerodynamic effects of mini Gurney flaps (MGFs) and their combination with vortex generators (VGs) on the performance of airfoils and wind turbine rotor blades. VGs are installed on the suction side aiming at s
Externí odkaz:
https://doaj.org/article/745114495c2e4a3082401e995f07528c
Autor:
R. Soto-Valle, S. Cioni, S. Bartholomay, M. Manolesos, C. N. Nayeri, A. Bianchini, C. O. Paschereit
Publikováno v:
Wind Energy Science, Vol 7, Pp 585-602 (2022)
This study describes the impact of postprocessing methods on the calculated parameters of tip vortices of a wind turbine model when tested using particle image velocimetry (PIV). Several vortex identification methods and differentiation schemes are c
Externí odkaz:
https://doaj.org/article/c346fc4c7d3c4230b92f361488e49e37
Autor:
S. Bartholomay, T. T. B. Wester, S. Perez-Becker, S. Konze, C. Menzel, M. Hölling, A. Spickenheuer, J. Peinke, C. N. Nayeri, O. P. Paschereit, K. Oberleithner
Publikováno v:
Wind Energy Science, Vol 6, Pp 221-245 (2021)
This experimental load control study presents results of an active trailing-edge flap feedforward controller for wind turbine applications. The controller input is derived from pressure-based lift estimation methods that rely either on a quasi-steady
Externí odkaz:
https://doaj.org/article/51f3b8b5e329446a85efd36508c28f25
Publikováno v:
Wind Energy Science, Vol 5, Pp 1771-1792 (2020)
In this paper, a method to determine the angle of attack on a wind turbine rotor blade using a chordwise pressure distribution measurement was applied. The approach used a reduced number of pressure tap data located close to the blade leading edge. T
Externí odkaz:
https://doaj.org/article/7735b1d4e6c04660a768a5c4ed91a166
Autor:
J. Alber, R. Soto-Valle, M. Manolesos, S. Bartholomay, C. N. Nayeri, M. Schönlau, C. Menzel, C. O. Paschereit, J. Twele, J. Fortmann
Publikováno v:
Wind Energy Science, Vol 5, Pp 1645-1662 (2020)
This paper investigates the aerodynamic impact of Gurney flaps on a research wind turbine of the Hermann-Föttinger Institute at the Technische Universität Berlin. The rotor radius is 1.5 m, and the blade configurations consist of the clean and th
Externí odkaz:
https://doaj.org/article/b03fc0c113604632b17b03f9d9f271d6
Publikováno v:
Fluids, Vol 7, Iss 5, p 166 (2022)
Aerodynamic performances of ground vehicle continuously improve and a lot of both wind tunnel measurements and Computational Fluid Dynamics (CFD) investigations contribute in the identification of local zones where shape deformation can lead to drag
Externí odkaz:
https://doaj.org/article/666052e5abe54a03940eb1b860f9cfa6
Autor:
A. C. Klein, S. Bartholomay, D. Marten, T. Lutz, G. Pechlivanoglou, C. N. Nayeri, C. O. Paschereit, E. Krämer
Publikováno v:
Wind Energy Science, Vol 3, Pp 439-460 (2018)
In the present paper, numerical and experimental investigations of a model wind turbine with a diameter of 3.0 m are described. The study has three objectives. The first one is the provision of validation data. The second one is to estimate the in
Externí odkaz:
https://doaj.org/article/86c1be077dfa4b4587ce0ac15f950ba8