Searched for: subject%3A%22aerodynamic%255C+loads%22
(1 - 8 of 8)
document
Lima Pereira, L.T. (author), Ragni, D. (author), Avallone, F. (author), Scarano, F. (author)
The impact of aerodynamic loading on a serrated trailing edge is studied experimentally. Aerodynamic and acoustic measurements are conducted on a sawtooth-shaped trailing edge, retrofitted to a flat plate featuring a trailing-edge flap, and placed at incidence to the free-stream flow. The turbulent flow across the trailing edge is inspected...
journal article 2022
document
Sciacchitano, A. (author), Pattnaik, Pallav (author)
The flow field in the near wake of a 1:5.5 bobsleigh model was investigated by means of stereoscopic particle image velocimetry. The time-averaged flow field revealed two counter-rotating vortices and a strong downwash between them. From the velocity field, the aerodynamic drag was retrieved invoking the conservation of momentum. This approach...
conference paper 2018
document
Zhang, Y. (author), Gillebaart, T. (author), van Zuijlen, A.H. (author), van Bussel, G.J.W. (author), Bijl, H. (author)
This paper presents the experimental and numerical study on MEXICO wind turbine blades. Previous work by other researchers shows that large deviations exist in the loads comparison between numerical predictions and experimental data for the rotating MEXICO wind turbine. To reduce complexities and uncertainties, a non-rotating experimental...
journal article 2017
document
Lara-Quintanilla, A. (author), Hulskamp, A.W. (author), Bersee, H.E.N. (author)
This paper discusses the development of a high rate shape memory alloy (SMA) driven actuator. The concept of the actuator was developed to act as aerodynamic load control surface on wind turbines. It was designed as a plate or beam-like structure with prestrained SMA wires embedded off its neutral axis. Moreover, the SMA material was embedded in...
journal article 2013
document
Berg, D. (author), Wilson, D. (author), Resor, B. (author), Berg, J. (author), Barlas, J. (author), Crowther, A. (author), Halse, C. (author)
Prior work on active aerodynamic load control (AALC) of wind turbine blades has demonstrated that appropriate use of this technology has the potential to yield significant reductions in blade loads, leading to a decrease in wind cost of energy. While the general concept of AALC is usually discussed in the context of multiple sensors and active...
conference paper 2010
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Ragni, D. (author), Ashok, A. (author), van Oudheusden, B.W. (author), Scarano, F. (author)
The present investigation assesses a procedure to extract the aerodynamic loads and pressure distribution on an airfoil in the transonic flow regime from particle image velocimetry (PIV) measurements. The wind tunnel model is a two-dimensional NACA-0012 airfoil, and the PIV velocity data are used to evaluate pressure fields, whereas lift and...
journal article 2009
document
Tijdeman, H. (author)
Exploratory wind-tunnel experiments in high-subsonic and transonic flow on a conventional airfoil with oscillating flap and a supercritical airfoil oscillating in pitch are described. In the analysis of the experimental results, emphasis is placed upon the typical aspects of transonic flow, namely the interaction between the steady and unsteady...
report 1977
document
Tijdeman, H. (author), Zwaan, R.J. (author)
Possibilities to develop calculation methods for oscillating wings in transonic flow are discussed. Special attention is given to the question of linearisation. Recent NLR results of pressure measurements on an aerofoil with flap in transonic flow are analysed. Correlations are made between steady, quasi-steady and unsteady results. Shock motion...
report 1973
Searched for: subject%3A%22aerodynamic%255C+loads%22
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