Pressure Distribution on Rotating Blade of Field Horizontal Axis Wind Turbine : 4th report, Comparison of Field Test and Wind Tunnel Test

2002 ◽  
Vol 2002.8 (0) ◽  
pp. 667-670
Author(s):  
Takao MAEDA ◽  
Yasunari KAMATA ◽  
Yukimaru SHIMIZU ◽  
Atsushi KATO ◽  
Toshiyuki MIZUTANI ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Wind Turbine ◽  
Pressure Distribution ◽  
Field Test ◽  
Wind Tunnel Test ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbine ◽  
Rotating Blade

Measurement of Unsteady Aerodynamics Load on the Blade of Field Horizontal Axis Wind Turbine

2007 ◽  
Author(s):  
Takao Maeda ◽  
Yasunari Kamada ◽  
Keita Naito ◽  
Yuu Ouchi ◽  
Masayoshi Kozawa
Keyword(s):  
Wind Turbine ◽  
Pressure Distribution ◽  
Mode Frequency ◽  
Horizontal Axis ◽  
Strain Gauges ◽  
Aerodynamic Forces ◽  
Horizontal Axis Wind Turbine ◽  
Blade Root ◽  
Blade Section ◽  
Mechanical Moment

This paper describes an experimental field study of the rotor aerodynamics of wind turbines. The test wind turbine is a horizontal axis wind turbine, or: HAWT with a diameter of 10m. The pressure distributions on the rotating blade are measured with multi point pressure transducers. Sectional aerodynamic forces are analyzed from pressure distribution. Blade root moments are measured simultaneously by a pair of strain gauges. The inflow wind is measured by a three component sonic anemometer, the local inflow of the blade section are measured by a pair of 7 hole Pitot tubes. The relation between the aerodynamic moments on the blade root from pressure distribution and the mechanical moment from strain gauges is discussed. The aerodynamic moments are estimated from the sectional aerodynamic forces and show oscillation caused by local wind speed and direction change. The mechanical moment shows similar oscillation to the aerodynamic excepting the short period oscillation of the blade first mode frequency. The fluctuation of the sectional aerodynamic force triggers resonant blade oscillations. Where stall is present along the blade section, the blade’s first mode frequency is dominant. Without stall, the rotating frequency is dominant in the blade root moment.

scholarly journals Icing distribution of rotating blade of horizontal axis wind turbine based on Quasi-3D numerical simulation

2018 ◽  
Vol 22 (Suppl. 2) ◽  
pp. 681-691 ◽  
Author(s):  
Yan Li ◽  
Shaolong Wang ◽  
Ce Sun ◽  
Xian Yi ◽  
Wenfeng Guo ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Wind Turbine ◽  
Turbine Blades ◽  
Liquid Water Content ◽  
Horizontal Axis ◽  
Drop Diameter ◽  
Wind Turbine Blades ◽  
Horizontal Axis Wind Turbine ◽  
Rotating Blade ◽  
Temperature Liquid

For researching on the rules of icing distribution on rotating blade of horizontal axis wind turbine, a Quasi-3-D method is proposed to research on icing on rotating blades of horizontal axis wind turbine by numerical simulation. A 2-D and 3-D method of evaluating the irregular shape of ice has been established. The model of rotating blade from a 1.5 MW horizontal axis wind turbine is used to simulate the process and shape of icing on blade. The simulation is carried out under the conditions with four important parameters including ambient temperature, liquid water content, medium volume drop diameter, and icing time. The results reveal that icing mainly happens on 50% ~ 70% of the blade surface along wingspan from tip to root of blade. There are two kinds of icing shapes including horn shape icing and streamline shape icing. The study can provide theoretical basis and numerical reference to development of anti and deicing strategy for wind turbine blades.

Sign in / Sign up

Export Citation Format

Share Document