2-D CFD Computations of the Two-Bladed Darrieus-Type Wind Turbine
In spite of the attractiveness of CFD methods and advanced measurement methods, there is still no full analysis of aerodynamic blade loads for vertical axis Darrieus-type wind turbines.
K. Rogowski, M. O. L. Hansen, P. Lichota
doaj
The Frequency-Variable Rotor-Blade-Based Two-Degree-of-Freedom Actuation Principle for Linear and Rotary Motion. [PDF]
Li X +6 more
europepmc +1 more source
Effects of rotor location, coning, and tilt on critical loads in large wind turbines [PDF]
Several large (1500 kW) horizontal rotor configurations were analyzed to determine the effects on dynamic loads of upwind downwind rotor locations, coned and radial blade positions, and tilted and horizontal rotor axis positions.
Janetzke, D. C., Spera, D. A.
core +1 more source
Alleviation of unbalanced rotor loads by single blade controllers [PDF]
A novel approach to reducing the unbalance rotor loads by pitch control is presented in this paper. Each blade has its own actuator, sensors and controller.
Dominguez, S. +2 more
core
One day of environment‐induced heat stress causes injury to the murine kidney
Abstract Environment‐induced heat stress (EIHS) results from sustained body temperature elevation owing to prolonged exposure to heat and humidity. We hypothesized that EIHS would cause kidney injury and cellular dysfunction. To test this hypothesis, female C57 mice were exposed to EIHS (n = 14; 37.6°C, 42.0% relative humidity) or thermoneutral (TN ...
Melissa Roths +3 more
wiley +1 more source
The paper presents numerical results analysis of main rotor vibration due to helicopter main rotor thrust pulsation.The calculation method, the object of research and numerical research results with the aim to reduce the amplitude of the vibrations ...
B. S. Kritsky +2 more
doaj
Helicopter Main Rotor Blade Parametric Design for a Preliminary Aerodynamic Analysis Supported by CFD or Panel Method. [PDF]
Kocjan J, Kachel S, Rogólski R.
europepmc +1 more source
Segmented Gurney Flaps for Improved Wind Turbine Wake Recovery
ABSTRACT When wind passes through the rotor of a wind turbine, the velocity is decreased while turbulence is increased. The region of decreased wind speed behind the rotor is known as the wind turbine wake and is bounded by a complex structure of helical vortices. This structure occurs to be more stable in low ambient turbulence and low tip speed ratio
Nirav Dangi +4 more
wiley +1 more source
Wake characteristics of a freely rotating bioinspired swept rotor blade. [PDF]
Nafi AS +4 more
europepmc +1 more source
Redesigned rotor for a highly loaded, 1800 ft/sec tip speed compressor fan stage 1: Aerodynamic and mechanical design [PDF]
A highly loaded, high tip-speed fan rotor was designed with multiple-circular-arc airfoil sections as a replacement for a marginally successful rotor which had precompression airfoil sections. The substitution of airfoil sections was the only aerodynamic
Halle, J. E., Ruschak, J. T.
core +1 more source

