Results 71 to 80 of about 104,934 (214)
Investigation of unsteady flow development over a pitching airfoil by means of TR-PIV [PDF]
, 2009 The flow over an OA209 airfoil subjected to a sinusoidal pitching motion under dynamic stall conditions is investigated experimentally by means of time resolved particle image velocimetry (TR-PIV) and surface pressure measurements.
Costes, Michel +5 more
core
Unsteady Aerodynamics of Delta Kites for Airborne Wind Energy Under Dynamic Stall Conditions
Wind EnergyThree unsteady aerodynamic tools at different levels of fidelity and computational cost were used to investigate the unsteady aerodynamic behavior of a delta kite applied to airborne wind energy.
I. Castro‐Fernández +3 more
doaj +1 more source
ActuatorsThe influencing characteristic for the evolution mechanism of a dynamic stall vortex structure and distributed blowing control on rotor airfoils was investigated. Based on the moving-embedded grid method, the finite volume scheme, and Roe’s FDS scheme, a
Guoqiang Li +3 more
doaj +1 more source
Prediction of axial-flow instabilities in a turbojet engine by use of a multistage compressor simulation on the digital computer [PDF]
A method of estimating the undistorted stall line for an axial-flow compressor by using the digital computer is presented. The method involves linearization of nonlinear dynamic equations about an operating point on a speed line, and then application of ...
Blaha, R. J. +2 more
core +1 more source
Chinese Journal of Mechanical Engineering, 2019 The unstable flow phenomena in compressors, such as stall and surge, are closely related to the efficiency and the operating region. It is indispensable to capture the unstable flow structure in compressors and understand the mechanism of flow ...
Xiang Xue, Tong Wang
doaj +1 more source
The Dynamics of SecM-Induced Translational Stalling
Cell Reports, 2014 SecM is an E. coli secretion monitor capable of stalling translation on the prokaryotic ribosome without cofactors. Biochemical and structural studies have demonstrated that the SecM nascent chain interacts with the 50S subunit exit tunnel to inhibit peptide bond formation.
Albert Tsai +4 more
openaire +3 more sources
Aerodynamic Performance of Wind Turbine Airfoil DU 91-W2-250 under Dynamic Stall
Applied Sciences, 2018 Airfoils are subjected to the ‘dynamic stall’ phenomenon in significant pitch oscillations during the actual operation process of wind turbines.
Shuang Li +4 more
doaj +1 more source
Comparison of three methods for calculation of helicopter rotor blade loading and stresses due to stall [PDF]
A comparison is made of the results of three methods for calculating the effects of dynamic stall on the performance, airloads, and blade stresses of a helicopter rotor at high loading.
Johnson, W.
core +1 more source
Passive control of the flow around unsteady aerofoils using a self-activated deployable flap [PDF]
, 2017 Self-activated feathers are used by many birds to adapt their wing characteristics to the sudden change of flight incidence angle. In particular, dorsal feathers are believed to pop-up as a consequence of unsteady flow separation and to interact with the
Omidyeganeh, M. +2 more
core +1 more source
EnergiesPresent studies are specifically aimed at investigating the sensitivity of different dynamic stall models when exposed to various excitation frequencies. The investigations are targeted at blade edgewise vibrations.
Galih Bangga
doaj +1 more source