Estimation of the lifetime of a trapped vortex in a circular cavern on a semicircular airfoil streamlined at a zero angle of attack after switching off slot suction

2017 ◽  
Vol 43 (4) ◽  
pp. 338-340 ◽  
Author(s):  
S. A. Isaev ◽  
P. A. Baranov ◽  
A. G. Sudakov ◽  
I. A. Popov ◽  
A. E. Usachov
Keyword(s):  
Angle Of Attack ◽  
Slot Suction ◽  
Trapped Vortex ◽  
Semicircular Airfoil

Controlling the Flow past a Semicircular Airfoil at Zero Angle of Attack Using Slot Suction in One or Two Vortex Cells for Attaining Extremal Lift

2017 ◽  
Vol 43 (12) ◽  
pp. 1115-1117 ◽  
Author(s):  
S. A. Isaev ◽  
P. A. Baranov ◽  
A. G. Sudakov ◽  
I. A. Popov ◽  
A. E. Usachov
Keyword(s):  
Angle Of Attack ◽  
Flow Past ◽  
Slot Suction ◽  
Semicircular Airfoil

Analysis of extremal lift behavior of a semicircular airfoil in a turbulent airflow at a near-zero angle of attack

2015 ◽  
Vol 41 (8) ◽  
pp. 737-739 ◽  
Author(s):  
S. A. Isaev ◽  
J.-J. Miau ◽  
A. G. Sudakov ◽  
A. E. Usachov
Keyword(s):  
Angle Of Attack ◽  
Turbulent Airflow ◽  
Semicircular Airfoil

Flow control of the semicircular airfoil with a vortex cell at slot suction of air and its blowout into the near wake

2016 ◽  
Vol 23 (5) ◽  
pp. 639-643 ◽  
Author(s):  
S. A. Isaev ◽  
P. A. Baranov ◽  
M. Yu. Smurov ◽  
A. G. Sudakov ◽  
A. V. Shebelev
Keyword(s):  
Flow Control ◽  
Vortex Cell ◽  
Near Wake ◽  
Slot Suction ◽  
Semicircular Airfoil

A New Design Concept for Wind Turbine Airfoil

2015 ◽  
Vol 798 ◽  
pp. 8-14
Author(s):  
Kun Ye ◽  
Zheng Yin Ye ◽  
Zhan Qu
Keyword(s):  
Wind Turbine ◽  
Aerodynamic Characteristic ◽  
Lift Coefficient ◽  
Angle Of Attack ◽  
Separated Flow ◽  
Aerodynamic Characteristics ◽  
Starting Point ◽  
Wide Range ◽  
Wind Turbine Airfoil ◽  
Trapped Vortex

Wind energy has been attracting more and more attentions due to its clean and renewable source. The aerodynamic characteristic of wind turbine airfoil directly affects the turbine efficiency. In order to improve the airfoil aerodynamic characteristic, a new concept airfoil configuration for wind turbine is presented. A cave on the upper surface near the trailing edge is designed to generate a trapped vortex in the cave. The trapped vortex is used to stabilize the separated flow when the airfoil at high angle of attack. Combining with the Gurney flap, the airfoil with the cave behaves very good aerodynamic characteristics at wide range of incidences, especially at high angles of attack. The method is used on the well-known FFA-W3-301 turbine airfoil. By using numerical simulation, it is shown that the new airfoil has a higher lift than the original airfoil at the same angle of attack, the stall angle of attack increases from 12 degree to 17 degree, and the maximum lift coefficient increases approximately 64 percents. In addition, the effects of the chord-wise location of starting point of the designed cave are discussed. Therefore, it is believed that the new-designed concept can be investigated and explored further for wind turbine.

Positioning the Angle of Attack Sensor on an Unmanned Aerial Vehicle Wing

2016 ◽  
Vol 3 (1) ◽  
pp. 25-33
Author(s):  
Amir Birjandi ◽  
◽  
Valentin Guerry ◽  
Eric Bibeau ◽  
Hamidreza Bolandhemmat ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Angle Of Attack ◽  
Aerial Vehicle

AXISYMMETRIC BODY AT AN ANGLE OF ATTACK IN HYPERSONIC FLOW: HEAT PROBLEM

2015 ◽  
Vol 46 (2) ◽  
pp. 107-121
Author(s):  
Vyacheslav Antonovich Bashkin ◽  
Ivan Vladimirovich Egorov ◽  
Ivan Valeryevich Ezhov
Keyword(s):  
Hypersonic Flow ◽  
Angle Of Attack ◽  
Axisymmetric Body ◽  
Heat Problem ◽  
Flow Heat
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