Increasing the Aerodynamic Performance of a Formula Student Race Car by Means of Active Flow Control

2019 ◽  
Author(s):  
Ben Steinfurth ◽  
Arne Berthold ◽  
Steffen Feldhus ◽  
Frank Haucke ◽  
Julien Weiss
Keyword(s):  
Flow Control ◽  
Active Flow Control ◽  
Aerodynamic Performance ◽  
Race Car ◽  
Active Flow

Numerical Investigations of Synthetic Jet Control for TAU0015 Airfoil

2014 ◽  
Vol 598 ◽  
pp. 562-567
Author(s):  
Xiao Ping Xu ◽  
Zhou Zhou ◽  
Rui Wang
Keyword(s):  
Flow Control ◽  
Control Method ◽  
Active Flow Control ◽  
Flow Characteristics ◽  
Aerodynamic Performance ◽  
Synthetic Jet ◽  
Airfoil Surface ◽  
Momentum Coefficient ◽  
Jet Control ◽  
Active Flow

The aerodynamic performance of TAU0015 airfoil was investigated with synthetic jet control method. The simplified mathematical model of the active flow control was established with unsteady velocity boundary condition at the specific location of airfoil surface. The aerodynamic performance was simulated with synthetic jet and the efficiency of jet momentum coefficient was conducted. The result shows that the flow control model could perform the minor jet flow characteristics and higher jet momentum coefficient result better control efficiency.

Flow Control Using Air-Jet to Improve the Aerodynamic Performance of a Multi-Element Airfoil

2015 ◽  
Vol 772 ◽  
pp. 441-445
Author(s):  
Hassan Akbar ◽  
Yu Qin Jiao ◽  
Abu Bakar
Keyword(s):  
Flow Control ◽  
Flow Separation ◽  
Parametric Analysis ◽  
Active Flow Control ◽  
Aerodynamic Performance ◽  
Momentum Coefficient ◽  
Air Jet ◽  
Active Flow ◽  
Drag Ratio ◽  
Specific Momentum

This paper describes the application of active flow control for the NLR7301 supercritical airfoil/flap configuration at Re = 2.51x106. A parametric analysis is conducted to investigate the effects of jet parameters (jet direction, jet location and momentum coefficient) on the aerodynamic performance of a multi-element airfoil. The results indicate that flow separation is delayed and efficiency of jet can be improved with specific momentum coefficient (the best lift-drag ratio at Cμ=0.16) and jet angle (16°) when the jet is located near the separation point of the airfoil.

Surface suction on aerofoil aerodynamic characteristics at transonic speeds

1998 ◽  
Vol 212 (5) ◽  
pp. 339-351 ◽  
Author(s):  
N Qin ◽  
Y Zhu ◽  
D I A Poll
Keyword(s):  
Flow Control ◽  
Numerical Study ◽  
Active Flow Control ◽  
Effective Means ◽  
Active Surface ◽  
Aerodynamic Characteristics ◽  
Aerodynamic Performance ◽  
Surface Suction ◽  
Lift And Drag ◽  
Active Flow

This paper presents a numerical study of the effects of an active flow control through surface suction on shock boundary layer interactions over transonic aerofoils. Two different aerofoils were studied. Firstly, for the purpose of validation, an NACA64A010 aerofoil with a trailing edge flap was investigated and the numerical results were compared with experimental data with and without suction for surface pressure distributions and lift and drag coefficients. Grid sensitivity has also been studied regarding the numerical accuracy. The second geometry was an RAE9647 aerofoil, which was designed for superior aerodynamic performance when applied to a helicopter rotor blade. An active surface was used to prevent or alleviate shock-induced separation. The suction strength and location were varied to determine the effect on aerodynamic performance and to provide an effective means of suppressing undesirable flow features. In both cases, increases in both lift and drag were observed when surface suction was applied. However, the benefit of suction appeared in the form of a substantial increase in the lift-drag ratio. It was also found that the shock location and strength are very sensitive to the suction location and strength. Two different mechanisms for active flow control over transonic aerofoils are discussed.

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