Analysis of aerodynamic load effects on thin plat section under active control flow condition

作者：Pan Tao^*; Zhao Lin; Cao Shu Yang; Ge Yao Jun; Ozono S

来源：Journal of Experiments in Fluid Mechanics, 2010, 24(6): 32-37+56.

• Active control
• Aerodynamic forces
• Boundary reflection
• Buffeting force
• Discrete frequencies
• Dynamic balance
• Fixed wall
• Fluctuating wind
• Frequency ranges
• Frequency-doubling
• High-precision
• Load effects
• Mean-winds
• Multiple fan active wind tunnel
• Section model
• Thin plate sections
• Three-component
• Turbulence intensity
• Wind tunnel tests

Utilizing 11×9 multiple fan active control wind tunnel in Miyazaki University and high-precision dynamic balance equipment, three-component aerodynamic forces on thin plat section in sinusoidal fluctuating wind field were measured. The load effects on the model under different conditions, such as mean wind velocity, fluctuation amplitude, frequency and integral length, were compared. Frequency doubling amplification effect caused by the fixed wall boundary reflection effect in atmospheric boundary physical wind tunnel was reported and confirmed. In the validated effective frequency range where discrete frequency load effect caused by sinusoidal fluctuating wind can be linearly superposed, the impacts on aerodynamic load effect induced by turbulence integral length and turbulence intensity were analyzed preliminarily. The differences between the conventional buffeting force theory and the wind tunnel test results of typical section model were clarified.

• 出版日期2010
• 单位同济大学