针对目前一般的大气边界层物理风洞采用被动格栅产生的紊流脉动风场功率谱密度能量分布难以调整以及积分尺度过小的问题,借助于主动控制方法善于改变来流功率谱及积分尺度的特点,利用日本宫崎大学多风扇主动控制风洞调试出多种宽带紊流风场和谐波脉动风场,采用脉动风速和气动力同步采集监控装置,使用测量稳定性好、精度较高的节段模型高频天平测力方法识别类平板模型的抖振力,对影响模型抖振力的主要参数(积分尺度、紊流度、攻角等)进行分析。

In atmospheric boundary, the power spectral density of turbulent wind, simulated passively by the grid layer, is regulated difficultly with the problem of smaller integral length of turbulence. So the advantage of active control method is adapted to adjust the power spectral density and the integral length. Multiple fan wind tunnel in Miyazaki of Japan are used to debug many kinds of broadband turbulent wind and harmonic fluctuating wind. By using the high frequency force balance of better stability and precision to measure the buffeting force of thin plate section with testing the fluctuating wind synchronously, the impact parameters (integral length, turbulence intensity, attack angle etc) are analyzed.