Unsteady wind tunnel wall pressure research 非定常风洞(UWT)壁压特性研究
In this paper, the effects of unsteady free stream on aerodynamics of an aircraft model are studied in the unsteady wind tunnel of NUAA. 在国内首座非定常风洞(UWT)中,研究了不同幅值、不同频率脉动的非定常自由来流对飞机模型气动特性的影响。
The instantaneous vortex structure of the leading-edge vortices on a delta wing in unsteady free stream is investigated via particle image velocimetry in unsteady wind tunnel of NUAA. 在南航非定常风洞(UWT)中,运用PIV测量技术,研究了非定常自由来流下三角翼前缘涡瞬时涡结构的变化。
A digital low pass filter with lower noise and disturbance in the signals was designed for data processing of unsteady aerodynamic experiments in wind tunnel, and it was successfully applied in test. 为了对非定常试验数据进行处理,笔者设计了一款数字低通滤波器,有效地减弱了信号中的噪声和干扰,并已成功用于试验中。
As the first successful experiment which has been conducted in China to test the unsteady aerodynamic forces in wind tunnel, the feasibility of the method is proved through numerous tests and abundant practice. 首次在国内成功实现了在风洞中测试桥梁节段模型颤振导数的强迫振动法,并通过大量的试验验证了本测试装置的可靠性。