Prediction and Measurement of the Common Research Model Wake at Stall Conditions
Prediction and Measurement of the Common Research Model Wake at Stall Conditions
复制标题
失速条件下常见研究模型尾流的预测和测量
DOI：
10.2514/1.c033351
复制
发表时间：
2016
影响因子：
2.2
通讯作者：
S. Hülse
中科院分区：
文献类型：
--
作者：
T. Lutz;Philipp P. Gansel;A. Waldmann;D.;S. Hülse
失速条件下运输机非定常尾迹的发展及其对尾翼的影响是很难预测的，其流动物理也远未被理解。在欧洲战略风洞改进研究潜力项目中，在低温欧洲跨音速风洞中对NASA共同研究模型的分离尾迹进行了时间分辨粒子图像速度测量，以获得飞行雷诺数条件，并补充了针对各种流入条件的气动测量。在时间分辨粒子图像测速中，同时考虑了低速失速(M∞=0.2 5，Re=1 1.6/1 700万 )和高速失速(M∞=0.85，Re=19.8/3 000万 )，其频率分辨率高达1 kHz，使湍流尾迹谱得到了充分的表征。对于选定的高速和低速失速条件，进行了雷诺平均N-S/大涡混合模拟。现在..。
The development of the unsteady wake of transport aircraft under stall conditions and its impact on the empennage are challenging to predict, and the flow physics is far from being understood. In the European Strategic Wind Tunnels Improved Research Potential project, time-resolved particle image velocimetry measurements on the separated wake of the NASA Common Research Model were performed in the cryogenic European Transonic Windtunnel for flight Reynolds number conditions supplemented by aerodynamic measurements for a great variety of inflow conditions. In the time-resolved particle image velocimetry measurements, both low-speed stall (M∞=0.25, Re=11.6/17 million) and high-speed stall conditions (M∞=0.85, Re=19.8/30 million) were considered and the frequency resolution was as high as 1 kHz, enabling a sufficient characterization of the turbulent wake spectrum. For selected high- and low-speed stall conditions, hybrid Reynolds-averaged Navier–Stokes/large-eddy simulations were performed. In the present...